A Guide to the Mazes of Menace:
Guidebook for NetHack
Original version - Eric S. Raymond(Edited and expanded for 3.6 by Mike Stephenson and others)
December 7, 2015

1

Preface - Version 3.6

This version of the game is special in a particular way. Near the end of the development of 3.6, one of
the significant inspirations for many of the humorous and fun features found in the game, author Terry
Pratchett, passed away. We have dedicated this version of the game in his memory.

2

Introduction

Recently, you have begun to find yourself unfulfilled and distant in your daily occupation. Strange dreams
of prospecting, stealing, crusading, and combat have haunted you in your sleep for many months, but
you aren’t sure of the reason. You wonder whether you have in fact been having those dreams all yourlife, and somehow managed to forget about them until now. Some nights you awaken suddenly andcry out, terrified at the vivid recollection of the strange and powerful creatures that seem to be lurking
behind every corner of the dungeon in your dream. Could these details haunting your dreams be real?
As each night passes, you feel the desire to enter the mysterious caverns near the ruins grow stronger.
Each morning, however, you quickly put the idea out of your head as you recall the tales of those whoentered the caverns before you and did not return. Eventually you can resist the yearning to seek out
the fantastic place in your dreams no longer. After all, when other adventurers came back this way after
spending time in the caverns, they usually seemed better off than when they passed through the firsttime. And who was to say that all of those who did not return had not just kept going?
Asking around, you hear about a bauble, called the Amulet of Yendor by some, which, if you canfind it, will bring you great wealth. One legend you were told even mentioned that the one who finds
the amulet will be granted immortality by the gods. The amulet is rumored to be somewhere beyond
the Valley of Gehennom, deep within the Mazes of Menace. Upon hearing the legends, you immediately
realize that there is some profound and undiscovered reason that you are to descend into the caverns andseek out that amulet of which they spoke. Even if the rumors of the amulet’s powers are untrue, you
decide that you should at least be able to sell the tales of your adventures to the local minstrels for atidy sum, especially if you encounter any of the terrifying and magical creatures of your dreams along theway. You spend one last night fortifying yourself at the local inn, becoming more and more depressed as
you watch the odds of your success being posted on the inn’s walls getting lower and lower.
In the morning you awake, collect your belongings, and set off for the dungeon. After several days of
uneventful travel, you see the ancient ruins that mark the entrance to the Mazes of Menace. It is late
at night, so you make camp at the entrance and spend the night sleeping under the open skies. In themorning, you gather your gear, eat what may be your last meal outside, and enter the dungeon. . .

3What is going on here?

You have just begun a game of NetHack. Your goal is to grab as much treasure as you can, retrieve theAmulet of Yendor, and escape the Mazes of Menace alive.
Your abilities and strengths for dealing with the hazards of adventure will vary with your backgroundand training:Archeologists

understand dungeons pretty well; this enables them to move quickly and sneak up on
the local nasties. They start equipped with the tools for a proper scientific expedition.
Barbarians
are warriors out of the hinterland, hardened to battle. They begin their quests withnaught but uncommon strength, a trusty hauberk, and a great two-handed sword.
Cavemen and Cavewomen start with exceptional strength, but unfortunately, neolithic weapons.
Healers
are wise in medicine and apothecary. They know the herbs and simples that can
restore vitality, ease pain, anesthetize, and neutralize poisons; and with their instruments, they can divine a being’s state of health or sickness. Their medical practiceearns them quite reasonable amounts of money, with which they enter the dungeon.
1Knights

are distinguished from the common skirmisher by their devotion to the ideals ofchivalry and by the surpassing excellence of their armor.
Monks
are ascetics, who by rigorous practice of physical and mental disciplines have become
capable of fighting as effectively without weapons as with. They wear no armor but
make up for it with increased mobility.
Priests and Priestesses are clerics militant, crusaders advancing the cause of righteousness with arms,
armor, and arts thaumaturgic. Their ability to commune with deities via prayer
occasionally extricates them from peril, but can also put them in it.
Rangers
are most at home in the woods, and some say slightly out of place in a dungeon. They
are, however, experts in archery as well as tracking and stealthy movement.
Roguesare agile and stealthy thieves, with knowledge of locks, traps, and poisons. Theiradvantage lies in surprise, which they employ to great advantage.
Samurai
are the elite warriors of feudal Nippon. They are lightly armored and quick, and wear
the dai-sho, two swords of the deadliest keenness.
Tourists
start out with lots of gold (suitable for shopping with), a credit card, lots of food,some maps, and an expensive camera. Most monsters don’t like being photographed.
Valkyries
are hardy warrior women. Their upbringing in the harsh Northlands makes themstrong, inures them to extremes of cold, and instills in them stealth and cunning.
Wizards
start out with a knowledge of magic, a selection of magical items, and a particularaffinity for dweomercraft. Although seemingly weak and easy to overcome at firstsight, an experienced Wizard is a deadly foe.
You may also choose the race of your character:
DwarvesElves
GnomesHumansOrcs

4

are smaller than humans or elves, but are stocky and solid individuals. Dwarves’
most notable trait is their great expertise in mining and metalwork. Dwarvish armor
is said to be second in quality not even to the mithril armor of the Elves.
are agile, quick, and perceptive; very little of what goes on will escape an Elf. The
quality of Elven craftsmanship often gives them an advantage in arms and armor.
are smaller than but generally similar to dwarves. Gnomes are known to be expert
miners, and it is known that a secret underground mine complex built by this race
exists within the Mazes of Menace, filled with both riches and danger.
are by far the most common race of the surface world, and are thus the norm towhich other races are often compared. Although they have no special abilities, they
can succeed in any role.
are a cruel and barbaric race that hate every living thing (including other orcs). Above
all others, Orcs hate Elves with a passion unequalled, and will go out of their way
to kill one at any opportunity. The armor and weapons fashioned by the Orcs are
typically of inferior quality.

What do all those things on the screen mean?

On the screen is kept a map of where you have been and what you have seen on the current dungeon
level; as you explore more of the level, it appears on the screen in front of you.
When NetHack ’s ancestor rogue first appeared, its screen orientation was almost unique among computer fantasy games. Since then, screen orientation has become the norm rather than the exception;
NetHack continues this fine tradition. Unlike text adventure games that accept commands in pseudoEnglish sentences and explain the results in words, NetHack commands are all one or two keystrokes andthe results are displayed graphically on the screen. A minimum screen size of 24 lines by 80 columns is
recommended; if the screen is larger, only a 21 × 80 section will be used for the map.
2

NetHack can even be played by blind players, with the assistance of Braille readers or speech synthesisers. Instructions for configuring NetHack for the blind are included later in this document.
NetHack generates a new dungeon every time you play it; even the authors still find it an entertaining
and exciting game despite having won several times.
NetHack offers a variety of display options. The options available to you will vary from port to port,
depending on the capabilities of your hardware and software, and whether various compile-time options
were enabled when your executable was created. The three possible display options are: a monochrome
character interface, a color character interface, and a graphical interface using small pictures calledtiles. The two character interfaces allow fonts with other characters to be substituted, but the default
assignments use standard ASCII characters to represent everything. There is no difference between thevarious display options with respect to game play. Because we cannot reproduce the tiles or colors in the
Guidebook, and because it is common to all ports, we will use the default ASCII characters from themonochrome character display when referring to things you might see on the screen during your game.
In order to understand what is going on in NetHack, first you must understand what NetHack is doingwith the screen. The NetHack screen replaces the “You see . . . ” descriptions of text adventure games.
Figure 1 is a sample of what a NetHack screen might look like. The way the screen looks for you depends
on your platform.
The bat bites!
-----|....|---------|.<..|####...@...$.||....-#|...B....+|....||.d......|------------|--

Player the Rambler
St:12 Dx:7 Co:18 In:11 Wi:9 Ch:15
Dlvl:1 $:0 HP:9(12) Pw:3(3) AC:10 Exp:1/19 T:257 Weak

NeutralFigure 1

The status lines (bottom)
The bottom two lines of the screen contain several cryptic pieces of information describing your current
status. If either status line becomes longer than the width of the screen, you might not see all of it. Hereare explanations of what the various status items mean (though your configuration may not have all thestatus items listed below):
Rank
Strength

Dexterity

Your character’s name and professional ranking (based on the experience level, see
below).
A measure of your character’s strength; one of your six basic attributes. A humancharacter’s attributes can range from 3 to 18 inclusive; non-humans may exceed theselimits (occasionally you may get super-strengths of the form 18/xx, and magic canalso cause attributes to exceed the normal limits). The higher your strength, thestronger you are. Strength affects how successfully you perform physical tasks, howmuch damage you do in combat, and how much loot you can carry.
Dexterity affects your chances to hit in combat, to avoid traps, and do other tasks
requiring agility or manipulation of objects.

3

Constitution
Intelligence
WisdomCharisma
Alignment

Dungeon LevelGold
Hit Points

Power
Armor Class

ExperienceTime
Hunger Status

Constitution affects your ability to recover from injuries and other strains on yourstamina.
Intelligence affects your ability to cast spells and read spellbooks.
Wisdom comes from your practical experience (especially when dealing with magic).
It affects your magical energy.
Charisma affects how certain creatures react toward you. In particular, it can affectthe prices shopkeepers offer you.
Lawful, Neutral or Chaotic. Often, Lawful is taken as good and Chaotic is evil, but legal and ethical do not always coincide. Your alignment influences how other monsters
react toward you. Monsters of a like alignment are more likely to be non-aggressive,
while those of an opposing alignment are more likely to be seriously offended at yourpresence.
How deep you are in the dungeon. You start at level one and the number increases
as you go deeper into the dungeon. Some levels are special, and are identified by aname and not a number. The Amulet of Yendor is reputed to be somewhere beneaththe twentieth level.
The number of gold pieces you are openly carrying. Gold which you have concealedin containers is not counted.
Your current and maximum hit points. Hit points indicate how much damage you
can take before you die. The more you get hit in a fight, the lower they get. You canregain hit points by resting, or by using certain magical items or spells. The number
in parentheses is the maximum number your hit points can reach.
Spell points. This tells you how much mystic energy (mana) you have available forspell casting. Again, resting will regenerate the amount available.
A measure of how effectively your armor stops blows from unfriendly creatures. The
lower this number is, the more effective the armor; it is quite possible to have negative
armor class.
Your current experience level and experience points. As you adventure, you gain
experience points. At certain experience point totals, you gain an experience level.
The more experienced you are, the better you fight and withstand magical attacks.
Many dungeons show only your experience level here.
The number of turns elapsed so far, displayed if you have the time option set.
Your current hunger status, ranging from Satiated down to Fainting. If your hunger
status is normal, it is not displayed. Additional status flags may appear after thehunger status: Conf when you’re confused, FoodPois or Ill when sick, Blind when
you can’t see, Stun when stunned, and Hallu when hallucinating.

The message line (top)The top line of the screen is reserved for messages that describe things that are impossible to represent
visually. If you see a “--More--” on the top line, this means that NetHack has another message todisplay on the screen, but it wants to make certain that you’ve read the one that is there first. To readthe next message, just press the space bar.
To change how and what messages are shown on the message line, see “Configuring Message Types“
and the verbose option.

4

The map (rest of the screen)
The rest of the screen is the map of the level as you have explored it so far. Each symbol on the screen
represents something. You can set various graphics options to change some of the symbols the game uses;
otherwise, the game will use default symbols. Here is a list of what the default symbols mean:- and |.
#

The walls of a room, or an open door. Or a grave (|).
The floor of a room, ice, or a doorless doorway.
A corridor, or iron bars, or a tree, or possibly a kitchen sink (if your dungeon has
sinks), or a drawbridge.
>
Stairs down: a way to the next level.
<
Stairs up: a way to the previous level.
+
A closed door, or a spellbook containing a spell you may be able to learn.
@Your character or a human.
$
A pile of gold.
^
A trap (once you have detected it).
)A weapon.
[
A suit or piece of armor.
%
Something edible (not necessarily healthy).
?
A scroll.
/
A wand.
=A ring.
!
A potion.
(
A useful item (pick-axe, key, lamp . . . ).
"An amulet or a spider web.
*A gem or rock (possibly valuable, possibly worthless).
`
A boulder or statue.
0
An iron ball.
_
An altar, or an iron chain.
{
A fountain.
}
A pool of water or moat or a pool of lava.
\
An opulent throne.
a-zA-Z & other symbols Letters and certain other symbols represent the various inhabitants of theMazes of Menace. Watch out, they can be nasty and vicious. Sometimes, however,they can be helpful.
I
This marks the last known location of an invisible or otherwise unseen monster. Notethat the monster could have moved. The ‘F’ and ‘m’ commands may be useful here.
You need not memorize all these symbols; you can ask the game what any symbol represents with the‘/’ command (see the next section for more info).

5

Commands

Commands are initiated by typing one or two characters. Some commands, like “search”, do not
require that any more information be collected by NetHack . Other commands might require additional
information, for example a direction, or an object to be used. For those commands that require additional
information, NetHack will present you with either a menu of choices, or with a command line prompt5requesting information. Which you are presented with will depend chiefly on how you have set the‘menustyle’ option.
For example, a common question in the form “What do you want to use? [a-zA-Z ?*]”, asks you
to choose an object you are carrying. Here, “a-zA-Z” are the inventory letters of your possible choices.
Typing ‘?’ gives you an inventory list of these items, so you can see what each letter refers to. In thisexample, there is also a ‘*’ indicating that you may choose an object not on the list, if you wanted touse something unexpected. Typing a ‘*’ lists your entire inventory, so you can see the inventory lettersof every object you’re carrying. Finally, if you change your mind and decide you don’t want to do thiscommand after all, you can press the ‘ESC’ key to abort the command.
You can put a number before some commands to repeat them that many times; for example, “10s”
will search ten times. If you have the number_pad option set, you must type ‘n’ to prefix a count, so theexample above would be typed “n10s” instead. Commands for which counts make no sense ignore them.
In addition, movement commands can be prefixed for greater control (see below). To cancel a count or
a prefix, press the ‘ESC’ key.
The list of commands is rather long, but it can be read at any time during the game through the ‘?’command, which accesses a menu of helpful texts. Here are the commands for your reference:
?
/

&
<
>
[yuhjklbn]

Help menu: display one of several help texts available.
Tell what a symbol represents. You may choose to specify a location or type a symbol(or even a whole word) to explain. Specifying a location is done by moving the cursor
to a particular spot on the map and then pressing one of ‘.’, ‘,’, ‘;’, or ‘:’. ‘.’will explain the symbol at the chosen location, conditionally check for “More info?”
depending upon whether the help option is on, and then you will be asked to pickanother location; ‘,’ will explain the symbol but skip any additional information; ‘;’will skip additional info and also not bother asking you to choose another location to
examine; ‘:’ will show additional info, if any, without asking for confirmation. Whenpicking a location, pressing the ESC key will terminate this command, or pressing ‘?’
will give a brief reminder about how it works.
Specifying a name rather than a location always gives any additional information
available about that name.
Tell what a command does.
Go up to the previous level (if you are on a staircase or ladder).
Go down to the next level (if you are on a staircase or ladder).
Go one step in the direction indicated (see Figure 2). If you sense or remember a
monster there, you will fight the monster instead. Only these one-step movement
commands cause you to fight monsters; the others (below) are “safe.”
y

k u
\ | /
h- . -l
/ | \
b j n

7

8 9
\ | /
4- . -6/ | \1 2 3(if number_pad set)
Figure 2[YUHJKLBN]m[yuhjklbn]
F[yuhjklbn]
M[yuhjklbn]
g[yuhjklbn]

Go in that direction until you hit a wall or run into something.
Prefix: move without picking up objects or fighting (even if you remember a monster
there)
Prefix: fight a monster (even if you only guess one is there)
Prefix: Move far, no pickup.
Prefix: Move until something interesting is found.

6

G[yuhjklbn] or <CONTROL->[yuhjklbn] Prefix: Same as ‘g’, but forking of corridors is not consideredinteresting.
_
Travel to a map location via a shortest-path algorithm.
The shortest path is computed over map locations the hero knows about (e.g. seenor previously traversed). If there is no known path, a guess is made instead. Stopson most of the same conditions as the ‘G’ command, but without picking up objects,
similar to the ‘M’ command. For ports with mouse support, the command is also
invoked when a mouse-click takes place on a location other than the current position.
.
Rest, do nothing for one turn.
a
Apply (use) a tool (pick-axe, key, lamp . . . ).
A
Remove one or more worn items, such as armor.
Use ‘T’ (take off) to take off only one piece of armor or ‘R’ (remove) to take off only
one accessory.
^A
Redo the previous command.
c
Close a door.
C
Call (name) a monster, an individual object, or an object type.
Same as extended command “#name”.
^C
Panic button. Quit the game.
dDrop something.
d7a — drop seven items of object a.
D
Drop several things.
In answer to the question“What kinds of things do you want to drop? [!%= BUCXaium]”
you should type zero or more object symbols possibly followed by ‘a’ and/or ‘i’ and/or‘u’ and/or ‘m’. In addition, one or more of the blessed/uncursed/cursed groups may
be typed.
DB — drop all objects known to be blessed.
DU — drop all objects known to be uncursed.
DC — drop all objects known to be cursed.
DX — drop all objects of unknown B/U/C status.
Da — drop all objects, without asking for confirmation.
Di — examine your inventory before dropping anything.
Du — drop only unpaid objects (when in a shop).
Dm — use a menu to pick which object(s) to drop.
D%u — drop only unpaid food.
^D
Kick something (usually a door).
e
Eat food.
E
Engrave a message on the floor.
E- — write in the dust with your fingers.
Engraving the word “Elbereth” will cause most monsters to not attack you handto-hand (but if you attack, you will rub it out); this is often useful to give yourself abreather. (This feature may be compiled out of the game, so your version might nothave it.)fFire one of the objects placed in your quiver (or quiver sack, or that you have at theready). You may select ammunition with a previous ‘Q’ command, or let the computer
pick something appropriate if autoquiver is true.
i
List your inventory (everything you’re carrying).
I
List selected parts of your inventory, usually be specifying the character for a partic-

7

o
O

p
P

^P

q
Q

r
R

^R
s
S
t
T

ular set of objects, like ‘[’ for armor or ‘!’ for potions.
I* — list all gems in inventory;
Iu — list all unpaid items;
Ix — list all used up items that are on your shopping bill;
IB — list all items known to be blessed;
IU — list all items known to be uncursed;
IC — list all items known to be cursed;
IX — list all items whose bless/curse status is unknown;
I$ — count your money.
Open a door.
Set options.
A menu showing the current option values will be displayed. You can change mostvalues simply by selecting the menu entry for the given option (ie, by typing its letteror clicking upon it, depending on your user interface). For the non-boolean choices,a further menu or prompt will appear once you’ve closed this menu. The available
options are listed later in this Guidebook. Options are usually set before the gamerather than with the ‘O’ command; see the section on options below.
Pay your shopping bill.
Put on an accessory (ring, amulet, blindfold).
This command may also be used to wear armor. The prompt for which inventory item
to use will only list accessories, but choosing an unlisted item of armor will attempt
to wear it. (See the ‘W’ command below. It lists armor as the inventory choices but
will accept an accessory and attempt to put that on.)Repeat previous message.
Subsequent ^P’s repeat earlier messages. The behavior can be varied via the msg_window
option.
Quaff (drink) something (potion, water, etc).
Select an object for your quiver, quiver sack, or just generally at the ready (only oneof these is available at a time). You can then throw this (or one of these) using the‘f’ command.
(In versions prior to 3.3 this was the command to quit the game, which has been
moved to “#quit”.)
Read a scroll or spellbook.
Remove a worn accessory (ring, amulet, or blindfold).
If you’re wearing more than one, you’ll be prompted for which one to remove. When
you’re only wearing one, then by default it will be removed without asking, but you
can set the paranoid_confirmation option to require a prompt.
This command may also be used to take off armor. The prompt for which inventory
item to remove only lists worn accessories, but an item of worn armor can be chosen.
(See the ‘T’ command below. It lists armor as the inventory choices but will accept
an accessory and attempt to remove it.)Redraw the screen.
Search for secret doors and traps around you. It usually takes several tries to findsomething.
Save (and suspend) the game. The game will be restored automatically the next time
you play.
Throw an object or shoot a projectile.
Take off armor.
If you’re wearing more than one piece, you’ll be prompted for which one to take off.
8

^T
v
V
w

W

x

X

^X

z
Z
^Z
:
;
,
@
^
)
[

(Note that this treats a cloak covering a suit and/or a shirt, or a suit covering a shirt,
as if the underlying items weren’t there.) When you’re only wearing one, then by
default it will be taken off without asking, but you can set the paranoid_confirmation
option to require a prompt.
This command may also be used to remove accessories. The prompt for which inventory item to take off only lists worn armor, but a worn accessory can be chosen. (Seethe ‘R’ command above. It lists accessories as the inventory choices but will accept
an item of armor and attempt to take it off.)
Teleport, if you have the ability.
Display version number.
Display the game history.
Wield weapon.
w- — wield nothing, use your bare hands.
Some characters can wield two weapons at once; use the ‘X’ command (or the “#twoweapon”
extended command) to do so.
Wear armor.
This command may also be used to put on an accessory (ring, amulet, or blindfold).
The prompt for which inventory item to use will only list armor, but choosing anunlisted accessory will attempt to put it on. (See the ‘P’ command above. It lists
accessories as the inventory choices but will accept an item of armor and attempt towear it.)
Exchange your wielded weapon with the item in your alternate weapon slot.
The latter is used as your secondary weapon when engaging in two-weapon combat.
Note that if one of these slots is empty, the exchange still takes place.
Toggle two-weapon combat, if your character can do it. Also available via the“#twoweapon” extended command.
+.lp ”” +(In versions prior to 3.6 this was the command to switch from normal +play
to “explore mode”, also known as “discovery mode”, which has now +been moved to“#explore”.)
Display basic information about your character.
Displays name, role, race, gender (unless role name makes that redundant, such as
Caveman or Priestess), and alignment, along with your patron deity and his or her
opposition. It also shows most of the various items of information from the statusline(s) in a less terse form, including several additional things which don’t appear in
the normal status display due to space considerations.
Zap a wand.
z. — to aim at yourself, use ‘.’ for the direction.
Zap (cast) a spell.
Z. — to aim at yourself, use ‘.’ for the direction.
Suspend the game (UNIX versions with job control only).
Look at what is here.
Show what type of thing a visible symbol corresponds to.
Pick up some things.
May be preceded by ‘m’ to force a selection menu.
Toggle the autopickup option on and off.
Ask for the type of a trap you found earlier.
Tell what weapon you are wielding.
Tell what armor you are wearing.
9

=
"
(
*
$
+

\
`
!
#

#adjust#annotate#chat#conduct#dip#enhance#force#invoke#jump#loot#monster#name#offer#overview

Tell what rings you are wearing.
Tell what amulet you are wearing.
Tell what tools you are using.
Tell what equipment you are using.
Combines the preceding five type-specific commands into one.
Count your gold pieces.
List the spells you know.
Using this command, you can also rearrange the order in which your spells are listed,either by sorting the entire list or by picking one spell from the menu then picking
another to swap places with it. Swapping pairs of spells changes their casting letters,
so the change lasts after the current ‘+’ command finishes. Sorting the whole list
is temporary. To make the most recent sort order persist beyond the current ‘+’
command, choose the sort option again and then pick “reassign casting letters”. (Anyspells learned after that will be added to the end of the list rather than be inserted
into the sorted ordering.)
Show what types of objects have been discovered.
Show discovered types for one class of objects.
Escape to a shell.
Perform an extended command.
As you can see, the authors of NetHack used up all the letters, so this is a way tointroduce the less frequently used commands. What extended commands are available
depends on what features the game was compiled with.
Adjust inventory letters (most useful when the fixinv option is “on”).
This command allows you to move an item from one particular inventory slot toanother so that it has a letter which is more meaningful for you or that it will appear
in a particular location when inventory listings are displayed. “#adjust” can also be
used to split a stack of objects; when choosing the item to adjust, enter a count prior
to its letter.
Allows you to specify one line of text to associate with the current dungeon level. All
levels with annotations are displayed by the “#overview” command.
Talk to someone.
List voluntary challenges you have maintained.
See the section below entitled “Conduct” for details.
Dip an object into something.
Advance or check weapon and spell skills.
Force a lock.
Invoke an object’s special powers.
Jump to another location.
Loot a box or bag on the floor beneath you, or the saddle from a steed standing next
to you.
Use a monster’s special ability (when polymorphed into monster form).
Name a monster, an individual object, or a type of object. Same as ‘C’.
Offer a sacrifice to the gods.
You’ll need to find an altar to have any chance at success. Corpses of recently killed
monsters are the fodder of choice.
Display information you’ve discovered about the dungeon. Any visited level (unless10#pray

#quit

#ride
#rub
#sit
#terrain#tip#turn#twoweapon#untrap#version#wipe#?

forgotten due to amnesia) with an annotation is included, and many things (altars,
thrones, fountains, and so on; extra stairs leading to another dungeon branch) trigger
an automatic annotation. If dungeon overview is chosen during end-of-game disclosure, every visited level will be included regardless of annotations.
Pray to the gods for help.
Praying too soon after receiving prior help is a bad idea. (Hint: entering the dungeon
alive is treated as having received help. You probably shouldn’t start off a new gameby praying right away.) Since using this command by accident can cause trouble,
there is an option to make you confirm your intent before praying. It is enabled bydefault, and you can reset the paranoid_confirmation option to disable it.
Quit the program without saving your game.
Since using this command by accident would throw away the current game, you are
asked to confirm your intent before quitting. By default a response of ‘y’ acknowledges
that intent. You can set the paranoid_confirmation option to require a response of“yes” instead.
Ride (or stop riding) a saddled creature.
Rub a lamp or a stone.
Sit down.
Show bare map without displaying monsters, objects, or traps.
Tip over a container (bag or box) to pour out its contents.
Turn undead.
Toggle two-weapon combat on or off.
Note that you must use suitable weapons for this type of combat, or it will be automatically turned off.
Untrap something (trap, door, or chest).
In some circumstancs it can also be used to rescue trapped monsters.
Print compile time options for this version of NetHack.
Wipe off your face.
Help menu: get the list of available extended commands.

If your keyboard has a meta key (which, when pressed in combination with another key, modifies it bysetting the ‘meta’ [8th, or ‘high’] bit), you can invoke many extended commands by meta-ing the first
letter of the command. In NT, OS/2, PC and ST NetHack, the ‘Alt’ key can be used in this fashion; on
the Amiga, set the altmeta option to get this behavior. On other systems, if typing ‘Alt’ plus anotherkey transmits a two character sequence consisting of an Escape followed by the other key, you may set
the altmeta option to have nethack combine them into metakey.
M-?
M-2
M-a
M-A
M-c
M-C
M-d
M-e
M-f
M-i

#? (not supported by all platforms)#twoweapon (unless the number_pad option is enabled)#adjust#annotate#chat#conduct#dip#enhance#force#invoke

11

M-j
M-l
M-m
M-n
M-o
M-O
M-p
M-q
M-r
M-R
M-s
M-t
M-T
M-u
M-v
M-w

#jump
#loot
#monster#name#offer#overview
#pray
#quit
#rub
#ride
#sit
#turn
#tip
#untrap#version#wipe

If the number_pad option is on, some additional letter commands are available:
Help menu: display one of several help texts available, like “?”.
Jump to another location. Same as “#jump” or “M-j”.
Kick something (usually a door). Same as ‘^D’.
Loot a box or bag on the floor beneath you, or the saddle from a steed standing next
to you. Same as “#loot” or “M-l”.
Name an object or type of object. Same as “#name” or “M-n”. Name a monster, anindividual object, or a type of object. Same as “#name” (or “M-n”) which is the sameas the ‘C’ command.
Untrap a trap, door, or chest. Same as “#untrap” or “M-u”.

h
j
k
l
N

u

6

Rooms and corridors

Rooms and corridors in the dungeon are either lit or dark. Any lit areas within your line of sight will be
displayed; dark areas are only displayed if they are within one space of you. Walls and corridors remainon the map as you explore them.
Secret corridors are hidden. You can find them with the ‘s’ (search) command.

Doorways
Doorways connect rooms and corridors. Some doorways have no doors; you can walk right through.
Others have doors in them, which may be open, closed, or locked. To open a closed door, use the ‘o’(open) command; to close it again, use the ‘c’ (close) command.
You can get through a locked door by using a tool to pick the lock with the ‘a’ (apply) command, orby kicking it open with the ‘^D’ (kick) command.
Open doors cannot be entered diagonally; you must approach them straight on, horizontally or vertically. Doorways without doors are not restricted in this fashion.
Doors can be useful for shutting out monsters. Most monsters cannot open doors, although a few
don’t need to (ex. ghosts can walk through doors).

12Secret doors are hidden. You can find them with the ‘s’ (search) command. Once found they are in
all ways equivalent to normal doors.

Traps (‘^’)
There are traps throughout the dungeon to snare the unwary delver. For example, you may suddenly fall
into a pit and be stuck for a few turns trying to climb out. Traps don’t appear on your map until you
see one triggered by moving onto it, see something fall into it, or you discover it with the ‘s’ (search)command. Monsters can fall prey to traps, too, which can be a very useful defensive strategy.
There is a special pre-mapped branch of the dungeon based on the classic computer game “Sokoban.”
The goal is to push the boulders into the pits or holes. With careful foresight, it is possible to complete
all of the levels according to the traditional rules of Sokoban. Some allowances are permitted in case theplayer gets stuck; however, they will lower your luck.

Stairs (‘<’, ‘>’)In general, each level in the dungeon will have a staircase going up (‘<’) to the previous level and anothergoing down (‘>’) to the next level. There are some exceptions though. For instance, fairly early in thedungeon you will find a level with two down staircases, one continuing into the dungeon and the otherbranching into an area known as the Gnomish Mines. Those mines eventually hit a dead end, so after
exploring them (if you choose to do so), you’ll need to climb back up to the main dungeon.
When you traverse a set of stairs, or trigger a trap which sends you to another level, the level you’releaving will be deactivated and stored in a file on disk. If you’re moving to a previously visited level, it
will be loaded from its file on disk and reactivated. If you’re moving to a level which has not yet been
visited, it will be created (from scratch for most random levels, from a template for some “special” levels,
or loaded from the remains of an earlier game for a “bones” level as briefly described below). Monsters
are only active on the current level; those on other levels are essentially placed into stasis.
Ordinarily when you climb a set of stairs, you will arrive on the corresponding staircase at yourdestination. However, pets (see below) and some other monsters will follow along if they’re close enoughwhen you travel up or down stairs, and occasionally one of these creatures will displace you during theclimb. When that occurs, the pet or other monster will arrive on the staircase and you will end up nearby.

Ladders (‘<’, ‘>’)Ladders serve the same purpose as staircases, and the two types of inter-level connections are nearly
indistinguishable during game play.

Shops and shoppingOccasionally you will run across a room with a shopkeeper near the door and many items lying on thefloor. You can buy items by picking them up and then using the ‘p’ command. You can inquire about
the price of an item prior to picking it up by using the “#chat” command while standing on it. Using
an item prior to paying for it will incur a charge, and the shopkeeper won’t allow you to leave the shop
until you have paid any debt you owe.
You can sell items to a shopkeeper by dropping them to the floor while inside a shop. You will either
be offered an amount of gold and asked whether you’re willing to sell, or you’ll be told that the shopkeeper
isn’t interested (generally, your item needs to be compatible with the type of merchandise carried by theshop).
If you drop something in a shop by accident, the shopkeeper will usually claim ownership without
offering any compensation. You’ll have to buy it back if you want to reclaim it.
Shopkeepers sometimes run out of money. When that happens, you’ll be offered credit instead of goldwhen you try to sell something. Credit can be used to pay for purchases, but it is only good in the shop

13

where it was obtained; other shopkeepers won’t honor it. (If you happen to find a “credit card” in thedungeon, don’t bother trying to use it in shops; shopkeepers will not accept it.)
The $ command, which reports the amount of gold you are carrying (in inventory, not inside bags
or boxes), will also show current shop debt or credit, if any. The Iu command lists unpaid items (thosewhich still belong to the shop) if you are carrying any. The Ix command shows an inventory-like displayof any unpaid items which have been used up, along with other shop fees, if any.
Shop idiosyncracies
Several aspects of shop behavior might be unexpected.
• The price of a given item can vary due to a variety of factors.
• A shopkeeper treats the spot immediately inside the door as if it were outside the shop.
• While the shopkeeper watches you like a hawk, he will generally ignore any other customers.
• If a shop is “closed for inventory”, it will not open of its own accord.
• Shops do not get restocked with new items, regardless of inventory depletion.

7

Monsters

Monsters you cannot see are not displayed on the screen. Beware! You may suddenly come upon one ina dark place. Some magic items can help you locate them before they locate you (which some monsters
can do very well).
The commands ‘/’ and ‘;’ may be used to obtain information about those monsters who are displayedon the screen. The command “#name”, or its synonym ‘C’, allows you to assign a name to a monster,which may be useful to help distinguish one from another when multiple monsters are present. Assigninga name which is just a space will remove any prior name.
The extended command “#chat” can be used to interact with an adjacent monster. There is no actual
dialog (in other words, you don’t get to choose what you’ll say), but chatting with some monsters suchas a shopkeeper or the Oracle of Delphi can produce useful results.

Fighting
If you see a monster and you wish to fight it, just attempt to walk into it. Many monsters you findwill mind their own business unless you attack them. Some of them are very dangerous when angered.
Remember: discretion is the better part of valor.
In most circumstances, if you attempt to attack a peaceful monster by moving into its location, you’ll
be asked to confirm your intent. By default an answer of ‘y’ acknowledges that intent, which can be error
prone if you’re using ‘y’ to move. You can set the paranoid_confirmation option to require a response of“yes” instead.
If you can’t see a monster (if it is invisible, or if you are blinded), the symbol ‘I’ will be shown when
you learn of its presence. If you attempt to walk into it, you will try to fight it just like a monster thatyou can see; of course, if the monster has moved, you will attack empty air. If you guess that the monster
has moved and you don’t wish to fight, you can use the ‘m’ command to move without fighting; likewise,
if you don’t remember a monster but want to try fighting anyway, you can use the ‘F’ command.

Your pet
You start the game with a little dog (‘d’), cat (‘f’), or pony (‘u’), which follows you about the dungeon
and fights monsters with you. Like you, your pet needs food to survive. It usually feeds itself on fresh14

carrion and other meats. If you’re worried about it or want to train it, you can feed it, too, by throwing
it food. A properly trained pet can be very useful under certain circumstances.
Your pet also gains experience from killing monsters, and can grow over time, gaining hit points anddoing more damage. Initially, your pet may even be better at killing things than you, which makes pets
useful for low-level characters.
Your pet will follow you up and down staircases if it is next to you when you move. Otherwise yourpet will be stranded and may become wild. Similarly, when you trigger certain types of traps which alter
your location (for instance, a trap door which drops you to a lower dungeon level), any adjacent pet willaccompany you and any non-adjacent pet will be left behind. Your pet may trigger such traps itself; youwill not be carried along with it even if adjacent at the time.

SteedsSome types of creatures in the dungeon can actually be ridden if you have the right equipment and skill.
Convincing a wild beast to let you saddle it up is difficult to say the least. Many a dungeoneer has had
to resort to magic and wizardry in order to forge the alliance. Once you do have the beast under yourcontrol however, you can easily climb in and out of the saddle with the ‘#ride’ command. Lead the beastaround the dungeon when riding, in the same manner as you would move yourself. It is the beast thatyou will see displayed on the map.
Riding skill is managed by the ‘#enhance’ command. See the section on Weapon proficiency for more
information about that.

Bones levels
You may encounter the shades and corpses of other adventurers (or even former incarnations of yourself!)
and their personal effects. Ghosts are hard to kill, but easy to avoid, since they’re slow and do little
damage. You can plunder the deceased adventurer’s possessions; however, they are likely to be cursed.
Beware of whatever killed the former player; it is probably still lurking around, gloating over its last
victory.

8

Objects

When you find something in the dungeon, it is common to want to pick it up. In NetHack, this isaccomplished automatically by walking over the object (unless you turn off the autopickup option (seebelow), or move with the ‘m’ prefix (see above)), or manually by using the ‘,’ command. If you’re carrying
too many items, NetHack will tell you so and you won’t be able to pick up anything more. Otherwise,
it will add the object(s) to your pack and tell you what you just picked up. As you add items to yourinventory, you also add the weight of that object to your load. The amount that you can carry depends
on your strength and your constitution. The stronger you are, the less the additional load will affectyou. There comes a point, though, when the weight of all of that stuff you are carrying around with you
through the dungeon will encumber you. Your reactions will get slower and you’ll burn calories faster,requiring food more frequently to cope with it. Eventually, you’ll be so overloaded that you’ll either haveto discard some of what you’re carrying or collapse under its weight. NetHack will tell you how badly
you have loaded yourself. The symbols ‘Burdened’, ‘Stressed’, ‘Strained’, ‘Overtaxed’ and ‘Overloaded’
are displayed on the bottom line display to indicate your condition.
When you pick up an object, it is assigned an inventory letter. Many commands that operate on
objects must ask you to find out which object you want to use. When NetHack asks you to choose aparticular object you are carrying, you are usually presented with a list of inventory letters to choose
from (see Commands, above).
Some objects, such as weapons, are easily differentiated. Others, like scrolls and potions, are given
descriptions which vary according to type. During a game, any two objects with the same description
are the same type. However, the descriptions will vary from game to game.
15

When you use one of these objects, if its effect is obvious, NetHack will remember what it is for you.
If its effect isn’t extremely obvious, you will be asked what you want to call this type of object so you
will recognize it later. You can also use the “#name” command, or its synonym ‘C’, for the same purposeat any time, to name all objects of a particular type or just an individual object. When you use “#name”
on an object which has already been named, specifying a space as the value will remove the prior nameinstead of assigning a new one.

Curses and Blessings
Any object that you find may be cursed, even if the object is otherwise helpful. The most common effectof a curse is being stuck with (and to) the item. Cursed weapons weld themselves to your hand whenwielded, so you cannot unwield them. Any cursed item you wear is not removable by ordinary means. In
addition, cursed arms and armor usually, but not always, bear negative enchantments that make themless effective in combat. Other cursed objects may act poorly or detrimentally in other ways.
Objects can also be blessed. Blessed items usually work better or more beneficially than normal
uncursed items. For example, a blessed weapon will do more damage against demons.
Objects which are neither cursed nor blessed are referred to as uncursed. They could just as easily
have been described as unblessed, but the uncursed designation is what you will see within the game. A“glass half full versus glass half empty” situation; make of that what you will.
There are magical means of bestowing or removing curses upon objects, so even if you are stuckwith one, you can still have the curse lifted and the item removed. Priests and Priestesses have an
innate sensitivity to this property in any object, so they can more easily avoid cursed objects than othercharacter roles.
An item with unknown status will be reported in your inventory with no prefix. An item which you
know the state of will be distinguished in your inventory by the presence of the word “cursed”, “uncursed”
or “blessed” in the description of the item. In some cases “uncursed” will be omitted as being redundant
when enough other information is displayed. The implicit_uncursed option can be used to control this;toggle it off to have “uncursed” be displayed even when that can be deduced from other attributes.

Weapons (‘)’)
Given a chance, most monsters in the Mazes of Menace will gratuitously try to kill you. You needweapons for self-defense (killing them first). Without a weapon, you do only 1–2 hit points of damage(plus bonuses, if any). Monk characters are an exception; they normally do much more damage withbare hands than they do with weapons.
There are wielded weapons, like maces and swords, and thrown weapons, like arrows and spears. To
hit monsters with a weapon, you must wield it and attack them, or throw it at them. You can simply
elect to throw a spear. To shoot an arrow, you should first wield a bow, then throw the arrow. Crossbows
shoot crossbow bolts. Slings hurl rocks and (other) stones (like gems).
Enchanted weapons have a “plus” (or “to hit enhancement” which can be either positive or negative)that adds to your chance to hit and the damage you do to a monster. The only way to determine aweapon’s enchantment is to have it magically identified somehow. Most weapons are subject to some
type of damage like rust. Such “erosion” damage can be repaired.
The chance that an attack will successfully hit a monster, and the amount of damage such a hit willdo, depends upon many factors. Among them are: type of weapon, quality of weapon (enchantment
and/or erosion), experience level, strength, dexterity, encumbrance, and proficiency (see below). The
monster’s armor class—a general defense rating, not necessarily due to wearing of armor—is a factor too;also, some monsters are particularly vulnerable to certain types of weapons.
Many weapons can be wielded in one hand; some require both hands. When wielding a two-handed
weapon, you can not wear a shield, and vice versa. When wielding a one-handed weapon, you can haveanother weapon ready to use by setting things up with the ‘x’ command, which exchanges your primary(the one being wielded) and alternate weapons. And if you have proficiency in the “two weapon combat”

16skill, you may wield both weapons simultaneously as primary and secondary; use the ‘#twoweapon’
extended command to engage or disengage that. Only some types of characters (barbarians, for instance)
have the necessary skill available. Even with that skill, using two weapons at once incurs a penalty inthe chance to hit your target compared to using just one weapon at a time.
There might be times when you’d rather not wield any weapon at all. To accomplish that, wield ‘-’,or else use the ‘A’ command which allows you to unwield the current weapon in addition to taking offother worn items.
Those of you in the audience who are AD&D players, be aware that each weapon which existed in
AD&D does roughly the same damage to monsters in NetHack. Some of the more obscure weapons (suchas the aklys, lucern hammer, and bec-de-corbin) are defined in an appendix to Unearthed Arcana, an
AD&D supplement.
The commands to use weapons are ‘w’ (wield), ‘t’ (throw), ‘f’ (fire, an alternative way of throwing),‘Q’ (quiver), ‘x’ (exchange), ‘#twoweapon’, and ‘#enhance’ (see below).

Throwing and shooting
You can throw just about anything via the ‘t’ command. It will prompt for the item to throw; picking‘?’ will list things in your inventory which are considered likely to be thrown, or picking ‘*’ will list yourentire inventory. After you’ve chosen what to throw, you will be prompted for a direction rather than fora specific target. The distance something can be thrown depends mainly on the type of object and yourstrength. Arrows can be thrown by hand, but can be thrown much farther and will be more likely to hit
when thrown while you are wielding a bow.
You can simplify the throwing operation by using the ‘Q’ command to select your preferred “missile”,
then using the ‘f’ command to throw it. You’ll be prompted for a direction as above, but you don’t
have to specify which item to throw each time you use ‘f’. There is also an option, autoquiver, which
has NetHack choose another item to automatically fill your quiver (or quiver sack, or have at the ready)when the inventory slot used for ‘Q’ runs out.
Some characters have the ability to fire a volley of multiple items in a single turn. Knowing how toload several rounds of ammunition at once—or hold several missiles in your hand—and still hit a target
is not an easy task. Rangers are among those who are adept at this task, as are those with a high level ofproficiency in the relevant weapon skill (in bow skill if you’re wielding one to shoot arrows, in crossbow
skill if you’re wielding one to shoot bolts, or in sling skill if you’re wielding one to shoot stones). The
number of items that the character has a chance to fire varies from turn to turn. You can explicitly limit
the number of shots by using a numeric prefix before the ‘t’ or ‘f’ command. For example, “2f” (or“n2f” if using number_pad mode) would ensure that at most 2 arrows are shot even if you could havefired 3. If you specify a larger number than would have been shot (“4f” in this example), you’ll just end
up shooting the same number (3, here) as if no limit had been specified. Once the volley is in motion, allof the items will travel in the same direction; if the first ones kill a monster, the others can still continue
beyond that spot.

Weapon proficiency
You will have varying degrees of skill in the weapons available. Weapon proficiency, or weapon skills,
affect how well you can use particular types of weapons, and you’ll be able to improve your skills as you
progress through a game, depending on your role, your experience level, and use of the weapons.
For the purposes of proficiency, weapons have been divided up into various groups such as daggers,
broadswords, and polearms. Each role has a limit on what level of proficiency a character can achievefor each group. For instance, wizards can become highly skilled in daggers or staves but not in swords orbows.
The ‘#enhance’ extended command is used to review current weapons proficiency (also spell proficiency) and to choose which skill(s) to improve when you’ve used one or more skills enough to become
eligible to do so. The skill rankings are “none” (sometimes also referred to as “restricted”, because you

17

won’t be able to advance), “unskilled”, “basic”, “skilled”, and “expert”. Restricted skills simply will notappear in the list shown by ‘#enhance’. (Divine intervention might unrestrict a particular skill, in whichcase it will start at unskilled and be limited to basic.) Some characters can enhance their barehanded
combat or martial arts skill beyond expert to “master” or “grand master”.
Use of a weapon in which you’re restricted or unskilled will incur a modest penalty in the chance tohit a monster and also in the amount of damage done when you do hit; at basic level, there is no penalty
or bonus; at skilled level, you receive a modest bonus in the chance to hit and amount of damage done;
at expert level, the bonus is higher. A successful hit has a chance to boost your training towards the next
skill level (unless you’ve already reached the limit for this skill). Once such training reaches the thresholdfor that next level, you’ll be told that you feel more confident in your skills. At that point you can use‘#enhance’ to increase one or more skills. Such skills are not increased automatically because there isa limit to your total overall skills, so you need to actively choose which skills to enhance and which toignore.

Two-Weapon combat
Some characters can use two weapons at once. Setting things up to do so can seem cumbersome but
becomes second nature with use. To wield two weapons, you need to use the “#twoweapon” command.
But first you need to have a weapon in each hand. (Note that your two weapons are not fully equal;
the one in the hand you normally wield with is considered primary and the other one is consideredsecondary. The most noticeable difference is after you stop–or before you begin, for that matter–wielding
two weapons at once. The primary is your wielded weapon and the secondary is just an item in yourinventory that’s been designated as alternate weapon.)If your primary weapon is wielded but your off hand is empty or has the wrong weapon, use thesequence ‘x’, ‘w’, ‘x’ to first swap your primary into your off hand, wield whatever you want as secondary
weapon, then swap them both back into the intended hands. If your secondary or alternate weapon iscorrect but your primary one is not, simply use ‘w’ to wield the primary. Lastly, if neither hand holds
the correct weapon, use ‘w’, ‘x’, ‘w’ to first wield the intended secondary, swap it to off hand, and thenwield the primary.
The whole process can be simplified via use of the pushweapon option. When it is enabled, then using‘w’ to wield something causes the currently wielded weapon to become your alternate weapon. So thesequence ‘w’, ‘w’ can be used to first wield the weapon you intend to be secondary, and then wield theone you want as primary which will push the first into secondary position.
When in two-weapon combat mode, using the “#twoweapon” command toggles back to single-weapon
mode. Throwing or dropping either of the weapons or having one of them be stolen or destroyed will also
make you revert to single-weapon combat.

Armor (‘[’)
Lots of unfriendly things lurk about; you need armor to protect yourself from their blows. Some types ofarmor offer better protection than others. Your armor class is a measure of this protection. Armor class(AC) is measured as in AD&D, with 10 being the equivalent of no armor, and lower numbers meaning
better armor. Each suit of armor which exists in AD&D gives the same protection in NetHack. Here isan (incomplete) list of the armor classes provided by various suits of armor:

18

dragon scale mailcrystal plate mailsplint maildwarvish mithril-coatchain mailscale mailring mailleather armor
no armor

1
3
4
4
5
6
7
8
10

plate mailbronze plate mailbanded mailelven mithril-coatorcish chain mailstudded leather armor
orcish ring mailleather jacket

3
4
4
5
6
7
8
9

You can also wear other pieces of armor (ex. helmets, boots, shields, cloaks) to lower your armor classeven further, but you can only wear one item of each category (one suit of armor, one cloak, one helmet,
one shield, and so on) at a time.
If a piece of armor is enchanted, its armor protection will be better (or worse) than normal, and its“plus” (or minus) will subtract from your armor class. For example, a +1 chain mail would give you
better protection than normal chain mail, lowering your armor class one unit further to 4. When you
put on a piece of armor, you immediately find out the armor class and any “plusses” it provides. Cursed
pieces of armor usually have negative enchantments (minuses) in addition to being unremovable.
Many types of armor are subject to some kind of damage like rust. Such damage can be repaired.
Some types of armor may inhibit spell casting.
The commands to use armor are ‘W’ (wear) and ‘T’ (take off). The ‘A’ command can also be used totake off armor as well as other worn items.

Food (‘%’)
Food is necessary to survive. If you go too long without eating you will faint, and eventually die ofstarvation. Some types of food will spoil, and become unhealthy to eat, if not protected. Food stored in
ice boxes or tins (“cans”) will usually stay fresh, but ice boxes are heavy, and tins take a while to open.
When you kill monsters, they usually leave corpses which are also “food.” Many, but not all, of theseare edible; some also give you special powers when you eat them. A good rule of thumb is “you are what
you eat.”Some character roles and some monsters are vegetarian. Vegetarian monsters will typically never eat
animal corpses, while vegetarian players can, but with some rather unpleasant side-effects.
You can name one food item after something you like to eat with the fruit option.
The command to eat food is ‘e’.

Scrolls (‘?’)
Scrolls are labeled with various titles, probably chosen by ancient wizards for their amusement value (ex.
“READ ME,” or “THANX MAUD” backwards). Scrolls disappear after you read them (except for blankones, without magic spells on them).
One of the most useful of these is the scroll of identify, which can be used to determine what another object is, whether it is cursed or blessed, and how many uses it has left. Some objects of subtle
enchantment are difficult to identify without these.
A mail daemon may run up and deliver mail to you as a scroll of mail (on versions compiled withthis feature). To use this feature on versions where NetHack mail delivery is triggered by electronic
mail appearing in your system mailbox, you must let NetHack know where to look for new mail by
setting the “MAIL” environment variable to the file name of your mailbox. You may also want to set the“MAILREADER” environment variable to the file name of your favorite reader, so NetHack can shell toit when you read the scroll. On versions of NetHack where mail is randomly generated internal to thegame, these environment variables are ignored. You can disable the mail daemon by turning off the mailoption.
The command to read a scroll is ‘r’.
19

Potions (‘!’)
Potions are distinguished by the color of the liquid inside the flask. They disappear after you quaff them.
Clear potions are potions of water. Sometimes these are blessed or cursed, resulting in holy or unholy
water. Holy water is the bane of the undead, so potions of holy water are good things to throw (‘t’) atthem. It is also sometimes very useful to dip (“#dip”) an object into a potion.
The command to drink a potion is ‘q’ (quaff).

Wands (‘/’)
Magic wands usually have multiple magical charges. Some wands are directional—you must give a
direction in which to zap them. You can also zap them at yourself (just give a ‘.’ or ‘s’ for the direction).
Be warned, however, for this is often unwise. Other wands are nondirectional—they don’t require a
direction. The number of charges in a wand is random and decreases by one whenever you use it.
When the number of charges left in a wand becomes zero, attempts to use the wand will usually resultin nothing happening. Occasionally, however, it may be possible to squeeze the last few mana points
from an otherwise spent wand, destroying it in the process. A wand may be recharged by using suitablemagic, but doing so runs the risk of causing it to explode. The chance for such an explosion starts out
very small and increases each time the wand is recharged.
In a truly desperate situation, when your back is up against the wall, you might decide to go for
broke and break your wand. This is not for the faint of heart. Doing so will almost certainly cause acatastrophic release of magical energies.
When you have fully identified a particular wand, inventory display will include additional informationin parentheses: the number of times it has been recharged followed by a colon and then by its current
number of charges. A current charge count of -1 is a special case indicating that the wand has beencancelled.
The command to use a wand is ‘z’ (zap). To break one, use the ‘a’ (apply) command.

Rings (‘=’)
Rings are very useful items, since they are relatively permanent magic, unlike the usually fleeting effects
of potions, scrolls, and wands.
Putting on a ring activates its magic. You can wear only two rings, one on each ring finger.
Most rings also cause you to grow hungry more rapidly, the rate varying with the type of ring.
The commands to use rings are ‘P’ (put on) and ‘R’ (remove).

Spellbooks (‘+’)
Spellbooks are tomes of mighty magic. When studied with the ‘r’ (read) command, they transfer tothe reader the knowledge of a spell (and therefore eventually become unreadable) — unless the attempt
backfires. Reading a cursed spellbook or one with mystic runes beyond your ken can be harmful to yourhealth!
A spell (even when learned) can also backfire when you cast it. If you attempt to cast a spell well
above your experience level, or if you have little skill with the appropriate spell type, or cast it at a time
when your luck is particularly bad, you can end up wasting both the energy and the time required in
casting.
Casting a spell calls forth magical energies and focuses them with your naked mind. Some of themagical energy released comes from within you, and casting several spells in a row may tire you. Castingof spells also requires practice. With practice, your skill in each category of spell casting will improve.
Over time, however, your memory of each spell will dim, and you will need to relearn it.
Some spells are directional—you must give a direction in which to cast them. You can also cast themat yourself (just give a ‘.’ or ‘s’ for the direction). Be warned, however, for this is often unwise. Other
spells are nondirectional—they don’t require a direction.
20

Just as weapons are divided into groups in which a character can become proficient (to varying
degrees), spells are similarly grouped. Successfully casting a spell exercises its skill group; using the‘#enhance’ command to advance a sufficiently exercised skill will affect all spells within the group. Advanced skill may increase the potency of spells, reduce their risk of failure during casting attempts, andimprove the accuracy of the estimate for how much longer they will be retained in your memory. Skill
slots are shared with weapons skills. (See also the section on “Weapon proficiency”.)
Casting a spell also requires flexible movement, and wearing various types of armor may interfere withthat.
The command to read a spellbook is the same as for scrolls, ‘r’ (read). The ‘+’ command lists eachspell you know along with its level, skill category, chance of failure when casting, and an estimate of how
strongly it is remembered. The ‘Z’ (cast) command casts a spell.

Tools (‘(’)
Tools are miscellaneous objects with various purposes. Some tools have a limited number of uses, akin
to wand charges. For example, lamps burn out after a while. Other tools are containers, which objects
can be placed into or taken out of.
The command to use tools is ‘a’ (apply).

Containers
You may encounter bags, boxes, and chests in your travels. A tool of this sort can be opened with the“#loot” extended command when you are standing on top of it (that is, on the same floor spot), or withthe ‘a’ (apply) command when you are carrying it. However, chests are often locked, and are in any caseunwieldy objects. You must set one down before unlocking it by using a key or lock-picking tool withthe ‘a’ (apply) command, by kicking it with the ‘^D’ command, or by using a weapon to force the lockwith the “#force” extended command.
Some chests are trapped, causing nasty things to happen when you unlock or open them. You cancheck for and try to deactivate traps with the “#untrap” extended command.

Amulets (‘"’)
Amulets are very similar to rings, and often more powerful. Like rings, amulets have various magicalproperties, some beneficial, some harmful, which are activated by putting them on.
Only one amulet may be worn at a time, around your neck.
The commands to use amulets are the same as for rings, ‘P’ (put on) and ‘R’ (remove).

Gems (‘*’)
Some gems are valuable, and can be sold for a lot of gold. They are also a far more efficient way ofcarrying your riches. Valuable gems increase your score if you bring them with you when you exit.
Other small rocks are also categorized as gems, but they are much less valuable. All rocks, however,can be used as projectile weapons (if you have a sling). In the most desperate of cases, you can still
throw them by hand.

Large rocks (‘‘’)
Statues and boulders are not particularly useful, and are generally heavy. It is rumored that some statues
are not what they seem.
Very large humanoids (giants and their ilk) have been known to use boulders as weapons.

21Gold (‘$’)
Gold adds to your score, and you can buy things in shops with it. There are a number of monsters in
the dungeon that may be influenced by the amount of gold you are carrying (shopkeepers aside).

9

Conduct

As if winning NetHack were not difficult enough, certain players seek to challenge themselves by imposing
restrictions on the way they play the game. The game automatically tracks some of these challenges,
which can be checked at any time with the #conduct command or at the end of the game. When you
perform an action which breaks a challenge, it will no longer be listed. This gives players extra “bragging
rights” for winning the game with these challenges. Note that it is perfectly acceptable to win the gamewithout resorting to these restrictions and that it is unusual for players to adhere to challenges the firsttime they win the game.
Several of the challenges are related to eating behavior. The most difficult of these is the foodlesschallenge. Although creatures can survive long periods of time without food, there is a physiologicalneed for water; thus there is no restriction on drinking beverages, even if they provide some minor foodbenefits. Calling upon your god for help with starvation does not violate any food challenges either.
A strict vegan diet is one which avoids any food derived from animals. The primary source of nutritionis fruits and vegetables. The corpses and tins of blobs (‘b’), jellies (‘j’), and fungi (‘F’) are also considered
to be vegetable matter. Certain human food is prepared without animal products; namely, lembas wafers,
cram rations, food rations (gunyoki), K-rations, and C-rations. Metal or another normally indigestible
material eaten while polymorphed into a creature that can digest it is also considered vegan food. Notehowever that eating such items still counts against foodless conduct.
Vegetarians do not eat animals; however, they are less selective about eating animal byproducts thanvegans. In addition to the vegan items listed above, they may eat any kind of pudding (‘P’) other thanthe black puddings, eggs and food made from eggs (fortune cookies and pancakes), food made with milk(cream pies and candy bars), and lumps of royal jelly. Monks are expected to observe a vegetarian diet.
Eating any kind of meat violates the vegetarian, vegan, and foodless conducts. This includes tripe
rations, the corpses or tins of any monsters not mentioned above, and the various other chunks of meatfound in the dungeon. Swallowing and digesting a monster while polymorphed is treated as if you ate thecreature’s corpse. Eating leather, dragon hide, or bone items while polymorphed into a creature that candigest it, or eating monster brains while polymorphed into a mind flayer, is considered eating an animal,
although wax is only an animal byproduct.
Regardless of conduct, there will be some items which are indigestible, and others which are hazardous
to eat. Using a swallow-and-digest attack against a monster is equivalent to eating the monster’s corpse.
Please note that the term “vegan” is used here only in the context of diet. You are still free to choose not
to use or wear items derived from animals (e.g. leather, dragon hide, bone, horns, coral), but the game
will not keep track of this for you. Also note that “milky” potions may be a translucent white, but they
do not contain milk, so they are compatible with a vegan diet. Slime molds or player-defined “fruits”,
although they could be anything from “cherries” to “pork chops”, are also assumed to be vegan.
An atheist is one who rejects religion. This means that you cannot #pray, #offer sacrifices to any
god, #turn undead, or #chat with a priest. Particularly selective readers may argue that playing Monkor Priest characters should violate this conduct; that is a choice left to the player. Offering the Amuletof Yendor to your god is necessary to win the game and is not counted against this conduct. You are also
not penalized for being spoken to by an angry god, priest(ess), or other religious figure; a true atheist
would hear the words but attach no special meaning to them.
Most players fight with a wielded weapon (or tool intended to be wielded as a weapon). Anotherchallenge is to win the game without using such a wielded weapon. You are still permitted to throw, fire,and kick weapons; use a wand, spell, or other type of item; or fight with your hands and feet.
In NetHack , a pacifist refuses to cause the death of any other monster (i.e. if you would get experience
for the death). This is a particularly difficult challenge, although it is still possible to gain experience by22other means.
An illiterate character cannot read or write. This includes reading a scroll, spellbook, fortune cookie
message, or t-shirt; writing a scroll; or making an engraving of anything other than a single “x” (thetraditional signature of an illiterate person). Reading an engraving, or any item that is absolutely
necessary to win the game, is not counted against this conduct. The identity of scrolls and spellbooks(and knowledge of spells) in your starting inventory is assumed to be learned from your teachers prior to
the start of the game and isn’t counted.
There are several other challenges tracked by the game. It is possible to eliminate one or more species
of monsters by genocide; playing without this feature is considered a challenge. When the game offers
you an opportunity to genocide monsters, you may respond with the monster type “none” if you want
to decline. You can change the form of an item into another item of the same type (“polypiling”) or
the form of your own body into another creature (“polyself”) by wand, spell, or potion of polymorph;
avoiding these effects are each considered challenges. Polymorphing monsters, including pets, does notbreak either of these challenges. Finally, you may sometimes receive wishes; a game without an attempt
to wish for any items is a challenge, as is a game without wishing for an artifact (even if the artifact
immediately disappears). When the game offers you an opportunity to make a wish for an item, you may
choose “nothing” if you want to decline.

10

Options

Due to variations in personal tastes and conceptions of how NetHack should do things, there are options
you can set to change how NetHack behaves.

Setting the options
Options may be set in a number of ways. Within the game, the ‘O’ command allows you to view
all options and change most of them. You can also set options automatically by placing them in the“NETHACKOPTIONS” environment variable or in a configuration file. Some versions of NetHack also
have front-end programs that allow you to set options before starting the game or a global configuration
for system administrators.

Using the NETHACKOPTIONS environment variable
The NETHACKOPTIONS variable is a comma-separated list of initial values for the various options.
Some can only be turned on or off. You turn one of these on by adding the name of the option to thelist, and turn it off by typing a ‘!’ or “no” before the name. Others take a character string as a value.
You can set string options by typing the option name, a colon or equals sign, and then the value of thestring. The value is terminated by the next comma or the end of string.
For example, to set up an environment variable so that autoquiver is on, autopickup is off, the nameis set to “Blue Meanie”, and the fruit is set to “papaya”, you would enter the command
setenv NETHACKOPTIONS "autoquiver,\!autopickup,name:Blue Meanie,fruit:papaya"
in csh (note the need to escape the ! since it’s special to the shell), or
NETHACKOPTIONS="autoquiver,!autopickup,name:Blue Meanie,fruit:papaya"
export NETHACKOPTIONSin sh or ksh.

23

Using a configuration file
Any line in the configuration file starting with ‘#’ is treated as a comment. Any line in the configuration filestarting with “OPTIONS=” may be filled out with options in the same syntax as in NETHACKOPTIONS.
Any line starting with “SYMBOLS=” is taken as defining the corresponding symbol in a different syntax, asequence of decimal numbers giving the character position in the current font to be used in displaying
each entry. Such a sequence can be continued to multiple lines by putting a ‘\’ at the end of each line tobe continued.
Any line starting with “AUTOPICKUP_EXCEPTION=” is taken as defining an exception to the “pickup_types”
option. There is a section of this Guidebook that discusses that.
The default name of the configuration file varies on different operating systems, but NETHACKOPTIONS can also be set to the full name of a file you want to use (possibly preceded by an ‘@’).

Customization options
Here are explanations of what the various options do. Character strings that are too long may betruncated. Some of the options listed may be inactive in your dungeon.
Some options are persistent, and are saved and reloaded along with the game. Changing a persistentoption in the configuration file applies only to new games.
acoustics
alignautodig
autoopen
autopickup
autoquiver

blind
bones
bouldercatnamecharactercheckpoint
checkspace

Enable messages about what your character hears (default on). Note that this has
nothing to do with your computer’s audio capabilities. Persistent.
Your starting alignment (align:lawful, align:neutral, or align:chaotic). You
may specify just the first letter. The default is to randomly pick an appropriatealignment. If you prefix ‘!’ or “no” to the value, you can exclude that alignment
from being picked randomly. Cannot be set with the ‘O’ command. Persistent.
Automatically dig if you are wielding a digging tool and moving into a place that canbe dug (default false). Persistent.
Walking into a door attempts to open it (default true). Persistent.
Automatically pick up things onto which you move (default on). Persistent. See“pickup_types” to refine the behavior.
This option controls what happens when you attempt the ‘f’ (fire) command with anempty quiver (or quiver sack or have nothing at the ready). When true, the computer
will fill your quiver or quiver sack or make ready some suitable weapon. Note that it
will not take into account the blessed/cursed status, enchantment, damage, or qualityof the weapon; you are free to manually fill your quiver or quiver sack or make readywith the ‘Q’ command instead. If no weapon is found or the option is false, the ‘t’(throw) command is executed instead. Persistent. (default false)
Start the character permanently blind. Persistent. (default false)
Allow saving and loading bones files. Persistent. (default true)
Set the character used to display boulders (default is rock class symbol).
Name your starting cat (ex. “catname:Morris”). Cannot be set with the ‘O’ command.
Pick your type of character (ex. “character:Monk”); synonym for “role”. See “name”
for an alternate method of specifying your role. Normally only the first letter of thevalue is examined; the string “random” is an exception.
Save game state after each level change, for possible recovery after program crash(default on). Persistent.
Check free disk space before writing files to disk (default on). You may have to turnthis off if you have more than 2 GB free space on the partition used for your save and24

clicklook
cmdassistconfirm
dark_room
disclose

dognameextmenu

femalefixinv
fruit

genderhelp

level files. Only applies when MFLOPPY was defined during compilation.
Allows looking at things on the screen by navigating the mouse over them and clicking
the right mouse button (default off).
Have the game provide some additional command assistance for new players if it
detects some anticipated mistakes (default on).
Have user confirm attacks on pets, shopkeepers, and other peaceable creatures (defaulton). Persistent.
Show out-of-sight areas of lit rooms (default off). Persistent.
Controls what information the program reveals when the game ends. Value is a space
separated list of prompting/category pairs (default is ‘ni na nv ng nc no’, prompt
with default response of ‘n’ for each candidate). Persistent. The possibilities are:i — disclose your inventory;a — disclose your attributes;
v — summarize monsters that have been vanquished;g — list monster species that have been genocided;c — display your conduct;o — display dungeon overview.
Each disclosure possibility can optionally be preceded by a prefix which lets you refine
how it behaves. Here are the valid prefixes:y — prompt you and default to yes on the prompt;n — prompt you and default to no on the prompt;+ — disclose it without prompting;- — do not disclose it and do not prompt.
(ex. “disclose:yi na +v -g o”) The example sets inventory to prompt and default
to yes, attributes to prompt and default to no, vanquished to disclose without
prompting, genocided to not disclose and not prompt, conduct to implicitly promptand default to no, overview to disclose without prompting.
Note that the vanquished monsters list includes all monsters killed by traps and eachother as well as by you. And the dungeon overview shows all levels you had visited
but does not reveal things about them that you hadn’t discovered.
Name your starting dog (ex. “dogname:Fang”). Cannot be set with the ‘O’ command.
Changes the extended commands interface to pop-up a menu of available commands.
It is keystroke compatible with the traditional interface except that it does not requirethat you hit Enter. It is implemented only by the tty port (default off), when thegame has been compiled to support tty graphics.
An obsolete synonym for “gender:female”. Cannot be set with the ‘O’ command.
An object’s inventory letter sticks to it when it’s dropped (default on). If this is off,
dropping an object shifts all the remaining inventory letters. Persistent.
Name a fruit after something you enjoy eating (ex. “fruit:mango”) (default “slime
mold”). Basically a nostalgic whimsy that NetHack uses from time to time. You
should set this to something you find more appetizing than slime mold. Apples,oranges, pears, bananas, and melons already exist in NetHack, so don’t use those.
Your starting gender (gender:male or gender:female). You may specify just thefirst letter. Although you can still denote your gender using the “male” and “female”
options, the “gender” option will take precedence. The default is to randomly pick
an appropriate gender. If you prefix ‘!’ or “no” to the value, you can exclude thatgender from being picked randomly. Cannot be set with the ‘O’ command. Persistent.
If more information is available for an object looked at with the ‘/’ command, ask if
you want to see it (default on). Turning help off makes just looking at things faster,25

since you aren’t interrupted with the “More info?” prompt, but it also means thatyou might miss some interesting and/or important information. Persistent.
hilite_pet
Visually distinguish pets from similar animals (default off). The behavior of thisoption depends on the type of windowing you use. In text windowing, text highlighting
or inverse video is often used; with tiles, generally displays a heart symbol near pets.
hilite_pile
Visually distinguish piles of objects from individual objects (default off). The behaviorof this option depends on the type of windowing you use. In text windowing, text
highlighting or inverse video is often used; with tiles, generally displays a small plussymbol beside the object on the top of the pile.
horsenameName your starting horse (ex. “horsename:Trigger”). Cannot be set with the ‘O’command.
ignintr
Ignore interrupt signals, including breaks (default off). Persistent.
implicit_uncursed Omit “uncursed” from inventory lists, if possible (default on).
legacy
Display an introductory message when starting the game (default on). Persistent.
lit_corridor
Show corridor squares seen by night vision or a light source held by your character as
lit (default off). Persistent.
lootabc
Use the old ‘a’, ‘b’, and ‘c’ keyboard shortcuts when looting, rather than the mnemonics ‘o’, ‘i’, and ‘b’ (default off). Persistent.
mailEnable mail delivery during the game (default on). Persistent.
male
An obsolete synonym for “gender:male”. Cannot be set with the ‘O’ command.
mention_walls
Give feedback when walking against a wall (default off).
menucolors
Enable coloring menu lines (default off). See “Configuring Menu Colors” on how to
configure the colors.
menustyleControls the interface used when you need to choose various objects (in responseto the Drop command, for instance). The value specified should be the first letterof one of the following: traditional, combination, full, or partial. Traditional was
the only interface available for early versions; it consists of a prompt for object classcharacters, followed by an object-by-object prompt for all items matching the selected
object class(es). Combination starts with a prompt for object class(es) of interest,
but then displays a menu of matching objects rather than prompting one-by-one. Fulldisplays a menu of object classes rather than a character prompt, and then a menu ofmatching objects for selection. Partial skips the object class filtering and immediately
displays a menu of all objects. Persistent.
menu_deselect_all Menu character accelerator to deselect all items in a menu. Implemented by theAmiga, Gem, X11 and tty ports. Default ‘-’.
menu_deselect_page Menu character accelerator to deselect all items on this page of a menu. Implemented by the Amiga, Gem and tty ports. Default ‘\’.
menu_first_page Menu character accelerator to jump to the first page in a menu. Implemented by theAmiga, Gem and tty ports. Default ‘^’.
menu_headings
Controls how the headings in a menu are highlighted. Values are “none”, “bold”,“dim”, “underline”, “blink”, or “inverse”. Not all ports can actually display all
types.
menu_invert_all Menu character accelerator to invert all items in a menu. Implemented by the Amiga,
Gem, X11 and tty ports. Default ‘@’.
menu_invert_page Menu character accelerator to invert all items on this page of a menu. Implemented
by the Amiga, Gem and tty ports. Default ‘~’.
menu_last_page
Menu character accelerator to jump to the last page in a menu. Implemented by the26

Amiga, Gem and tty ports. Default ‘|’.
menu_next_page Menu character accelerator to goto the next menu page. Implemented by the Amiga,
Gem and tty ports. Default ‘>’.
menu_objsyms
Show object symbols in menu headings in menus where the object symbols act asmenu accelerators (default off).
menu_previous_page Menu character accelerator to goto the previous menu page. Implemented by theAmiga, Gem and tty ports. Default ‘<’.
menu_search
Menu character accelerator to search for a menu item. Implemented by the Amiga,
Gem, X11 and tty ports. Default ‘:’.
menu_select_all
Menu character accelerator to select all items in a menu. Implemented by the Amiga,
Gem, X11 and tty ports. Default ‘.’.
menu_select_page Menu character accelerator to select all items on this page of a menu. Implemented
by the Amiga, Gem and tty ports. Default ‘,’.
msghistory
The number of top line messages to save (and recall with ‘^P’) (default 20). Cannot
be set with the ‘O’ command.
msg_window
Allows you to change the way recalled messages are displayed. (It is currently implemented for tty only.) The possible values are:s — single message (default; only choice prior to 3.4.0);
c — combination, two messages as single, then as full ;f — full window, oldest message first;
r — full window reversed, newest message first.
For backward compatibility, no value needs to be specified (which defaults to full ),or it can be negated (which defaults to single).
name
Set your character’s name (defaults to your user name). You can also set your character’s role by appending a dash and one or more letters of the role (that is, by
suffixing one of “-A -B -C -H -K -M -P -Ra -Ro -S -T -V -W”). If “-@” is used
for the role, then a random one will be automatically chosen. Cannot be set with the‘O’ command.
news
Read the NetHack news file, if present (default on). Since the news is shown at the
beginning of the game, there’s no point in setting this with the ‘O’ command.
nudistStart the character with no armor (default false). Persistent.
null
Send padding nulls to the terminal (default on). Persistent.
number_pad
Use digit keys instead of letters to move (default 0 or off).
Valid settings are:
0 — move by letters; ‘yuhjklbn’
1 — move by numbers; digit ‘5’ acts as ‘G’ movement prefix
2 — like 1 but ‘5’ works as ‘g’ prefix instead of as ‘G’
3 — by numbers using phone key layout; 123 above, 789 below
4 — combines 3 with 2; phone layout plus MSDOS compatibility-1 — by letters but use ‘z’ to go northwest, ‘y’ to zap wands
For backward compatibility, omitting a value is the same as specifying 1 and negating
number_pad is the same as specifying 0. (Settings 2 and 4 are for compatibility withMSDOS or old PC Hack; in addition to the different behavior for ‘5’, ‘Alt-5’ acts
as ‘G’ and ‘Alt-0’ acts as ‘I’. Setting -1 is to accommodate some German keyboards
which have the location of the ‘y’ and ‘z’ keys swapped.) When moving by numbers,
to enter a count prefix for those commands which accept one (such as “12s” to search
twelve times), precede it with the letter ‘n’ (“n12s”).
packorder
Specify the order to list object types in (default “")[%?+!=/(*‘0_”). The value of
this option should be a string containing the symbols for the various object types.
27

Any omitted types are filled in at the end from the previous order.
paranoid_confirmation A space separated list of specific situations where alternate prompting is desired.
The default is “paranoid_confirmation:pray”.
Confirm for any prompts which are set to require “yes” rather than ‘y’, also require“no” to reject instead of accepting any non-yes response as no;quit
require “yes” rather than ‘y’ to confirm quitting the game or switching into
non-scoring explore mode;die
require “yes” rather than ‘y’ to confirm dying (not useful in normal play;
applies to explore mode);bones
require “yes” rather than ‘y’ to confirm saving bones data when dying in
debug mode
attack require “yes” rather than ‘y’ to confirm attacking a peaceful monster;pray
require ‘y’ to confirm an attempt to pray rather than immediately praying;on by default;
wand require “yes” rather than ‘y’ to confirm breaking a wand;Remove require selection from inventory for ‘R’ and ‘T’ commands even when wearing
just one applicable item.
By default, the pray choice is enabled, the others disabled. To disable it without setting any of the other choices, use “paranoid_confirmation:none”. To keep
it enabled while setting others, include it in the list, such as “paranoid_confirmation:attack pray Remove”.
perm_invent
If true, always display your current inventory in a window. This only makes sense forwindowing system interfaces that implement this feature. Persistent.
pettype
Specify the type of your initial pet, if you are playing a character class that uses
multiple types of pets; or choose to have no initial pet at all. Possible values are“cat”, “dog”, “horse” and “none”. If the choice is not allowed for the role you
are currently playing, it will be silently ignored. For example, “horse” will only behonored when playing a knight. Cannot be set with the ‘O’ command.
pickup_burden
When you pick up an item that would exceed this encumbrance level (Unencumbered,
Burdened, streSsed, straiNed, overTaxed, or overLoaded), you will be asked if you
want to continue. (Default ‘S’). Persistent.
pickup_thrown
If this option is on and “autopickup” is also on, try to pick up things that you threw,even if they aren’t in “pickup_types” or match an autopickup exception. Default is
on. Persistent.
pickup_types
Specify the object types to be picked up when “autopickup” is on. Default is all
types. You can use “autopickup_exception” configuration file lines to further refine“autopickup” behavior. Persistent.
pile_limit
When walking across a pile of objects on the floor, threshold at which the message“there are few/several/many objects here” is given instead of showing a popup list of
those objects. A value of 0 means “no limit” (always list the objects); a value of 1
effectively means “never show the objects” since the pile size will always be at leastthat big; default value is 5. Persistent.
playmode
Values are normal , explore, or debug. Allows selection of explore mode (also known as
discovery mode) or debug mode (also known as wizard mode) instead of normal play.
Debug mode might only be allowed for someone logged in under a particular username (on multi-user systems) or specifying a particular character name (on singleuser systems) or it might be disabled entirely. Requesting it when not allowed or not
possible results in explore mode instead. Default is normal play.
pushweapon
Using the ‘w’ (wield) command when already wielding something pushes the old item

28

race

rest_on_spaceroleroguesymset
rlecomprunmodesafe_petscoresshowexp
showraceshowscoresilentsortloot

sortpack
sparklestandout
statushilites

into your alternate weapon slot (default off). Likewise for the ‘a’ (apply) command
if it causes the applied item to become wielded. Persistent.
Selects your race (for example, “race:human”). Default is random. If you prefix ‘!’or “no” to the value, you can exclude that race from being picked randomly. Cannot
be set with the ‘O’ command. Persistent.
Make the space bar a synonym for the ‘.’ (rest) command (default off). Persistent.
Pick your type of character (ex. “role:Samurai”); synonym for “character ”. See“name” for an alternate method of specifying your role. Normally only the first letterof the value is examined; ‘r’ is an exception with “Rogue”, Ranger”, and “random”
values. If you prefix ‘!’ or “no” to the value, you can exclude that role from being
picked randomly. Persistent.
This option may be used to select one of the named symbol sets found within symbols
to alter the symbols displayed on the screen on the rogue level.
When writing out a save file, perform run length compression of the map. Not all
ports support run length compression. It has no effect on reading an existing savefile.
Controls the amount of screen updating for the map window when engaged in multiturn movement (running via shift+direction or control+direction and so forth, or
via the travel command or mouse click). The possible values are:teleport — update the map after movement has finished;
run — update the map after every seven or so steps;
walk — update the map after each step;
crawl — like walk , but pause briefly after each step.
This option only affects the game’s screen display, not the actual results of moving.
The default is run; versions prior to 3.4.1 used teleport only. Whether or not theeffect is noticeable will depend upon the window port used or on the type of terminal.
Persistent.
Prevent you from (knowingly) attacking your pets (default on). Persistent.
Control what parts of the score list you are shown at the end (ex. “scores:5top
scores/4around my score/own scores”). Only the first letter of each category (‘t’,‘a’ or ‘o’) is necessary. Persistent.
Show your accumulated experience points on bottom line (default off). Persistent.
Display yourself as the glyph for your race, rather than the glyph for your role (default
off). Note that this setting affects only the appearance of the display, not the way
the game treats you. Persistent.
Show your approximate accumulated score on bottom line (default off). Persistent.
Suppress terminal beeps (default on). Persistent.
Controls the sorting behavior of pickup lists for inventory and #loot commands andsome others. Persistent.
The possible values are: full — always sort the lists;loot — only sort the lists that don’t use inventory letters, like with the #loot andpickup commands;
none — show lists the traditional way without sorting.
Sort the pack contents by type when displaying inventory (default on). Persistent.
Display a sparkly effect when a monster (including yourself) is hit by an attack towhich it is resistant (default on). Persistent.
Boldface monsters and “--More--” (default off). Persistent.
Enable coloring of status fields (default off). See “Configuring Status Hilites” for29

suppress_alert
symsettime
timed_delay

tombstone
toptenwin

travelverbosewindowtype
zerocomp

further information.
This option may be set to a NetHack version level to suppress alert notification messages about feature changes for that and prior versions (ex. “suppress_alert:3.3.1”)
This option may be used to select one of the named symbol sets found within symbols
to alter the symbols displayed on the screen.
Show the elapsed game time in turns on bottom line (default off). Persistent.
When pausing momentarily for display effect, such as with explosions and moving
objects, use a timer rather than sending extra characters to the screen. (Applies to“tty” interface only; “X11” interface always uses a timer based delay. The default is
on if configured into the program.) Persistent.
Draw a tombstone graphic upon your death (default on). Persistent.
Put the ending display in a NetHack window instead of on stdout (default off). Setting
this option makes the score list visible when a windowing version of NetHack is started
without a parent window, but it no longer leaves the score list around after game end
on a terminal or emulating window.
Allow the travel command (default on). Turning this option off will prevent the gamefrom attempting unintended moves if you make inadvertent mouse clicks on the map
window. Persistent.
Provide more commentary during the game (default on). Persistent.
Select which windowing system to use, such as “tty” or “X11” (default depends on
version). Cannot be set with the ‘O’ command.
When writing out a save file, perform zero-comp compression of the contents. Not
all ports support zero-comp compression. It has no effect on reading an existing savefile.

Window Port Customization options
Here are explanations of the various options that are used to customize and change the characteristicsof the windowtype that you have chosen. Character strings that are too long may be truncated. Not
all window ports will adjust for all settings listed here. You can safely add any of these options to yourconfig file, and if the window port is capable of adjusting to suit your preferences, it will attempt to do
so. If it can’t it will silently ignore it. You can find out if an option is supported by the window port thatyou are currently using by checking to see if it shows up in the Options list. Some options are dynamic
and can be specified during the game with the ‘O’ command.
align_message
align_status
ascii_map
coloreight_bit_tty
font_map
font_menu
font_message
font_status
font_text
font_size_map

Where to align or place the message window (top, bottom, left, or right)
Where to align or place the status window (top, bottom, left, or right).
NetHack should display an ascii map if it can.
NetHack should display color if it can for different monsters, objects, and dungeon
features
Pass eight-bit character values (for example, specified with the traps option) straight
through to your terminal (default off).
NetHack should use a font by the chosen name for the map window.
NetHack should use a font by the chosen name for menu windows.
NetHack should use a font by the chosen name for the message window.
NetHack should use a font by the chosen name for the status window.
NetHack should use a font by the chosen name for text windows.
NetHack should use this size font for the map window.
30

font_size_menu
NetHack should use this size font for menu windows.
font_size_message NetHack should use this size font for the message window.
font_size_status
NetHack should use this size font for the status window.
font_size_text
NetHack should use this size font for text windows.
fullscreen
NetHack should try and display on the entire screen rather than in a window.
large_font
NetHack should use a large font.
map_mode
NetHack should display the map in the manner specified.
mouse_support
Allow use of the mouse for input and travel.
player_selection
NetHack should pop up dialog boxes or use prompts for character selection.
popup_dialog
NetHack should pop up dialog boxes for input.
preload_tiles
NetHack should preload tiles into memory. For example, in the protected mode
MSDOS version, control whether tiles get pre-loaded into RAM at the start of thegame. Doing so enhances performance of the tile graphics, but uses more memory.
(default on). Cannot be set with the ‘O’ command.
scroll_amount
NetHack should scroll the display by this number of cells when the hero reaches thescroll_margin.
scroll_margin
NetHack should scroll the display when the hero or cursor is this number of cells awayfrom the edge of the window.
selectsaved
NetHack should display a menu of existing saved games for the player to choose fromat game startup, if it can. Not all ports support this option.
softkeyboard
Display an onscreen keyboard. Handhelds are most likely to support this option.
splash_screen
NetHack should display an opening splash screen when it starts up (default yes).
tiled_map
NetHack should display a tiled map if it can.
tile_fileSpecify the name of an alternative tile file to override the default.
tile_height
Specify the preferred height of each tile in a tile capable port.
tile_width
Specify the preferred width of each tile in a tile capable port
use_darkgray
Use bold black instead of blue for black glyphs (TTY only).
use_inverse
NetHack should display inverse when the game specifies it.
vary_msgcount
NetHack should display this number of messages at a time in the message window.
windowcolors
NetHack should display windows with the specified foreground/background colors if
it can.
wraptext
NetHack port should wrap long lines of text if they don’t fit in the visible area of thewindow.

Platform-specific Customization options
Here are explanations of options that are used by specific platforms or ports to customize and change
the port behavior.
altkeyhandler

altmetaaltmeta

Select an alternate keystroke handler dll to load (Win32 tty NetHack only). The
name of the handler is specified without the .dll extension and without any pathinformation. Cannot be set with the ‘O’ command.
On Amiga, this option controls whether typing “Alt” plus another key functions as ameta-shift for that key (default on).
On other (non-Amiga) systems where this option is available, it can be set to tellnethack to convert a two character sequence beginning with ESC into a meta-shifted

31

BIOS

flush
Macgraphics
page_wait
rawio

soundcard
subkeyvalue

video

videocolors

videoshades

version of the second character (default off).
This conversion is only done for commands, not for other input prompts. Note thattyping one or more digits as a count prefix prior to a command—preceded by n if thenumber_pad option is set—is also subject to this conversion, so attempting to abortthe count by typing ESC will leave nethack waiting for another character to complete
the two character sequence. Type a second ESC to finish cancelling such a count. At
other prompts a single ESC suffices.
Use BIOS calls to update the screen display quickly and to read the keyboard (allowing
the use of arrow keys to move) on machines with an IBM PC compatible BIOS ROM(default off, OS/2, PC and ST NetHack only).
(default off, Amiga NetHack only).
(default on, Mac NetHack only).
(default off, Mac NetHack only).
Force raw (non-cbreak) mode for faster output and more bulletproof input (MS-DOS
sometimes treats ‘^P’ as a printer toggle without it) (default off, OS/2, PC and ST
NetHack only). Note: DEC Rainbows hang if this is turned on. Cannot be set withthe ‘O’ command.
(default off, PC NetHack only). Cannot be set with the ‘O’ command.
(Win32 tty NetHack only). May be used to alter the value of keystrokes that theoperating system returns to NetHack to help compensate for international keyboard
issues. OPTIONS=subkeyvalue:171/92 will return 92 to NetHack, if 171 was originally going to be returned. You can use multiple subkeyvalue statements in the config
file if needed. Cannot be set with the ‘O’ command.
Set the video mode used (PC NetHack only). Values are autodetect, default, or vga.
Setting vga (or autodetect with vga hardware present) will cause the game to display
tiles. Cannot be set with the ‘O’ command.
Set the color palette for PC systems using NO_TERMS (default 4-2-6-1-5-3-1512-10-14-9-13-11, PC NetHack only). The order of colors is red, green, brown,
blue, magenta, cyan, bright.white, bright.red, bright.green, yellow, bright.blue,
bright.magenta, and bright.cyan. Cannot be set with the ‘O’ command.
Set the intensity level of the three gray scales available (default dark normal light, PC
NetHack only). If the game display is difficult to read, try adjusting these scales; if
this does not correct the problem, try !color. Cannot be set with the ‘O’ command.

Regular Expressions
Regular expressions are normally POSIX extended regular expressions. It is possible to compile NetHack
without regular expression support on a platform where there is no regular expression library. While
this is not true of any modern platform, if your NetHack was built this way, patterns are instead glob
patterns.

Configuring Autopickup Exceptions
You can further refine the behavior of the “autopickup” option beyond what is available through the“pickup_types” option.
By placing “autopickup_exception” lines in your configuration file, you can define patterns to bechecked when the game is about to autopickup something.
autopickup_exception Sets an exception to the ‘pickup_types’ option. The autopickup_exception option
should be followed by a regular expression to be used as a pattern to match against32

the singular form of the description of an object at your location.
In addition, some characters are treated specially if they occur as the first characterin the pattern, specifically:< — always pickup an object that matches rest of pattern;> — never pickup an object that matches rest of pattern.
A ‘never pickup’ rule takes precedence over an ‘always pickup’ rule if both match.
Exceptions can be set with the ‘O’ command, but ones set that way will not bepreserved across saves and restores.
Here are some examples:
autopickup_exception="<*arrow"autopickup_exception=">*corpse"
autopickup_exception=">* cursed*"
The first example above will result in autopickup of any type of arrow. The second example resultsin the exclusion of any corpse from autopickup. The last example results in the exclusion of items known
to be cursed from autopickup.

Configuring Message Types
You can change the way the messages are shown in the message area, when the message matches auser-defined pattern.
In general, the config file entries to configure the message types look like this:MSGTYPE=type "pattern"
type

pattern

how the message should be shown:show — show message normally.
hide — never show the message.
stop — wait for user with more-prompt.
norep — show the message once, but not again if no other message is shown in
between.
the pattern to match. The pattern should be a regular expression.

Here’s an example of message types using NetHack’s internal pattern matching facility:
MSGTYPE=stop "You feel hungry."
MSGTYPE=hide "You displaced *."specifies that whenever a message “You feel hungry” is shown, the user is prompted with more-prompt,
and a message matching “You displaced <something>” is not shown at all.
The order of the defined MSGTYPE-lines is important; the last matching rule is used. Put the generalcase first, exceptions below them.

Configuring Menu Colors
Some platforms allow you to define colors used in menu lines when the line matches a user-defined pattern.
At this time the tty, win32tty and win32gui support this.
In general, the config file entries to configure the menu color mappings look like this:MENUCOLOR="pattern"=color&attribute
patterncolor

the pattern to match;the color to use for lines matching the pattern;

33attributethe attribute to use for lines matching the pattern. The attribute is optional, and if
left out, you must also leave out the preceding ampersand. If no attribute is defined,no attribute is used.

The pattern should be a regular expression.
Allowed colors are black, red, green, brown, blue, magenta, cyan, gray, orange, lightgreen, yellow,
lightblue, lightmagenta, lightcyan, and white.
Allowed attributes are none, bold, dim, underline, blink, and inverse. Note that the platform used
may interpret the attributes any way it wants.
Here’s an example of menu colors using NetHack’s internal pattern matching facility:
MENUCOLOR="* blessed *"=green
MENUCOLOR="* cursed *"=red
MENUCOLOR="* cursed *(being worn)"=red&underline
specifies that any menu line with ” blessed ” contained in it will be shown in green color, lines with ”
cursed ” will be shown in red, and lines with ” cursed ” followed by ”(being worn)” on the same line will
be shown in red color and underlined. You can have multiple MENUCOLOR entries in your config file,and the last MENUCOLOR-line in your config file that matches a menu line will be used for the line.
Note that if you intend to have one or more color specifications match ” uncursed ”, you will probably
want to turn the implicit_uncursed option off so that all items known to be uncursed are actually displayedwith the “uncursed” description.

Configuring User Sounds
Some platforms allow you to define sound files to be played when a message that matches a user-definedpattern is delivered to the message window. At this time the Qt port and the win32tty and win32guiports support the use of user sounds.
The following config file entries are relevant to mapping user sounds to messages:
SOUNDDIRSOUND

The directory that houses the sound files to be played.
An entry that maps a sound file to a user-specified message pattern. Each SOUND
entry is broken down into the following parts:
MESG — message window mapping (the only one supported in 3.6);
pattern — the pattern to match;sound file — the sound file to play;
volume — the volume to be set while playing the sound file.

The pattern should be a regular expression.

Configuring Status Hilites
Your copy of NetHack may have been compiled with support for Status Hilites. If so, you can customize
your game display by setting thresholds to change the color or appearance of fields in the status display.
For example, the following line in your config file will cause the hitpoints field to display in the color
red if your hitpoints drop to or below a threshold of 30
OPTION=hilite_status: hitpoints/30%/red/normal
For another example, the following line in your config file will cause wisdom to be displayed red if it drops
and green if it rises.
OPTION=hilite_status: wisdom/updown/red/green
You can adjust the display of the following status fields:

34

titleconstitution
charismacarrying-capacity
power-maxHDhitpoints
experiencestrengthintelligencealignment
goldexperience-leveltime
hitpoints-max
condition

dexterity
wisdomscore
power
armor-classhungerdungeon-level

Allowed colors are black, red, green, brown, blue, magenta, cyan, gray, orange, lightgreen, yellow,
lightblue, lightmagenta, lightcyan, and white.
Behaviours can occur based on percentage thresholds, updown, or absolute values. The in-game
options menu can help you determine the correct syntax for a config file.
The whole feature can be disable by setting option statushilites off.

Modifying NetHack Symbols
NetHack can load entire symbol sets from the symbol file.
The options that are used to select a particular symbol set from the symbol file are:symsetroguesymset

Set the name of the symbol set that you want to load. symbols.
Set the name of the symbol set that you want to load for display on the rogue level.

You can also override one or more symbols using the SYMBOLS config file option. Symbols are
specified as name:value pairs. Note that NetHack escape-processes the value string in conventional C
fashion. This means that ‘\’ is a prefix to take the following character literally. Thus ‘\’ needs to be
represented as ‘\\’. The special escape form ‘\m’ switches on the meta bit in the symbol value, and the‘^’ prefix causes the following character to be treated as a control character.
Table 1: NetHack Symbols
Default

Symbol Name

Description

_
"
A
a
^
[
[
^
0
#
B
^
b
+
)
(
‘
C
_
#
c

S_air
S_altarS_amulet
S_angel
S_ant
S_anti_magic_trap
S_armorS_armourS_arrow_trap
S_ball
S_bars
S_bat
S_bear_trap
S_blcorn
S_blob
S_book
S_boomleft
S_boomrightS_boulder
S_brcorn
S_centaur
S_chain
S_cloud
S_cockatrice(air)(altar)(amulet)(angelic being)(ant or other insect)(anti-magic field)(suit or piece of armor)(suit or piece of armor)(arrow trap)(iron ball)(iron bars)(bat or bird)(bear trap)(bottom left corner)(blob)(spellbook)(boomerang open left)(boomerang open right)(boulder)(bottom right corner)(centaur)(iron chain)(cloud)(cockatrice)35

Table 1: NetHack Symbols
Default

Symbol Name

Description

$
#
^
&
*
>
>
d
D
;
E
/
\
|

S_coinS_corr
S_crwall
S_dart_trap
S_demon
S_digbeam
S_dnladder
S_dnstair
S_dog
S_dragon
S_eel
S_elemental
S_explode1
S_explode2
S_explode3
S_explode4
S_explode5
S_explode6
S_explode7
S_explode8
S_explode9
S_eye
S_falling_rock_trap
S_feline
S_fire_trap
S_flashbeam
S_foodS_fountain
S_fungus
S_gem
S_ghostS_giant
S_gnome
S_golem
S_grave
S_gremlin
S_hbeam
S_hcdbridge
S_hcdoor
S_hodbridge
S_hodoor
S_holeS_humanS_humanoid
S_hwall
S_ice
S_imp
S_jabberwock
S_jelly
S_kobold
S_kop
S_land_mine
S_lavaS_leprechaun(pile of coins)(corridor)(wall)(dart trap)(major demon)(dig beam)(ladder down)(staircase down)(dog or other canine)(dragon)(sea monster)(elemental)(explosion top left)(explosion top center)(explosion top right)(explosion middle left)(explosion middle center)(explosion middle right)(explosion bottom left)(explosion bottom center)(explosion bottom right)(eye or sphere)(falling rock trap)(cat or other feline)(fire trap)(flash beam)(piece of food)(fountain)(fungus or mold)(gem or rock)(ghost)(giant humanoid)(gnome)(golem)(grave)(gremlin)(wall)(horizontal raised drawbridge)(closed door)(horizontal lowered drawbridge)(open door)(hole)(human or elf)
(humanoid)(horizontal wall)(ice)(imp or minor demon)(jabberwock)(jelly)(kobold)(Keystone Kop)
(land mine)(molten lava)(leprechaun)

|
\
/
e
^
f
^
!
%
{
F
*
H
G
’
|
g
#
+
.
|
^
@
h
.
i
J
j
k
K
^
}
l

36

Table 1: NetHack Symbols
Default

Symbol Name

Description

^
L
y
#
:
\
^
^
m
]
M
N
.
n
O
o
p
^
#
^
}
!
P
q
Q
=
‘
r
^
.
/
^
R
?
#
^
S
s
^
^
0
#
@
*
^

S_level_teleporter
S_lichS_light
S_litcorr
S_lizard
S_lslant
S_magic_portal
S_magic_trap
S_mimic
S_mimic_def
S_mummyS_nagaS_ndoorS_nymphS_ogre
S_orc
S_piercer
S_pit
S_poisoncloudS_polymorph_trap
S_pool
S_potion
S_pudding
S_quadruped
S_quantmech
S_ringS_rock
S_rodent
S_rolling_boulder_trap
S_room
S_rslant
S_rust_trap
S_rustmonst
S_scroll
S_sink
S_sleeping_gas_trap
S_snakeS_spiderS_spiked_pit
S_squeaky_board
S_ss1
S_ss2
S_ss3
S_ss4
S_statue_trap
S_stoneS_sw_bc
S_sw_blS_sw_br
S_sw_ml
S_sw_mr
S_sw_tc
S_sw_tl
S_sw_tr(level teleporter)(lich)(light)(lit corridor)(lizard)(wall)(magic portal)(magic trap)(mimic)(mimic)(mummy)(naga)(doorway)(nymph)(ogre)(orc)(piercer)(pit)(poison cloud)(polymorph trap)(water)(potion)(pudding or ooze)(quadruped)(quantum mechanic)(ring)(boulder or statue)(rodent)(rolling boulder trap)(floor of a room)(wall)(rust trap)(rust monster or disenchanter)(scroll)(sink)(sleeping gas trap)(snake)(arachnid or centipede)(spiked pit)
(squeaky board)(magic shield 1 of 4)(magic shield 2 of 4)(magic shield 3 of 4)(magic shield 4 of 4)(statue trap)(dark part of a room)(swallow bottom center)(swallow bottom left)(swallow bottom right )(swallow middle left)(swallow middle right)(swallow top center)(swallow top left)(swallow top right)

\
/
|
|
/
\

37

Table 1: NetHack Symbols
Default

Symbol Name

Description

^
\
|
(
^
t
#
T
|
U
u
<
<
V
|
#
+
.
^
.
v
|
/
}
)
"
w
~
W
x
X
Y
Z
z

S_tdwall
S_teleportation_trap
S_throne
S_tlcorn
S_tlwall
S_tool
S_trap_door
S_trapper
S_trcorn
S_treeS_troll
S_trwallS_tuwall
S_umber
S_unicorn
S_upladder
S_upstair
S_vampire
S_vbeam
S_vcdbridge
S_vcdoor
S_venom
S_vibrating_square
S_vodbridge
S_vodoor
S_vortex
S_vwall
S_wandS_water
S_weapon
S_web
S_worm
S_worm_tailS_wraith
S_xan
S_xornS_yetiS_zombie
S_zruty(wall)(teleportation trap)(opulent throne)(top left corner)(wall)(useful item (pick-axe key lamp...))(trap door)(trapper or lurker above)(top right corner)(tree)(troll)(wall)(wall)(umber hulk)(unicorn or horse)(ladder up)(staircase up)(vampire)(wall)(vertical raised drawbridge)(closed door)(splash of venom)(vibrating square)(vertical lowered drawbridge)(open door)(vortex)(vertical wall)(wand)(water)(weapon)(web)(worm)(long worm tail)(wraith)(xan or other mythical/fantastic insect)(xorn)(apelike creature)(zombie)(zruty)Configuring NetHack for Play by the Blind
NetHack can be set up to use only standard ASCII characters for making maps of the dungeons. This
makes the MS-DOS versions of NetHack completely accessible to the blind who use speech and/or Brailleaccess technologies. Players will require a good working knowledge of their screen-reader’s review features,and will have to know how to navigate horizontally and vertically character by character. They will alsofind the search capabilities of their screen-readers to be quite valuable. Be certain to examine thisGuidebook before playing so you have an idea what the screen layout is like. You’ll also need to be able
to locate the PC cursor. It is always where your character is located. Merely searching for an @-sign will
not always find your character since there are other humanoids represented by the same sign. Your screenreader should also have a function which gives you the row and column of your review cursor and the PC
cursor. These co-ordinates are often useful in giving players a better sense of the overall location of items

38

on the screen. While it is not difficult for experienced users to edit the defaults.nh file to accomplish this,novices may find this task somewhat daunting. Included within the symbol file of all official distributionsof NetHack is a symset called NHAccess. Selecting that symset in your configuration file will cause thegame to run in a manner accessible to the blind. After you have gained some experience with the gameand with editing files, you may want to alter settings via SYMBOLS= in your configuration file to better
suit your preferences. The most crucial settings to make the game accessible are:symset:NHAccess Load a symbol set appropriate for use by blind players.
roguesymset:NHAccess Load a symbol set for the rogue level that is appropriate for use by blind players.
menustyle:traditional This will assist in the interface to speech synthesizers.
number_pad
A lot of speech access programs use the number-pad to review the screen. If this is thecase, disable the number_pad option and use the traditional Rogue-like commands.

Global Configuration for System Administrators
If NetHack is compiled with the SYSCF option, a system administrator should set up a global configuration; this is a file in the same format as the traditional per-user configuration file (see above).
This file should be named sysconf and placed in the same directory as the other NetHack support
files. The options recognized in this file are listed below. Any option not set uses a compiled-in default(which may not be appropriate for your system).
WIZARDS

A space-separated list of user name who are allowed to play in wizard mode (thedebugging mode, not the magic-useing role). A value of a single asterisk (*) allows
anyone to start a game in wizard mode.
SHELLERS
A list of users who are allowed to use the shell escape command (!). The syntax isthe same as WIZARDS.
EXPLORERS
A list of users who are allowed to use the explore mode. The syntax is the same as
WIZARDS.
MAXPLAYERS Limit the maximum number of games taht can be running at the same time.
SUPPORT
A string explainign how to get local support (no default value).
RECOVERA string explaining how to recover a game on this system (no default value).
SEDUCE
0 or 1 to disable or enable, respectively, the SEDUCE option (see the source) for
details on this function.
CHECK_SAVE_UID 0 or 1 to disable or enable, respectively, the UID checking for savefiles.
The following options affect the score file:PERSMAXENTRYMAX
POINTSMINPERS_IS_UID

11

Maximum number of entries for one person
Maximum number of entries in the score file
Minimum number of points to get an entry in the score file.
0 or 1 to use user names or numeric userids, respectively, to identify unique people
for the score file

Scoring

NetHack maintains a list of the top scores or scorers on your machine, depending on how it is set up. In
the latter case, each account on the machine can post only one non-winning score on this list. If you scorehigher than someone else on this list, or better your previous score, you will be inserted in the proper
place under your current name. How many scores are kept can also be set up when NetHack is compiled.
Your score is chiefly based upon how much experience you gained, how much loot you accumulated,
how deep you explored, and how the game ended. If you quit the game, you escape with all of your gold
39

intact. If, however, you get killed in the Mazes of Menace, the guild will only hear about 90 % of yourgold when your corpse is discovered (adventurers have been known to collect finder’s fees). So, consider
whether you want to take one last hit at that monster and possibly live, or quit and stop with whatever
you have. If you quit, you keep all your gold, but if you swing and live, you might find more.
If you just want to see what the current top players/games list is, you can type
nethack -s allon most versions.

12

Explore mode

NetHack is an intricate and difficult game. Novices might falter in fear, aware of their ignorance of themeans to survive. Well, fear not. Your dungeon comes equipped with an “explore” or “discovery” modethat enables you to keep old save files and cheat death, at the paltry cost of not getting on the high score
list.
There are two ways of enabling explore mode. One is to start the game with the -X command-line
switch or with the playmode:explore option. The other is to issue the ‘#exploremode’ extended command
while already playing the game. Starting a new game in explore mode provides your character with awand of wishing in initial inventory; switching during play does not. The other benefits of explore mode
are left for the trepid reader to discover.

Debug mode
Debug mode, also known as wizard mode, is undocumented aside from this brief description. It is intended
for tracking down problems within the program rather than to provide god-like powers to your character,and players who attempt debugging are expected to figure out how to use it themselves. It is initiatedby starting the game with the -D command-line switch or with the playmode:debug option.
For some systems, the player must be logged in under a particular user name to be allowed to use
debug mode; for others, the hero must be given a particular character name (but may be any role; there’s
no connection between “wizard mode” and the Wizard role). And on any system, the program might
have been configured to omit debug mode entirely. Attempting to start a game in debug mode when notallowed or not available will result in falling back to explore mode instead.

13

Credits

The original hack game was modeled on the Berkeley UNIX rogue game. Large portions of this paper
were shamelessly cribbed from A Guide to the Dungeons of Doom, by Michael C. Toy and Kenneth C.
R. C. Arnold. Small portions were adapted from Further Exploration of the Dungeons of Doom, by Ken
Arromdee.
NetHack is the product of literally dozens of people’s work. Main events in the course of the gamedevelopment are described below:
Jay Fenlason wrote the original Hack with help from Kenny Woodland, Mike Thome, and Jon Payne.
Andries Brouwer did a major re-write, transforming Hack into a very different game, and published (atleast) three versions (1.0.1, 1.0.2, and 1.0.3) for UNIX machines to the Usenet.
Don G. Kneller ported Hack 1.0.3 to Microsoft C and MS-DOS, producing PC Hack 1.01e, added support
for DEC Rainbow graphics in version 1.03g, and went on to produce at least four more versions (3.0, 3.2,
3.51, and 3.6).
R. Black ported PC Hack 3.51 to Lattice C and the Atari 520/1040ST, producing ST Hack 1.03.

40

Mike Stephenson merged these various versions back together, incorporating many of the added features,and produced NetHack version 1.4. He then coordinated a cast of thousands in enhancing and debugging
NetHack 1.4 and released NetHack versions 2.2 and 2.3.
Later, Mike coordinated a major rewrite of the game, heading a team which included Ken Arromdee,
Jean-Christophe Collet, Steve Creps, Eric Hendrickson, Izchak Miller, Eric S. Raymond, John Rupley,
Mike Threepoint, and Janet Walz, to produce NetHack 3.0c.
NetHack 3.0 was ported to the Atari by Eric R. Smith, to OS/2 by Timo Hakulinen, and to VMS by
David Gentzel. The three of them and Kevin Darcy later joined the main development team to produce
subsequent revisions of 3.0.
Olaf Seibert ported NetHack 2.3 and 3.0 to the Amiga. Norm Meluch, Stephen Spackman and Pierre
Martineau designed overlay code for PC NetHack 3.0. Johnny Lee ported NetHack 3.0 to the Macintosh.
Along with various other Dungeoneers, they continued to enhance the PC, Macintosh, and Amiga ports
through the later revisions of 3.0.
Headed by Mike Stephenson and coordinated by Izchak Miller and Janet Walz, the development teamwhich now included Ken Arromdee, David Cohrs, Jean-Christophe Collet, Kevin Darcy, Matt Day, Timo
Hakulinen, Steve Linhart, Dean Luick, Pat Rankin, Eric Raymond, and Eric Smith undertook a radical
revision of 3.0. They re-structured the game’s design, and re-wrote major parts of the code. They added
multiple dungeons, a new display, special individual character quests, a new endgame and many othernew features, and produced NetHack 3.1.
Ken Lorber, Gregg Wonderly and Greg Olson, with help from Richard Addison, Mike Passaretti, and Olaf
Seibert, developed NetHack 3.1 for the Amiga.
Norm Meluch and Kevin Smolkowski, with help from Carl Schelin, Stephen Spackman, Steve VanDevender, and Paul Winner, ported NetHack 3.1 to the PC.
Jon W{tte and Hao-yang Wang, with help from Ross Brown, Mike Engber, David Hairston, Michael
Hamel, Jonathan Handler, Johnny Lee, Tim Lennan, Rob Menke, and Andy Swanson, developed NetHack
3.1 for the Macintosh, porting it for MPW. Building on their development, Barton House added a Think
C port.
Timo Hakulinen ported NetHack 3.1 to OS/2. Eric Smith ported NetHack 3.1 to the Atari. Pat Rankin,with help from Joshua Delahunty, was responsible for the VMS version of NetHack 3.1. Michael Allison
ported NetHack 3.1 to Windows NT.
Dean Luick, with help from David Cohrs, developed NetHack 3.1 for X11. Warwick Allison wrote a tiled
version of NetHack for the Atari; he later contributed the tiles to the DevTeam and tile support was thenadded to other platforms.
The 3.2 development team, comprised of Michael Allison, Ken Arromdee, David Cohrs, Jessie Collet,
Steve Creps, Kevin Darcy, Timo Hakulinen, Steve Linhart, Dean Luick, Pat Rankin, Eric Smith, Mike
Stephenson, Janet Walz, and Paul Winner, released version 3.2 in April of 1996.
Version 3.2 marked the tenth anniversary of the formation of the development team. In a testament totheir dedication to the game, all thirteen members of the original development team remained on theteam at the start of work on that release. During the interval between the release of 3.1.3 and 3.2, oneof the founding members of the development team, Dr. Izchak Miller, was diagnosed with cancer andpassed away. That release of the game was dedicated to him by the development and porting teams.
During the lifespan of NetHack 3.1 and 3.2, several enthusiasts of the game added their own modifications to the game and made these “variants” publicly available:
Tom Proudfoot and Yuval Oren created NetHack++, which was quickly renamed NetHack−−. Working independently, Stephen White wrote NetHack Plus. Tom Proudfoot later merged NetHack Plus and41his own NetHack−− to produce SLASH. Larry Stewart-Zerba and Warwick Allison improved the spell
casting system with the Wizard Patch. Warwick Allison also ported NetHack to use the Qt interface.
Warren Cheung combined SLASH with the Wizard Patch to produce Slash’em, and with the help of
Kevin Hugo, added more features. Kevin later joined the DevTeam and incorporated the best of theseideas into NetHack 3.3.
The final update to 3.2 was the bug fix release 3.2.3, which was released simultaneously with 3.3.0 in
December 1999 just in time for the Year 2000.
The 3.3 development team, consisting of Michael Allison, Ken Arromdee, David Cohrs, Jessie Collet,
Steve Creps, Kevin Darcy, Timo Hakulinen, Kevin Hugo, Steve Linhart, Ken Lorber, Dean Luick, Pat
Rankin, Eric Smith, Mike Stephenson, Janet Walz, and Paul Winner, released 3.3.0 in December 1999
and 3.3.1 in August of 2000.
Version 3.3 offered many firsts. It was the first version to separate race and profession. The Elf class
was removed in preference to an elf race, and the races of dwarves, gnomes, and orcs made their first
appearance in the game alongside the familiar human race. Monk and Ranger roles joined Archeologists,
Barbarians, Cavemen, Healers, Knights, Priests, Rogues, Samurai, Tourists, Valkyries and of course,
Wizards. It was also the first version to allow you to ride a steed, and was the first version to have apublicly available web-site listing all the bugs that had been discovered. Despite that constantly growing
bug list, 3.3 proved stable enough to last for more than a year and a half.
The 3.4 development team initially consisted of Michael Allison, Ken Arromdee, David Cohrs, Jessie
Collet, Kevin Hugo, Ken Lorber, Dean Luick, Pat Rankin, Mike Stephenson, Janet Walz, and Paul
Winner, with Warwick Allison joining just before the release of NetHack 3.4.0 in March 2002.
As with version 3.3, various people contributed to the game as a whole as well as supporting ports on
the different platforms that NetHack runs on:
Pat Rankin maintained 3.4 for VMS.
Michael Allison maintained NetHack 3.4 for the MS-DOS platform. Paul Winner and Yitzhak Sapir
provided encouragement.
Dean Luick, Mark Modrall, and Kevin Hugo maintained and enhanced the Macintosh port of 3.4.
Michael Allison, David Cohrs, Alex Kompel, Dion Nicolaas, and Yitzhak Sapir maintained and enhanced
3.4 for the Microsoft Windows platform. Alex Kompel contributed a new graphical interface for the
Windows port. Alex Kompel also contributed a Windows CE port for 3.4.1.
Ron Van Iwaarden was the sole maintainer of NetHack for OS/2 the past several releases. Unfortunately
Ron’s last OS/2 machine stopped working in early 2006. A great many thanks to Ron for keeping NetHack
alive on OS/2 all these years.
Janne Salmijärvi and Teemu Suikki maintained and enhanced the Amiga port of 3.4 after Janne Salmijärvi
resurrected it for 3.3.1.
Christian “Marvin” Bressler maintained 3.4 for the Atari after he resurrected it for 3.3.1.
The release of NetHack 3.4.3 in December 2003 marked the beginning of a long release hiatus. 3.4.3
proved to be a remarkably stable version that provided continued enjoyment by the community for morethan a decade. The devteam slowly and quietly continued to work on the game behind the scenes
during the tenure of 3.4.3. It was during that same period that several new variants emerged within the
NetHack community. Notably sporkhack by Derek S. Ray, unnethack by Patric Mueller, nitrohack andits successors originally by Daniel Thaler and then by Alex Smith, and Dynahack by Tung Nguyen. Someof those variants continue to be developed, maintained, and enjoyed by the community to this day.
At the beginning of development for what would eventually get released as 3.6.0, the development
team consisted of Warwick Allison, Michael Allison, Ken Arromdee, David Cohrs, Jessie Collet, Ken
42

Lorber, Dean Luick, Pat Rankin, Mike Stephenson, Janet Walz, and Paul Winner. Leading up to therelease of 3.6.0 in early 2015, new members Sean Hunt, Pasi Kallinen, and Derek S. Ray joined the
NetHack development team.
In September 2014, an interim snapshot of the code under development was released publicly by otherparties. Since that code was a work-in-progress and had not gone through the process of debugging it
as a suitable release, it was decided that the version numbers present on that code snapshot would be
retired and never used in an official NetHack release. An announcement was posted on the devteam’s
official nethack.org website to that effect, stating that there would never be a 3.4.4, 3.5, or 3.5.0 official
release version.
In November 2014, preparation began for the release of NetHack 3.6. The 3.6 version merges work
done by the development team since the previous release with some of the beloved community patches.
Many bugs were fixed and a large amount of code was restructured.
The development team, as well as Steve VanDevender and Kevin Smolkowski ensured that NetHack
3.6.0 continued to operate on various Unix flavors and maintained the X11 interface.
Ken Lorber, Haoyang Wang, Pat Rankin, and Dean Luick maintained the port of NetHack 3.6.0 for
Mac.
Michael Allison, Derek S. Ray, Yitzhak Sapir, Alex Kompel, and Dion Nicolaas maintained the portof NetHack 3.6.0 for Microsoft Windows.
The official NetHack web site is maintained by Ken Lorber at http://www.nethack.org/.

Shout Outs
The devteam would like to give a special ”shout-out” to thank the generous people primarily responsible
for the public NetHack servers available for playing the game at nethack.alt.org and devnull.net. In
addition to providing a way for the public to play a game of NetHack from almost anywhere, they havehosted annual NetHack tournaments for many, many years. On behalf of the NetHack community, thankyou very much to M. Drew Streib, Pasi Kallinen and Robin Bandy.

43

Dungeoneers
From time to time, some depraved individual out there in netland sends a particularly intriguing modification to help out with the game. The Gods of the Dungeon sometimes make note of the names of theworst of these miscreants in this, the list of Dungeoneers:
Adam Aronow
Alex Kompel
Andreas Dorn
Andy Church
Andy Swanson
Ari Huttunen
Barton House
Benson I. Margulies
Bill Dyer
Boudewijn Waijers
Bruce Cox
Bruce Holloway
Bruce Mewborne
Carl Schelin
Chris Russo
David Cohrs
David DamerellDavid Gentzel
David Hairston
Dean LuickDel Lamb
Derek S. Ray
Deron Meranda
Dion Nicolaas
Dylan O’Donnell
Eric Backus
Eric Hendrickson
Eric R. Smith
Eric S. RaymondErik Andersen

Frederick Roeber
Gil Neiger
Greg Laskin
Greg Olson
Gregg Wonderly
Hao-yang Wang
Helge Hafting
Irina Rempt-Drijfhout
Izchak Miller
J. Ali Harlow
Janet Walz
Janne Salmijärvi
Jean-Christophe Collet
Jeff Bailey
Jochen Erwied
John Kallen
John Rupley
John S. Bien
Johnny Lee
Jon W{tteJonathan Handler
Joshua Delahunty
Keizo Yamamoto
Ken Arnold
Ken Arromdee
Ken Lorber
Ken Washikita
Kevin Darcy
Kevin Hugo
Kevin Sitze

44

Kevin Smolkowski
Kevin Sweet
Lars Huttar
Leon Arnott
M. Drew Streib
Malcolm Ryan
Mark Gooderum
Mark Modrall
Marvin Bressler
Matthew Day
Merlyn LeRoy
Michael Allison
Michael Feir
Michael Hamel
Michael Sokolov
Mike Engber
Mike Gallop
Mike Passaretti
Mike Stephenson
Mikko Juola
Nathan Eady
Norm Meluch
Olaf Seibert
Pasi Kallinen
Pat Rankin
Paul Winner
Pierre Martineau
Ralf Brown
Ray Chason
Richard Addison

Richard BeigelRichard P. Hughey
Rob Menke
Robin Bandy
Robin Johnson
Roderick Schertler
Roland McGrath
Ron Van Iwaarden
Ronnen Miller
Ross Brown
Sascha Wostmann
Scott Bigham
Scott R. Turner
Sean Hunt
Stephen Spackman
Stefan Thielscher
Stephen White
Steve Creps
Steve Linhart
Steve VanDevender
Teemu Suikki
Tim Lennan
Timo Hakulinen
Tom Almy
Tom West
Warren Cheung
Warwick Allison
Yitzhak Sapir