Inaccessible Rooms

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In *Undertale*'s game files, the player cannot access some rooms by conventional means. If the player attempts to access these inaccessible rooms (the "Dogcheck" rooms are 0-4, 239-263 and 265-335), the "Dogcheck" value will return out of range and cause the Annoying Dog to appear in the middle of a black screen while "Sigh of Dog" or "Dance of Dog" plays.

The rooms below are listed in numerical order.

## Room 123

**Room 123**, also known as **room\_water\_prebird**, is between room\_water\_farm and room\_water\_shop. Its name suggests that Toby Fox may have planned to place it before the Bird That Carries You Over A Disproportionately Small Gap. The room has a thin stretch of land surrounded by water on two sides. Grass covers the path, and the protagonist can talk to two NPCs hidden within it. One NPC remarks that they love to catch bugs in their spare time, and the other one asks the protagonist to do something about their friend, who the NPC says has a creepy smile. If the protagonist speaks to the second NPC again, the NPC asks where their friend went. Exiting the area on the left crashes the game, and exiting to the right softlocks the game at a black screen. This could be the bug catching spot Toriel mentions when you talk to her in her home.

### Complete NPC Dialogue

**[At the left end of the tall grass]**

* *(Whenever the girl moves her net, this bug scurries straight into it.)*
* *Excuse me... Yes, you, with the striped shirt.*
* *Can you do something about your friend...?*
* *Yes, your friend... The one behind you, with the creepy smile.*
* *Hmmm? Where'd your friend go?*

**[At the right end of tall grass]**

* *I'm catching bugs. But the underground doesn't have many...*
* *I keep catching the same one.*
* *Achoo! Tried to catch a bug, but I just caught a cold...*

## Room 264

**Room 264**, otherwise known as **room\_gaster**, is black and displays shaking, white text in a pixelated Wingdings font. A glitchy, robotic sound named mus\_smile plays in the background, and when sped up is revealed to be Muffet's laugh reversed then played twice. The text plays random snippets of abc\_123\_a.ogg every time a character is typed out. Once the message ends, the screen turns black for a moment before the game closes. Unlike the other rooms stated here, it is not Dogchecked.

### Translation of Wingdings Message

* *ENTRY NUMBER SEVENTEEN*
* *DARK DARKER YET DARKER*
* *THE DARKNESS KEEPS GROWING*
* *THE SHADOWS CUTTING DEEPER*
* *PHOTON READINGS NEGATIVE*
* *THIS NEXT EXPERIMENT SEEMS*
* *VERY*
* *VERY*
* *INTERESTING*
* *...*
* *WHAT DO YOU TWO THINK*

## Room 267

**Room 267**, also known as **room\_2**, displays three Froggit sprites before printing the screen red and loudly playing the enemy defeated sound. After a while, it will crash the game.

## Room 271

**Room 271**, also known as **TESTROOM**, is gray and has three text bubbles next to one another. Text within the dialogue boxes sways. "\* TestMonster and its cohorts draw near!" is displayed vertically beneath the second dialogue box.

### Dialogue Box Text

* "*La, la. Time to wake up and smell the pain.*"
* "*Though.... It's still a little shaky.*"
* "*fhuehfuehfuehfuheufhe*"

**(Vertical Text - Goes Offscreen)**

* "*TestMonster and its cohorts draw near!*"

No more text prints after the last dialogue.

In the *Undertale* Demo, this room replaces room 326 if the SAVE is invalid.

## Room 272

**Room 272**, also known as **room\_water\_redacted**, is black and has an NPC in the middle. As the protagonist approaches, the NPC fades and, when spoken to, says "\* [redacted]" in Wingdings. This NPC represents one of two theorized sprites for W. D. Gaster. "Premonition" plays in this room. If the protagonist leaves through the south exit, they enter the sound test room, room 270. One of the four playable songs in this room is "Gaster's Theme"; when the protagonist attempts to exit the room, the game crashes. If the protagonist chooses to play "Gaster's Theme," they can select no other song.

## Room 273

**Room 273**, also known as **room\_water13**, uses Waterfall sprites and has a long narrow pathway that leads to a large area of land covered in tall grass. The protagonist can find Bridge Seeds in the grass and can use these seeds to reach a pathway on the right side of the room. The exit here leads to room 274. Walking to the bottom crashes the game.

## Room 274

**Room 274**, also known as **room\_overworld**, is black with NPCs that appear to be lava streams with stoic faces, similar to the protagonist's expression, while Determination is playing. In the game files, these sprites are named "`spr_test_dt_0.`" Talking to these NPCs crashes the game, as it attempts to access a seemingly missing file named "testlines.txt." There are two dialogue triggers that the protagonist can activate: Toriel's and Flowey's. The Toriel dialogue is almost identical to her initial dialogue when the protagonist meets her in-game; the only differences are that "TORIEL" is in blue and "RUINS" is in red.

The Flowey dialogue triggers a battle with him, and dialogue from a Neutral Route ending loops while "Your Best Friend" blares. The game crashes if the protagonist attempts to exit the dialogue.

## Room 275

**Room 275**, also known as **room\_overworld3**, is mostly a black room.

## Room 276

**Room 276**, also known as **bullettest**, is a variant of the first Froggit you encounter with Toriel. If you do anything except kill, Toriel will appear and scare the Froggit away, then you return to the previous room (however, if you edited the save file then launched the game, there will be no previous room, so it will restart). The edges of the bullet box are missing with the SOUL stuck at the center of the screen with text saying "*\* Froggit attacks you!*" laid over it and red, triangular rays appear out of the SOUL, then sweep to the right side of the screen and turn green. The buttons usually at the bottom of the screen are replaced with rows of Photoshop Flowey's friendliness pellets coming out of the bottom of the screen and curving away from the SOUL.

## Room 277

**Room 277**, also known as **room\_water16A**, seems to be a black room. It was probably going to be a room for the Waterfall area.

## Room 287

**Room 287**, also known as **room\_spritecheck**, is gray and displays every single sprite in a rapid succession. After Undyne the Undying's head loads, the center-most sprite becomes a static sprite, though the others still cycle. There is also a 0 on the screen, and after all the sprites load, the 0 counts up. Pressing the space button in this room brings up the Joystick Config room.

## Room 296

**Room 296**, also known as **room\_fire4**, uses Hotland sprites and Waterfall floor sprites. It has a path that goes up and then turns right, and steam vents line the path. The protagonist can access these vents by walking through the wall. "Another Medium," a reoccurring song in Hotland, plays in this room. Going below sometimes loads room 294 (Photoshop Flowey's battle, which will crash the game), going right will also crash the game.

Sometimes, a dialogue box displays the *Undertale* prologue and activates a fleeable Mettaton battle.

## Room 297

**Room 297**, also known as **room\_fire10\_old**, uses Hotland sprites, and conveyor belts line a pathway that the protagonist must cross to get to the other side. If the protagonist falls off a conveyor belt, they will find themselves in room 298. The exits on the right and left of the room are nonfunctional.

## Room 298

**Room 298**, also known as **room\_fire10A\_old**, uses Hotland sprites and contains two platforms, one at each end of the room, that conveyor belts link. A single Echo Flower located in the middle of the room says "\* Error!" The left side of the room has a door that leads to room 297, and the other end of the room has a bowl of dog food. The protagonist can find the same bowl in Papyrus's shed.

## Room 299

**Room 299**, also known as **room\_tundra\_placeholder**, uses Snowdin sprites and consists of an ice puzzle. If the protagonist attempts the puzzle, the ice pushes the protagonist backward when touched. There is nothing located at the end of the puzzle, and this room does not connect to any other room.

## Room 300

**Room 300**, also known as **room\_ruins12B\_old**, uses Ruins sprites and is similar to room 13, the room where the protagonist can find Monster Candy. Instead of Monster Candy, this room has Rock Candy, and the protagonist can only hold one Rock Candy at a time; to take another, the protagonist needs to eat or drop the piece of Rock Candy that they currently have.

## Room 301

**Room 301**, also known as **room\_tundra\_rollsnow**, has a small snowball whose mechanics are similar to the Ball Game in Snowdin Forest. If the protagonist pushes the snowball, it gradually grows until it reaches maximum size. This room does not connect to any other rooms.

## Room 302

**Room 302**, also known as **room\_water7\_older**, uses Waterfall sprites, and the game will crash when entered unless the file "`obj_waterpushrockgen`" is edited or deleted. This room has a single Echo Flower that says "\* Error!" and several torch-like objects that may be placeholders due to their poor quality. The tops of these objects combust when the protagonist interacts with them. This room may represent an unfinished puzzle similar to the torch puzzles in *The Legend of Zelda*. Leaving this room crashes the game.

## Room 303

**Room 303**, also known as **room\_meetundyne\_old**, is an old version of the room where the protagonist initially meets Undyne. There are some NPCs and a sign that functions as an Echo Flower; it reiterates the last line of dialogue that the protagonist heard from the NPCs. This room also has the scene in which Papyrus talks to Undyne and uses the same dialogue as the final version of the room. After Papyrus talks to Undyne, Monster Kid's dialogue displays even though they are not visible in the room. The right exit leads to room 304.

### NPCs Dialogue

**[When interacting with rabbit-like NPC]**

* "*We're about to visit Snowdin for the first time.*"
* "*You just came from there, right?*"
* "*How is it...?*"
* "*You should go back to Snowdin.*" **[After Undyne's dialogue]**

**[When interacting with other NPC]**

* "*I... I don't know you.*"

## Room 304

**Room 304**, also known as **room\_water\_mushroom**, has an NPC that asks the protagonist what the "outside" is like. The NPC then asks the protagonist to investigate the room to the right (room 305) and return to tell him what they found. His dialogue is similar to Ragel's; he talks about being unable to explore because he is rooted to the ground. The NPC looks similar to the Ficus Licker. The bottom exit connects to room 303, the right exit connects to room 305.

### NPC Dialogue and Crystal Flavor Text

**[When interacting with a crystal]**

* "*It's a crystal. You've never seen one like this before.*"

**[When interacting with the NPC in the room]**

* "*You... You came from outside, didn't you?*"
* "*People like you are so rare...*"
* "*Please! Stranger!*"
* "*Is everyone out there like you? How terrible*"
* "*Huh? "SURFACE"? What do you mean?*"
* "*I just meant outside this room.*"
* "*If you haven't noticed, my mycelium have bound me to the ground*"
* "*Please! Stranger!*"
* "*I'll make this simple.*"
* "*I've spent my whole life in the same spot, in the same room.*"
* "*But I've long wondered what lies inside the room to the right.*"
* "*Long I've fantasized about entering, and changing my scenery.*"
* "*No... Changing my LIFE!*"
* "*Please. Go and tell me what's inside.*"
* "*Well, what are you waiting for?*"

## Room 305

**Room 305**, also known as **room\_monsteralign\_test**, is black and has a Memoryhead that disappears.

## Room 306

**Room 306**, also known as **room\_battle**, is the battle room. While the battle scene is used in-game, this room does not contain a monster because it lacks data for it and is not accessed by the game normally.

## Room 321

**Room 321**, also known as **room\_empty**, is a black room.

## Room 326

**Room 326**, also known as **room\_of\_dog**, is the Annoying Dog error room if the SAVE is invalid. The unused soundtrack mus sigh of dog or mus dance of dog plays in this room.

In the *Undertale* Demo, room 271 replaces this room.

## Room 327

**Room 327**, also known as **room\_quizholder**, is a black screen with Mettaton and Alphys, as seen in Mettaton's quiz show. Mettaton waves while Alphys looks on nervously. The player can do nothing in this room.

## Room 328

**Room 328**, also known as **room\_friendtest**, is gray and was used to test the scene before the Asriel Dreemurr battle in the True Pacifist Route. It includes the final dialogues and battle sprites of all characters. Random sprites flash and scroll during the scene, including the sepia Asriel images Temmie Chang created. The game crashes after Flowey delivers the line "I'll keep you here no matter what!"

## Room 329

**Room 329**, also known as **room\_bringitinguys**, is black and was used to test the scene before Asriel's battle where the monsters encourage the protagonist to keep fighting. It includes the final dialogues and battle sprites of all monsters that enter during this scene; the main cast is absent. The game does not progress further than this scene.

## Room 333

**Room 333**, also known as **room\_asrieltest**, is black and was used to test Asriel Dreemurr's "God of Hyperdeath" animation. The SOUL is a placeholder sprite and there is no bullet board; the SOUL can move freely around and behind Asriel's battle sprite.

Asriel floats up and down as he does in-game, and he indefinitely shakes his head. After a few minutes, Asriel moves from side to side in an arc pattern as his rainbow sprites display.

Attempting to make Asriel attack via Debug Mode will crash the game.

## Room 334

**Room 334**, also known as **room\_afinaltest**, was used to test Asriel Dreemurr's "Angel of Death" animation. The SOUL is the same placeholder sprite seen in room 333. The SOUL can move freely around the screen and is always in the foreground.

## Room 335

**Room 335** has varying results based on the game version:

* On versions of the game up until v1.05, it is supposed to load the name screen. However, it will crash the game when loaded.
* In the PlayStation version and versions after v1.05, it leads to the Dog Shrine.