Stage Additions

The stages are more alive than ever! From discovering prehistoric caves to exploring abandoned sewer plants, Fiend Folio adds new backdrops and changes to each floor to solidify their theme and feeling.

## Basement

**Basement**, as the most classic and the easiest floor in the game didn't get that much attention as other floors. But it doesn't mean it got no attention as well!

Fiend Folio's Basement is themed around flies, poop and Isaac himself. This means that you can encounter a bunch of fly or poop enemies and also those resembling Isaac in some shape or form.

Common Enemies

Rare Enemies

## Cellar

**Cellar** always was a spider-infested place. But what's that? Bees?

It seems like bees have invaded the Cellar as well! Throughout your journey across this place, you may encounter some rooms whose walls are covered with honey and patches of honeycombs. *Bee-ware!* These little insects want only one thing, and it's to stab you with their stingers!

Common Enemies

Rare Enemies

## Burning Basement

**Burning Basement** is hotter than ever! With Fiend Folio, a new mechanic comes - flammable powder!

Many enemies in Burning Basement leave flammable powder in a similar fashion to creep. The powder on its own is harmless but as soon as it gets in contact with flames or an explosion, it gets really nasty! And there's a lot of new burning enemies as well!

Common Enemies

Rare Enemies

### Smoky Basement

Some rooms will have differently colored walls and obstacles. They contain mostly ash-based enemies.

## Caves

**Caves** are more alive than ever! Prehistoric creatures, ancient dwellers and mysterious aberrations await.

Common Enemies

Rare Enemies

### Primitive Caves

Some rooms look more ancient than the others. If you take a closer look, you can spot some prehistoric drawings on the rocks and walls have some fossils in them!

## Catacombs

If you thought **Catacombs** were boring, think no more! This floor received a completely new theme! It now contains many cryptid-based enemies but it also draws a lot from the Cellar, bringing back your favourite spiders and even bees!

Common Enemies

Rare Enemies

## Flooded Caves

**Flooded Caves** are even more flooded! Foes here aren't afraid to get a little wet, with some enemies like Madclaw, Fishface, and Frog diving beneath and out of the water to cause Isaac! Many enemies have bubble-based attacks. Hope you know how to swim!

Common Enemies

Rare Enemies

## Depths

**Depths** are haunted! Face the most terrifying ghosts like Gnawful, Spook or Mistmonger, fight against the Scythe Rider and duel against the Squire while exploring this ghoulish place!

Common Enemies

Rare Enemies

## Necropolis

In **Necropolis**, undead rise from graves! Are you brave enough to face monsters like the Possessed, Ribeye or Baro?

Common Enemies

Rare Enemies

## Dank Depths

Filthy, slimey, gooey, dark... many such words describe the **Dank Depths** and the new aberrations that stalk its sticky halls! Watch your step!

Common Enemies

Rare Enemies

### Pipe Depths

Some rooms appear to be remains of an old factory or sewage systems, creating a very unique, industrial look.

### Dankier Depths

Some rooms on the other hand were made to look more *dank* than regular depths.

## Womb

Enter the **Womb**, a place where unborn fetuses, sentient flesh and other disgusting creatures dwell...

Common Enemies

Rare Enemies

## Utero

**Utero** is a place where organs live on their own! Brains and guts sliding across the floor, eyes staring at you from the walls... A heart's beat echoes through the air...

Common Enemies

Rare Enemies

### Eyeball Utero

Some walls have eyes! Mother is watching!

## Scarred Womb

The smell of death and decay hangs in the air. **Scarred Womb** is definitely not a safe place! Do not stop or terrifying dwellers of this domain will eat you alive!

Common Enemies

Rare Enemies

## Blue Womb

Although nothing spawns on this floor (except Hush), **Blue Womb** also got a bit of touch. Check out these fancy rocks!

## Sheol

A new species has invaded the **Sheol**! Psions are based on Beholders from Dungeons & Dragons and they're no less dangerous!

Common Enemies

Rare Enemies

## Cathedral

Angels, watchers and holy creatures, these are the habitants of **Cathedral**. Prepare for a big fight if you're brave enough to enter this sacred place.

Common Enemies

Rare Enemies

## Dark Room

**Dark Room** is a scary place where memories die. Prepare to meet monsters from all chapters, ready to eat you alive!

## The Chest

A place for everything that has been forgotten. Are you ready to fight your own nightmares? If yes, **The Chest** awaits with its doors open.

## The Void

Although The Void is a fusion of all chapters, it also got some touch! Rocks and pits are totally randomized and do not care about the backdrop!

## Special Rooms

Various special rooms also got rehauled, giving them a completely new look!

### Shop

Looks like Greed has made some renovations! Shops are more shoppy!

### Arcade

Arcades greet you with their new appearance! Gamble, play and have fun!

### Challenge Room

Challenge Rooms got a totally unique look! Feel like a champion and fight for your reward!

### Secret Room

Secret Rooms are more ominous than ever! Who knows what you might find this time?

### Crawlspace

Crawlspaces are more exciting than ever! Prepare for crazy puzzles, platform jumping, all in the fantastic coat of one of four different backdrops!

Common Enemies

Rare Enemies

#### Luscious Crawlspace

This version of the Crawlspace is overgrown with plants!

#### Ossuary Crawlspace

This version of the Crawlspace seems to be a part of Necropolis. Bones and skulls are everywhere!

#### Pipe Crawlspace

This version of the Crawlspace seems to be a part of an abandoned sewage system.

### Dice Room

In Dice Rooms, everything is a dice! Rocks, pots, even dice are made of dice!

### Error Room

Error rooms, as their name suggests, are full of errors. Rocks are glitched and out of bounds!

## Other Additions

Fiend Folio focuses on small things as well! Items like D12 are more enjoyable when playing with FF!

### Chapter 6 Alt Rocks

Dark Room's gravestones and Chest's dolls can hide some spicy surprises! Watch out with those bombs!

When destroyed, a gravestone in Dark Room may spawn:

* Wizoob
* Red Ghost
* Lil Haunt
* Yawner
* Ghostse

* Cursed Penny

* Bony
* Black Bony
* Crepitus
* Bone Heart

When destroyed, a doll in The Chest may spawn:

* Bony
* Black Bony
* Crepitus
* Bone Heart
* Sackboy
* Cracker
* Possessed
* Naked Curdle
* Neonate
* Detached Nuchal
* Cursed Penny

## Trivia

* The Bomb rock texture for the Primitive Caves appears to have a small fossil resembling the mini-boss Wrath.
* The Large 2x2 sized rocks found in Dice Rooms and created by The D12 appear as monuments to the D100 item.