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mus_mt_yeah.ogg is not an unused sound

This soundclip plays during the completion of Mettaton's coloured tile puzzle (which is not required by the game to complete, but still possible to do so) before reaching MTT Resort in the game. Here is a video of someone completing the puzzle in-game where the sound is played when the player steps on the green tiles nearer the end of the puzzle (close to and at the 'S' line of green tiles at the very end (timestamp in the video 0:30 - 0:50), where the sound plays instead of the regular 'ding' sound played when passing over the green tiles) --Paynoattentiontome (talk) 19:21, 30 November 2015 (EST)

Okay, thank you! I removed it. Robotortoise (talk) 21:31, 30 November 2015 (EST)
It's also in the Mettaton EX boss fight when you use FIGHT on him. The preceding unsigned comment was added by Nightmarefredbear2017 (talk • contribs)
It sounds like a voice clip from Captain Falcon or Ganondorf in Super Smash Bros. Ultimate Bdmcgaming (talk) 14:12, 6 February 2021 (EST)


Is this ever used? --357A (talk) 15:53, 10 October 2015 (EDT)

don't think so, but it's a jab at dumpers and code lookers Thecharrr (talk) 14:46, 11 October 2015 (EDT)
Someone somewhere was saying Gaster's speech sound is abc_123_a.ogg slowed down a ton, so it'd be used if that's true, to the extent that you can call the Gaster conversation(s) you can only get to by editing your save file "used". --Rapstah (talk) 18:11, 2 November 2015 (EST)
Gaster events are available in the latest patch, they weren't before due to a typo --Ariscop (talk) 18:24, 9 February 2016 (EST)

More Unused Text

Digging around data.win, I found the string "scr_itemnamelist 3 * If you are reading this,& I messed up somehow./% M" at line 20758 in Notepad++. I doubt this is used and there's probably more. I made a text file for a good chunk of readable stings from data.win for anyone who wants it: http://www.mediafire.com/view/4byvqpurcxq75z7/Undertale_Readable_Strings.txt . --357A (talk) 13:19, 16 October 2015 (EDT)


Should all of the Gaster-related nonsense go in its own section, or should it just be split up into the different rooms and Fun levels he's associated with? --AquaBat (talk) 00:02, 20 October 2015 (EDT)

Admittedly, it depends on if we should explain gaster on this page or just detail what's unused/rarely happens. I personally think it would be better to just list what's unused and let the reader piece it together since I'm not sure if we can really qualify gaster himself as "unused". There's a bunch of other unused rooms/monsters/dev text in the code anyway so at the least we could put the stuff related to fun under its own category as they're rare or possibly dummied out events. There's a decent info dump here: rawr.ws/undertale Zerovii (talk) 09:27, 20 October 2015 (EDT)
I suspect Undertale will be getting futures updates to either expand hard mode and/or develop on the mysteries of the game. The reason the game dosen't have much on Gaster right now might just be very well that Toby Fox is aware that people tend to unearth it quickly anyway, and just decided to put it gradually over time, maybe as people find the proper track of triggering things. Some of the "unused" things like the sound test with the weird music seems to be even for people like us to find as it dosen't consist out of content to be fit in the game at all. Ailure (talk) 04:40, 6 November 2015 (EST)
Created this, dunno if you typical curators want it as just screenshots or as a GIF so I'll leave it here for anyone to figure out. https://tcrf.net/File:Undertale_Gaster_Text.gif --Sonicandtails (talk) 19:20, 14 November 2015 (EST)
Gaster really should be discussed at length in this article, since all things directly related to him indeed were originally unused, but also because Gaster is actually meant to be a *deconstruction* of unused videogame content.Skadooshbag (talk) 21:00, 18 October 2018 (EDT)


Hey, I had a look at what's in the demo. The demo was made in Game Maker 8.0, so it's way easier to crack it open and look at the data and scripts. The demo is mostly stripped clean of stuff that doesn't appear in it, with the exception of some basic test rooms including bullettest, the "overworld" maps, the "TESTROOM" map where the "wake up and smell the pain" string appears and a couple more. These seem to be identical to the maps in the final game based on the map dump on Reddit.

There's a Korean demo and I decided to have a look at it too to see if there are differences, and it turns out there are! It seems like Toby added an extra room with a script to play dialogue out of a text file so the translator could test Korean strings without having to re-compile the game, and some other content that isn't in the English demo is there too; this includes full Sans and Papyrus sprites, including the shaded black Sans from the forest section right after the demo ends, and more interestingly, scripts, sprites and sound for "punch" attacks that I don't think appear in the final game at all.

These "punch" attacks seem like they would appear in a battle, but the actual battle where they would appear isn't in the game, unlike the "doge B" battle that is unised in both the normal demo and the final game.

There's also a list of phone contacts in a setup file; this seems to have been included by accident because there are no other references to Alphys and Undyne (spelled "Undine" in this file) in the demos:

global.phone[0]=0 // papyrus

global.phone[1]=0 // undine

global.phone[2]=0 // mettaton

global.phone[3]=0 // sans

global.phone[4]=0 // dralphys

global.phone[5]=0 // other




//0 --> nobody

//1 --> torielHello

//2 --> torielPuzzleHelp

//3 --> torielAboutYou

//4 --> torielMom...

//5 --> torielFlirt

//6 --> Papyrus

//7 --> Sans1 (prank number 1)

//8 --> Sans2 (prank number 2)

//9 --> Sans3 (prank number 3)

//10 --> GrandpaSemi (Hello... id like a large pepperoni pizza...)

//11 --> DrAlphys

//12 --> Undine

//13 --> Mettaton

I don't remember any Sans prank calls in the final game, and in the final game, I'm pretty sure the pizza phone call is from Alphys and not some strange "Grandpa Semi" character? There are no strings for these calls though, so we can't really know what the game was like at this point.
There actually is a sans prank call in the final game. It's a take on the "Refrigerator is running" call. --Polocatfan (talk) 18:26, 21 May 2016 (EDT)

Couldn't really find a lot of other unused stuff in the demos, if someone wants to have a look then there could be more stuff in there. The final game probably has way more unused stuff. --Rapstah (talk) 04:51, 21 October 2015 (EDT)

Punch attacks are done with the tough glove equipped, and while not directly implied the pepperoni pizza prank call does seem to be alphys.
Oddly to my knowledge there's only one sans prank call in the final, which is the refrigerator running joke. There's no mention of the wrong number call unless it's one of sans's pranks as well.
Can you actually call mettaton in the final? Interesting find here for sure.. Zerovii (talk) 08:13, 21 October 2015 (EDT)
I didn't know about the Tough Glove, does it appear in the demo? It's possible the scripts and sprites were there in the English demo too and in another order and it tricked me.
I don't think you ever speak to Mettaton on the phone in the final game? I'm not even sure what the comments are supposed to mean though. If it's supposed to be a list of phone conversations then it was clearly written before being able to call Sans from everywhere was a thing, and then it makes sense that the other characters are there too just for reference.
Weird discovery: just like there are sans-serif fonts, there are semi-serif fonts. If this means Semi is another skeleton character that was cut or eventually turned into Gaster, then this is probably the most stupid way to find out Gaster is Sans's grandfather. This is baseless enough that I guess it shouldn't be in the article though.
I've never finished the demo, do Sans and Papyrus show up at the end in person or just as dialogue faces? If they show up as sprites then the sprites I found might not be unused in the Korean version, it could just be another case of them being in another order. --Rapstah (talk) 10:30, 21 October 2015 (EDT)
Mettaton EX talks to you in a neutral ending if he's the only important character you didn't kill. "Grandpa Semi" is likely just nonsense. Sans and Papyrus don't show up in person and the Tough Glove doesn't exist in the demo but I'm pretty sure that things that are not used in the demo but seen as is in the final game don't need to be covered. --AquaBat (talk) 11:51, 21 October 2015 (EDT)
Is it possible to rip the raw text out of the demo somehow? I am curious about the sans prank calls at least.
You're right, I forgot the demo was only the ruins, where you would likely only get the toy knife. At most we could compare it to the final punch graphic to see if it is any different and throw up a comparison, same with the rest of the demo sprites.Zerovii (talk) 15:32, 21 October 2015 (EDT)
iirc from my time poking the demo, only the comments for that exist, there is no actual phone call text. there is otherwise unused text in there, though --Xk-sig.png Xkeeper (talk) 15:38, 21 October 2015 (EDT)
To continue the discussion on Grandpa Semi, there's apparently a soundfile in the demo called "grandpasemi.ogg".--Chpexo-sig.pngChpexo 15:19, 25 October 2015 (EDT)
grandpasemi.ogg seems to be a variation of the opening to Metal Crusher, Mettaton's theme. Nice find. --Rapstah (talk) 07:22, 28 October 2015 (EDT)

MTT News

In the part where Mettaton is doing his news show, the stage backdrop has a night time city skyline on it and nothing else. However, when the stage collapses, you can briefly see a big yellow "MTT NEWS" sign falling behind the other backdrop panels. Based on its position, it looks like it was affixed to the top center. Is this worth mentioning?

Also, the green beams above the backdrop have lights hanging from them, but the are hidden behind the backdrop panels until it collapses. I figure this could either be a mistake or an intentional extra detail. --Peardian (talk) 17:50, 25 October 2015 (EDT)

Unused Enemy/Earlier Sprite

I was looking over the sprites and found this in the game which I don't think is used at all. The sprite name is Doge and comes with 3 duplicate images and a damage sprite. There is also an unused enemy in the demo that lets you fight a Doge enemy albeat with a different sprite (Which is an earlier version of the Lesser Dog). I don't know if the two are connected in any sort of way. Early "Doge" Sprite Unused Doge battle in the demo The preceding unsigned comment was added by DigDackBick (talk • contribs)

On a side note, there apparently is a file called "14_old" in the "monsters" folder. I deleted it and the folder it self and doesn't seem to affect the game at all. Any reason why it's there?--Chpexo-sig.pngChpexo 16:55, 28 October 2015 (EDT)
Like the file said, probably because it was old. But anyway I have found some interesting stuff, I found dupes of the dog images all called spr_testimage, my guess it that they were used to test animations since playing them together makes the dog blink. Link to them is here. There also exists this weird test sprite, this does appear in a test map. Also I believe that these faces are never seen in game. --DigDackBick (talk) 17:51, 28 October 2015 (EDT)

Soundtrack Differences

Since I'm too busy (or others could call it lazy) to cover some stuff, I'll tell you what I have found. There are apparently differences between the OST in the files and the OST on the bandcamp website. According to my notes, "Start Menu" is longer on the site and "Fallen Down" is at a different pitch. Also I cannot find the theme "Empty House" in the files. There is track that's called "grandpasemi.ogg" that I discussed above. In addition, there's a short loop that I don't know what it's for but seems foreboding and fast paced. There are alternates of the Start Menu theme that are unused in the demo but unused in the final.--Chpexo-sig.pngChpexo 17:16, 28 October 2015 (EDT)

"His Theme" is also sped up on the soundtrack. To be precise, it's 15% faster than the in-game version. Related, in the sfx folder that the Underminers ripped, there's a set of WAV files called 00002a56, 00002a57, and 00002a58 that seem kind of odd to me, and I know I never heard them when I was playing. Can anyone else confirm whether or not they're used? -- Harmony (talk) 12:10, 9 November 2015 (EST)
I can't tell you if the sfx files are used or not because those aren't file names, those are hex values. Can you list the file sizes for each, down to the byte? I can find them that way. Robotortoise (talk) 13:42, 9 November 2015 (EST)
If you go to rawr.ws/undertale, you can download all the sfx and they will be labeled like Harmony said. Anyways, I personally can't tell where they are used. In order, it sounds like someone (perhaps Omega Flowey? Sounds like how his soundclips are distorted) saying "-I!" (or "Aiye!"/"Hi!"?), "Careful!", and "Hey!". I remember Omega Flowey in the final phase using more sounds when he gets hit, so the sounds he used could be just sped up/slowed down versions of these three. The fact that 00002a58-00002a5f (plus 00002a53) all relate to Omega Flowey personally confirms that these are likely meant for or somehow used in the fight. --Kayya (talk) 19:09, 9 November 2015 (EST)

Unused Omega Flowey Sprites(IGNORE THIS)

When you look through all of Omega Flowey's sprites, you can find some odd mouth sprites that look like they would've been used for the fight, BUT aren't used where in the fight. They're obviously meant for the fight, as they are some of the hyper-realistic sprites used in the fight, but, again, the creepy smiles are never seen in-game. This may hint at something else for the fight that would've made it somewhat different. BTW, is mus_battle2.ogg ever used in-game? I ask because I don't recognize it being in the game at all. The preceding unsigned comment was added by MegaMCAlly (talk • contribs)

mus_battle2.ogg is "Stronger Monsters", used in Hard Mode. What's the filenames for the unused Omega Flowey sprites? The preceding unsigned comment was added by Lilfut (talk • contribs)
Dunno actually what the file names are i will check and thanks for info on that song too--MegaMCAlly (talk) 22:55, 4 November 2015 (EST)
OH WAIT THEY ARE USED I AM SO SORRY! They were hard to actually notice in-game, so my mistake...The preceding unsigned comment was added by MegaMCAlly (talk • contribs)

More Stuff

http://undertale.rawr.ws/ has basically all of the data on Undertale, including a full strings list.
I'll try and add stuff from it to here gradually, but we're probably going to need a subpage for unused text. NO BOOT DEVICE (talk) 06:22, 6 November 2015 (EST)

Odd music names

There are some odd file names in the ogg files used ingame. For instance, there is "mus_woofenstein", which is obviously a pun on the game "wolfenstein". The music used for when Sans dines with you is called "mus_sansdate", possibly implying he would have gone on a "date" with the player like Papyrus does. "mus_spoopy" is the name of the Ghost house music, based off an the "spoopy" internet meme. It is also used in "mus_spoopy_holiday" and "mus_spoopy_wave".

Are the puns and the like interesting enough to note on the wiki?

Oh, and one of the most bizarre filenames is "mus_hotel_battle". I can't find any information on a battle in the hotel and it appears to be a remix of the hotel music. Where is this used?! Robotortoise (talk) 04:39, 8 November 2015 (EST)

"mus_hotel_battle" is used during the minigame where your phone turns into a jetpack and you have to fly upwards to grab the can of "human soul substitute". If we're talking weird filenames, then what about "mus_muscle" being San's theme/the song that plays in Papyrus' and Sans' house? --Kayya (talk) 13:03, 8 November 2015 (EST)
Goofy filenames based on puns or memes aren't really worth mentioning in the article, no. As for "mus_sansdate", you go out to dinner with him, which could be interpreted as a "date". It doesn't necessarily mean you were supposed to go through an actual dating minigame with him. Toby's a weird dude and I wouldn't think too hard about most of the names he gave his files. --BMF54123 (talk) 17:26, 8 November 2015 (EST)
Okay, thanks for the clarification.Robotortoise (talk) 01:38, 9 November 2015 (EST)
Actually, I think we should at least bring up "mus_hotel_battle" as it seems to hint at something else that was once within the game. What do you think?--MegaMCAlly (talk) 20:31, 10 November 2015 (EST)
Definitely. It's also listed on the soundtrack as "Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything". Which would make sense, as it's a remix of the hotel theme. But it's not, ya know, IN THE HOTEL. Which is certainly odd. I'll add it. Robotortoise (talk) 21:06, 10 November 2015 (EST)
It's a variation of the hotel theme, except the hotel theme is also the Mettaton cooking show theme, which is where mus_hotel_battle is used. I'm pretty sure the filename is supposed to just be a reference to the other version of the song, not the actual hotel in the game. --Devin (talk) 19:08, 21 November 2015 (EST)

Errors in Robotortoise's Recent Uploads?

Recently Robotortoise uploaded a handful of images to the wiki and they appear to have glaring issues I feel need to be addressed. Two rows on the left appear to be switched with two rows on the right and two columns on the top are switched with two columns on the bottom. These are the images in question: File:Undertale_concept_art_1.png




It's important to note that the rip for the flowey boss does not have this on the reddit thread. Are they supposed to be like this or is this an error on Robotortoise's part? —Chpexo-sig.pngChpexo 20:56, 9 November 2015 (EST)

Hm, I'm not quite sure, to be honest. I ripped mine from the PNGs extracted from the game. I extracted them using X-Ripper and then cropped them to the sprite size in GIMP. It's possible I messed something up. Robotortoise (talk) 20:59, 9 November 2015 (EST)
If you want to be sure, rip an image that you already know what it looks like in the game and compare the rip with the in-game graphic; however, from the evidence I'm given, it seems to be an issue with the ripper since the reddit image just crops the image to remove the stray pixels. —Chpexo-sig.pngChpexo 21:24, 9 November 2015 (EST)
I looked into this, and you screwed up the rips. Two pixels from the rip are added extra to each side of the image; the pixels are from the opposite side of the image. So whatever method you are ripping these rips from needs to be fixed or replaced. —Chpexo-sig.pngChpexo 23:34, 10 November 2015 (EST)
Replaced them with my personal rips. --Sonicandtails (talk) 18:14, 14 November 2015 (EST)
I was hoping Robotortoise would take responsibility and fix it himself but thanks anyway. By the way, you forgot to remove the {{replaceimage}} template for the images. —Chpexo-sig.pngChpexo 19:59, 14 November 2015 (EST)
Sorry, I was busy. And plus, I didn't know how to fix it if they were ripped incorr-....
Wait, you say they were STRAY pixels? As in, EXTRA pixels?
.....Well I'm stupid. That was just a cropping error, then. The sprites are all in giant sheets internally, they're not separated. Guess I'll have to be more careful when cropping next time, thanks! Robotortoise (talk) 23:30, 15 November 2015 (EST)
The issue with the swapped columns/rows appears to be simply how they're stored in the sheets. -Einstein95 (talk) 15:54, 16 November 2015 (EST)

"Unused" flag + more

A while ago, I was messing around with the flags in the "file0" file. By changing 0 to 1 on line 59, you activate a very small portion of debug mode: the ability to hold down C to speed through text. As far as I know, this is limited to simply manually turning it on. Is it worth mentioning here? Speaking of messing with file0, by giving myself the locket before Waterfall Papyrus asked me if I was wearing a "bepis.", which is an error message since you're wearing something other than the bandage, the mandanna, or the dusty tutu. Should that also be included? And, one more thing... Does Asriel walk in-game? There's files for him walking up, down, left, and right. I haven't seen the true ending enough to remember if he walks all of those directions. --Kayya (talk) 09:31, 20 November 2015 (EST)

Lab Still Image On Windows

Somehow, while I was changing the room I spawn in, I went into Alphys's lab, and all of a sudden, the screen switches to the still image from the OS X version. I have no idea what caused that since all I did was change the room I spawned in.--MegaMCAlly (talk) 23:56, 20 November 2015 (EST)

Maybe it's simply a duplicate copy of the room with the 2D screen? What room did you set it to? Robotortoise (talk) 01:50, 21 November 2015 (EST)
All I did was skip to Hotland and when I walked into the lab, at first the screen was normal, but then the screen randomly switched from the one that follows you to the still image. So it isn't a duplicate room. I really don't understand why the game changed the screen while I was in there. I even WATCHED the screen as it went from the normal one to the still image.


Does anyone else think that Flowey isn't saying "J" or "K", but "Dang"? The preceding unsigned comment was added by NessPLAYS the Unused. (talk • contribs)

We don't know WHAT he's saying. He could be saying "Pan" for all we know. Robotortoise (talk) 16:55, 23 November 2015 (EST)

He is roughly saying "Jafe!", which is a strange profanity meaning "dumb female". Where this would be used is unknown, but my guess is that this originally be used when killing one monster(more likely Toriel) in a Genocide run, but this is unlikely. "Sandwich is Bunboon! 20:55, 14 December 2015 (EST)"


Is this just not a pitched up version of Omega Flowey's scream once he starts going into critical HP? https://youtu.be/RJ4kumxv_1k?t=549 --Kakarookee (talk) 20:50, 22 November 2015 (EST)

Dating Artifacts

There are string entries for various "dates". Sans' "date" is used when you go with him to Grillby's.

  • obj_napstablookdate
  • obj_undynedate
  • obj_sansdate3

There are also entries for adate and papdate which obviously stand for "Papyrus date" and "Alphys date" which are both used.

What about Undyne and Napstablook, though? You "hang out" with both, but in the kickstarter page it said "- Hilariously bad dating sim segments! - Seriously, you can literally have a robot husband."

I'm thinking these dating elements may be left over from the kickstarter. Sure, Toby could have also used the word "date" a synonym for "hang out", but the triggers

  • obj_napstablookfriendtrigger
  • obj_napstablook_actor
  • obj_napstablookdate

make me think otherwise. Are there more "dating" references? Robotortoise (talk) 16:55, 23 November 2015 (EST)

I'm pretty sure the Undyne "date" refers to when you hang out with her. As for Napstablook, I'm not sure... maybe it's for when you lay on the floor together? I imagine the "friend" trigger is related to when you receive the friend request from Napstablook in Hotland. --Peardian (talk) 19:03, 24 November 2015 (EST)
Oh yeah! I forgot about the friend request thingy! Yeah, that must be what it stands for. Robotortoise (talk) 02:25, 25 November 2015 (EST)

Unused(?) Pacifist Final Boss Text?

This has sorta been bugging me for a while now. In the game's text dump, at line 4582 (according to Notepad++), there's this line:

* ASRIEL's SOUL was awakened&  by the power of your&  friends!

I've seen some people say it's used randomly during the final boss itself, but I haven't seen any screenshots or video to confirm it. Would anyone happen to know if it's used, and if so, what exactly triggers it? Thanks. --KyuuGryphon (talk) 23:05, 1 December 2015 (EST)

KARMA Mention?

Located within the middle of the flavour text for the Sans fight are two lines:

10147: * KARMA coursing through your&  veins.
10148: * Doomed to death of KARMA!

I've personally never seen these in-game. However, within the sprites, there is text in the font of LV/HP in battles labeled KR. Some videos show this graphic positioned to the very right of the health bar. I think this flavour text mentioning KARMA and the graphic showing KR are related. Is this used and just hard to get or what?The preceding unsigned comment was added by Kayya (talk • contribs)

I suspect they might be used if you "Check" Sans after a certain amount of the battle has elapsed (possibly after he pretends to spare you), but I've never actually been inclined to try doing that. --Devin (talk) 11:32, 2 December 2015 (EST)
So I just did that. I only ever received the first message, however. Even when I was at 1 HP after a round, I only got the "sins crawling on your back" message. Would the latter message thus count as unused? --Kayya (talk) 18:06, 2 December 2015 (EST)
I guess it can be listed as unused until proven otherwise, then. --Devin (talk) 18:19, 2 December 2015 (EST)

I found the Soundtest room, and some other stuff (I pray that the soundtest isn't already up)

this.The preceding unsigned comment was added by Craftersshaft (talk • contribs)

So Sorry

Even though it's not technically unused, would the "So Sorry" enemy encounter and room be worth noting since it requires extremely specific circumstances to activate? --Peacock Roy (talk) 22:12, 14 December 2015 (EST)

It's pretty well-known by now, so not really --Xk-sig.png Xkeeper (talk) 10:48, 15 December 2015 (EST)

UNDERTALE: The Musical Dancing?

I was looking through the script to find the opera lines and found a series of very interesting lines, right after "OH? THAT HUMAN...":

14030: (Hmmm? Getting creative?)
14031: sting
14032: (Dance with me, darling.)
14033: (Oh! The audience can feel#your passion!)
14034: (Show the audience#your passion!)
14035: (So close... How passionate...)
14036: (... do you need some help?)
14037: (... what ARE you doing?)
14038: (Don't stop now!)
14039: (Look at you, leaping around#the stage...)
14040: (Can't keep your hands off, huh?)
14041: (Is that how humans dance?)
14042: (Humans are stranger#than I thought.)
14043: (Oh! They're really#getting into it.)
14044: (Moving so far...)
14045: (Who can blame you?)
14046: (Hmmm, I'll have to get used#to it...)
14047: (Even better than#I thought...)
14048: (So that's wha #it's like.)
14049: (Dancing with... A human.)
14050: (What a shame...)

This suggests that you can dance, though as far as I know that's impossible. The lines are done in a way suggesting they wouldn't be in a normal textbox at all, plus they're in lowercase. Mettaton ALWAYS speaks in uppercase. Line 14048 has a small typo, too. Does anyone remember if these are used ingame? --Kayya (talk) 02:15, 23 December 2015 (EST)

W.D. Gaster stuff

Why did no one posted Gaster stuff in there yet? There's the mystery door, the room behind it, the mysterious man (probably Gaster), Gaster's followers and goner kid... Why are these not yet there? --Metalex123 (talk) 23:54, 9 January 2016 (EST)

Probably because that stuff is not really unused. Even though most of it was uncovered by data miners manipulating save files and stuff, all of those things are accessible though normal gameplay under specific conditions. The conditions are not so obscure that they could only be discovered with a guide, either, but something that can occur from playing the game normally. --Peardian (talk) 14:16, 10 January 2016 (EST)
Whaaaaaaaaaaaat??? You can actually meet Gaster, his followers and goner kid???? How can we do that legit? --Metalex123 (talk) 22:49, 11 January 2016 (EST)
I've read that after defeating Sans, the Fun value is capitalized and set to 66, which is the condition for Room 268, room_water_fakehallway to appear. room_water_fakehallway leads to room_mysteryman which leads to the music test. Someone who can survive having a bad time can confirm or deny the fun changes, and if the capitalized Fun survives a reset but randomizes the number, potentially allowing for the followers and goner kid to appear.--Orange Fluffy Sheep (talk) 21:10, 12 January 2016 (EST)
Oh well, I'll... maybe try? Not really sure if I'd survive agains't Sans though... --Metalex123 (talk) 23:09, 12 January 2016 (EST)
I found a list of fun even flags and their triggers. Fakehallway resets fun to 0 after you enter it as does soundtest, can't confirm the sans fight setting anything but I didn't try backtracking. I was itching to do another run anyway to poke around so I may try it. http://undertale.rawr.ws/fun Zerovii (talk) 09:11, 13 January 2016 (EST)
False. This comment is by someone who disassembled the code (but isn't releasing the full thing out of respect for Toby), so it's likely trustworthy. --Lilfut (talk) 19:38, 13 January 2016 (EST)
I just defeated Sans, I backtracked to see anything related to Gaster and guess what? I found absolutely nothing! Well except the Riverman saying "Beware of the man who speaks in hands", but that's normal. I feel sad now knowing I did a genocide run for nothing... --Metalex123 (talk) 23:06, 18 January 2016 (EST)
Seeing those things requires you to have a specific Fun value, right? Even if you did beat Sans, there's only a 1-10% chance that you'll be able to see the specific event you're after. --Peardian (talk) 23:58, 18 January 2016 (EST)
So, even though my initial statement was based on wrong information... the new update patch they released fixes the "fun" thing, so now all of the Gaster stuff really can happen normally, no genocide required. --Peardian (talk) 20:41, 22 January 2016 (EST)
Gaster really should be discussed at length in this article, since all things directly related to him indeed were originally unused, but also because Gaster is actually meant to be a *deconstruction* of unused videogame content.Skadooshbag (talk) 20:59, 18 October 2018 (EDT)

How would you go about extracting files to view data.win's files?

Delete this if it isn't topic worthy but I would like to contribute to this article but can't seem to get the game's files to be viewable. I've tried using Gamemaker, extracting data.win via QuickBMS, but when I do every file is in the "file" format. I would like to know how you guys actually extract the game's files to search for unused things in the game so I could contribute. --Cubethepenguin (talk) 16:27, 14 January 2016 (EST)

Other unused stuff not here

So yeah, like I said before, I find it strange that the Gaster stuff is not there, but apparently you can meet him after beating Sans in a genocide run, then backtracking... Not sure if it's true, though... But I also notice that Song That Might Play When You Fight Sans is not here either (the actual song that plays when you fight Sans is Megalovania). --Metalex123 (talk) 23:12, 14 January 2016 (EST)

I believe you're looking for this subpage. Song That Might Play When You Fight Sans doesn't exist in the game's files, it was included in the soundtrack as a red herring. --AquaBat (talk) 00:01, 15 January 2016 (EST)
Nope, I'm talking about the room in Waterfall with the grey door that leads to the room with "Gaster"... Still trying the genocide run... but Undyne's hard... --Metalex123 (talk) 22:05, 17 January 2016 (EST)
I know this is pretty old at this point, but you can encounter Gaster and his followers if a certain value in the game's code known as a 'Fun' value is set to 66, which can happen at any point in the game, which means it isn't unused. And i'm pretty sure that it's been disconfirmed that you'll always find Gaster after beating Sans. The Gaster stuff used to be unused because of a typo in the game's files, but that's been fixed in the latest patch so that it works properly.--Mephes1 (talk) 15:49, 16 April 2016 (EDT)Mephes1

Patch differences

The new Undertale patch has some differences in unused content. In particular, the "please don't rip sprites" message has been replaced with this: http://skrillex.zone/post/137691699959 --FSX (talk) 14:16, 20 January 2016 (EST)

Found a possible line of text leading to the discovery of Gaster's Battle?

While snooping through the scripts.txt of the game, I found a line of text that interested me very much. It was in the section where all the enemy/boss names are, and the final line of code in this section is "Gaster". This I believe was not here until the latest patch, did I just find out Gaster has a battle? --Cubethepenguin (talk) 21:54, 24 January 2016 (EST)

It's been discovered before this patch. This string was included in Undertale's to-do page and explains his name is just an entry. --Kayya (talk) 22:34, 24 January 2016 (EST)

Deleted rooms?

room 97 and room 130 both have what i assume is collision sitting out of bounds, looks like a path or room was removed from them?--Ariscop (talk) 03:38, 3 February 2016 (EST)

Wow, interesting. The first room actually has an event located where the path once was. Going there takes you to the room with the bird that carries you over a disproportionately large gap. --Kayya (talk) 15:07, 3 February 2016 (EST)
I want to guess that the path at the end of room 130 would have originally been how you exited the room after encountering Undyne (instead of the path appearing to the north). I think it may have gone directly to room 132 based on how it's oriented, then eventually redesigned (to add the Echo Flower and some other bits of dramatic pacing). --Devin (talk) 15:23, 3 February 2016 (EST)

Omega Flowey and Empty File

Seen here, it's an alternate dialogue for Omega Flowey Intro with a empty file. It whould be worth being mentioned?

--SimisageJittens (talk) 23:40, 23 February 2016 (EST)

This is not unused. You can legitimately beat Undertale without saving once.
--Polocatfan (talk) 18:20, 21 May 2016 (EDT)

mus_sfx_voice_jafe is not an unused sound

After watching some UT videos, I heard something familar, which was in fact the sound I previously thought (and the page too thinks) to be unused. The sound is actually used in the (spoilers) final fight of the True Pacifist ending (Example Video, skip to 5:50 for example of the sound usage), where it's used as the attack sound for a particular attack. --Paynoattentiontome (talk) 19:26, 12 April 2016 (EDT)

I don't hear it. Which part of which attack is the noise used in? --billybobfred (talk) 21:24, 15 April 2016 (EDT)
It sounds like it could be part of when the sword swinging sound, combined with another sound at the end of the swing. Determining whether or not this is the same sound being used will require some digging. --Peardian (talk) 02:31, 16 April 2016 (EDT)
This. I know this is an old talk post but i wanna mention it because its kinda glaring that its been on the page so long when it's most likely used. As Peardian said, it can be heard at the sword swinging attack in the last pascifist fight. --Cinnaplum (talk) 21:19, 22 October 2018 (EDT)
I've listened to the linked video repeatedly. I absolutely do not hear the "jafe" sound in that attack at all. I don't even hear a sound that can reasonably be mistaken for it. Can people who know how to datamine figure out which sounds are used there and answer this once and for all? --wingedcatgirl (talk) 04:26, 14 July 2020 (UTC)

Part of Chara jumpscare sound missing?

I heard the sound in another Undertale corruption video and about a second of it seems to cut off at the end. Compare the two: around 1:20:30 and at around 2:20 SodaDog (talk) 10:14, 3 May 2016 (EDT)

The sound loops in the genocide ending. -- ManDude (talk) 13:43, 3 May 2016 (EDT)


found this in the game files,dont remember hearing it in the game does this play during one of the gaster events,or is it completely unused?Frozenburg (talk) 12:21, 25 May 2016 (EDT)

It's played during Gaster's "entry #17": https://www.youtube.com/watch?v=fpneLl7ohUs --Devin (talk) 12:26, 25 May 2016 (EDT)

"Doomed to death of KARMA" is not an unused line, apparently

Turns out that the generic flavor text lines in the Sans fight ("You felt your sins crawling on your back", etc) are chosen based on how much KR you have at the beginning of the turn. Since KR also drains faster the more of it you have, it's very difficult to end Sans's turn with enough to trigger this message. --billybobfred (talk) 14:02, 29 August 2016 (EDT)

Unused songs put on the Undertale Tumblr

Should we add these? I was wondering because they're not in the actual game, but went unused nonetheless. --Epicjubjub (talk) 17:07, 14 September 2016 (EDT)

Put the unused songs from the Tumblr account here. --From: divingkataetheweirdo (talk) 17:10, 14 September 2016 (EDT)

Version 1.001's sprite that replaces the don't-rip-these messages is a reference to earthbound

There's a man in Moonside of EarthBound that says "I'll tell ya what I hate in this world. That's [yourfavoritefoodname]. The color, the smell, the taste, the texture... Hey you, you're drooling!" so the placeholder image is a reference maybe. https://youtu.be/UHjvxstM1Xk?t=5m10s

mus_sfx_voice_jafe might not be unused after all

I noticed something odd when I was watching a video of the Asriel Dreemurr fight. When Asriel slices the bullet board with his Chaos Sabers, you can hear something almost identical to the unused sound effect of Flowey saying "jafe". Listen closely when he slices in this videoː (https://youtu.be/RH05QKkk6Q8?t=9m50s) I also checked a few other videos, and they all had the same sound. Khalil805 (talk) 10:40, 28 January 2017 (EST)

  • We've had this discussion above. I still don't hear it, but if two different people independently thought they sound alike, it's at least worth looking into. Determining whether it's the actual sound will require digging, apparently. --billybobfred (talk) 16:57, 28 January 2017 (EST)

This page should be moved

With the release of the PS4 and PS Vita versions of the game, this page should probably be moved to Undertale (Windows, Mac OS X, Linux), or something similar. --periaster (talk · contribs) 14:18, 15 August 2017 (EDT)

Patch 1.05 and Patch 1.05a

It seems like some "Unused" stuff has come to the pc version of the game: The PS4/Vita's Dog Shrine was added to the PC version of the game when it was patched to 1.05 (Along with dialog that was cut off from being displayed due to a bug.)

https://www.youtube.com/watch?v=_fMhtjFol4Y is a video of it in action, but it's still unused because the room doesn't load correctly.

https://www.reddit.com/r/Underminers/comments/6vkpqw/how_to_get_the_dog_shrine_on_pc_105/ and https://www.reddit.com/r/Underminers/comments/6vmf96/how_to_make_the_dog_shrine_work_more_smoothly_in/

There's also text changes as noted here and here.

https://www.reddit.com/r/Underminers/comments/6vu2fp/999_mb_update/ https://www.reddit.com/r/Underminers/comments/6veinz/new_dialouge_in_sans_fight/ (You're correct, that's never appeared before. However, the line has always existed inside the strings. There are a few more hidden dialogue lines that have now been revealed both in this fight and in the overworld.)

I am not taking credit for finding these myself, I just wished to bring it to others attention when the game received two updates in a span of almost as many days. The preceding unsigned comment was added by Kittehtat (talk • contribs) 03:22, 25 August 2017 (EDT)

Borders in the PC Build

I opened up the game.win file in a text editor, and I found some plain text around the joystick configuration strings that would seem to signify that borders from the PS4 version were planned to also appear in the PC build The preceding unsigned comment was added by Techconspiracy (talk • contribs) 11:07, 15 October 2017 (EDT)

I doubt it's much more than just the result of porting the changes made in the console versions directly, instead of recoding from scratch. --8SomaCruzes (talk) 13:13, 15 October 2017 (EDT)

Pre-release info from the Art Book?

I recently purchased the Art Book for Undertale, and it contains information and pictures of a TON of stuff that never made it into the final build. Could this go into a Pre-release page? --Khalil805 (talk) 18:20, 27 November 2017 (EST)

Had a conversation with Toby Fox about this, actually. Here was the conversation:
Me: Heya, I was wondering if you've heard of The Cutting Room Floor, 
a wiki focused on cut and unused content in video games. I ask because 
I was wondering to what degree it would be okay to add art from the art 
book to the pre-release page on UNDERTALE. I understand that the art book 
is a commercial product, and therefore uploading much of its contents on 
the internet would render purchasing the art book meaningless. So would 
you/how much would you, be willing to allow on TCRF?

Toby: I don't think art book stuff really belongs on TCRF. It's more for
stuff from the actual games

Me: To clarify, the page I was specifically referring was the pre-release 
page of the game. According to the rules and guidelines, pre-release pages 
consist of content that is not present in released or leaked versions of 
the game and Information about the various changes a game went through
during its development. That's my reasoning for asking in the first place.
If you still would prefer me not; I understand, and I won't.
Thank you for your time.

Toby: Yeah I would suggest no

--8SomaCruzes (talk) 17:34, 28 November 2017 (EST)

The Characters In The Demo Are Made Of Ones And Zeros

My cousin and I were datamining last year and I saw something I can open up with a notepad like thing on a chromebook in the demo, all the character files were a string of ones and zeros, we got a an old file for froggit, and is was fully assembled sprite of froggit in ones and zeros, if anyone can confirm this, thanks, or it might be because we used a chromebook and couldn't use exe files. -TheDataMiner

I couldn't get the timestamp to work properly

Unverifiability of Email Screenshots

It is impossible to verify the authenticity of emails (or other private messages) when only a screenshot is provided (nor is there any reasonable alternative method for proving legitimacy of emails/messages received). It is ridiculously easy to fake screenshots, and there has already in the past been at least one case of someone faking an email from Toby about some of the unused music (which in retrospect is very obviously faked, but that's besides the point; not all hoax emails are necessarily so badly faked, and despite its appearance, most people assumed it was true until the individual in question admitted to it being fake. It was even cited on this article, where it remained for several months.).

Because of this fact, email screenshots simply aren't acceptable sources given that there's absolutely no way of knowing whether or not they are actually real, and I'm not sure why they have been accepted as sources on this wiki in the past. Could an administrator reply to this? I feel like there should be some kind of official policy on the matter... (or, at the very least, it would be nice to have some kind of official response regarding the acceptability of email screenshots as sources).

To be clear: this is not by any means an accusation; I don't necessarily disbelieve the various supposed screenshots of emails from Toby that are currently cited on this wiki (and indeed, it's a shame for the people that are telling the truth that they chose a medium that is pretty much completely unverifiable). --periaster (talk · contribs) 19:50, 15 November 2018 (EST)

Unimplemented/broken code?

Saw a twitter post talking about how this code doesn't seem to work, noting that Toby tried every possible combination of spelling... it seems the game would attempt to delete its .exe file after the Genocide ending. Is this worth adding to the main article? --Xkcdfan52 (talk) 18:38, 20 February 2020 (EST)

debug nintendo switch code?

(NOTE: this was added to the end of the article by another user, I'm just moving it here until it can be investigated more and the text rewritten to not sound so... amateur. --Rusty (talk) 02:24, 5 October 2020 (UTC))

(Didn't really know where to put this, so I'm throwing it here.)

File gml_Object_obj_gameover_test_pl_Draw_0 in the code shows this. It seems like this was to test dying. Reading the code a little can show dying with less than or equal to 0 HP will give "Game Under" text somewhere in the top (maybe top-left?) of the screen, and dying with anything else would display "Big Wienener Zone." in its place and "Hall of Failure." near the bottom. Though, I have no clue where the game is trying to put the text at the bottom (the text talking about pressing the spacebar and stuff). The stuff in the middle seems to show why you died without getting at or below 0 HP, though not entirely sure. This was taken from the Nintendo Switch version 1.09 update, though I doubt the file isn't on any other versions/platforms of the game. Still, wouldn't hurt to check.

gml_Object_obj_gameover_test_pl_Draw_0 This could possibly have been used for when Toby Fox was testing how dying in battles worked, to make sure it worked properly.(Didn't really know where to put this, so I'm throwing it here.)

Undertale Art Book Specifics

If something in the art book directly references something located in the game's files that went unused, such as Papyrus' unused date sprite, should the information provided be listed? Someone several years ago already asked this, however they were asking about stuff that never actually ended up in-game, not unused content. --Scrade (talk) 18:06, 7 October 2020 (UTC)

Yes, it should be listed. --Hiccup (talk) 19:04, 7 October 2020 (UTC)


hey, so i was recently looking through the files of the undertale sounds, and i believe this is most likely an asriel sfx, due to the convenient file naming. if anyone could check this out so i have the green light to edit, that would be great. -thesis [it/they] (talk) 23:50, 7 June 2021 (UTC)

Unused MTT EX attacks

There is code for unused MTT EX attacks, including the thunderbolt. https://www.youtube.com/watch?v=glKf36mNsbE

Hidden obj_laserswitch1 in room_fire_newsreport

UNDERTALE newsreport hidden laserswitch.png

Originally found by 真是滑稽了啊: [UNDERTALE] 如果你找到了隐藏按钮 --Dobby233Liu (talk) 12:00, 7 May 2022 (UTC)

Unused object obj_nastytree

Has unused dialogue. See this video made by 真是滑稽了啊 [UT] 不能在游戏流程中见到的枯萎树对话

* Every time this old tree
  grows any leaves, they fall
  right off.

[In room_water_undyneyard]
* It's a neat-looking tree.

[In True Pacifist epilogue, regardless of room]
* (It's natural for a tree to
  lose its leaves.)

--Dobby233Liu (talk) 12:08, 7 May 2022 (UTC)


Unused NPC with placeholder sprites and untranslated dialogue. Once again, found by 真是滑稽了啊: [UT] 雪镇被toby移除的npc

* Hey, shrimp!
* You look like you get your
  butt kicked a lot!
* Why don't you check out
  my new book on fighting
  in the library?
* That is...
* If you're tough enough to
  love reading books!

--Dobby233Liu (talk) 12:17, 7 May 2022 (UTC)

obj_grillbynpc_snowman1 & obj_grillbynpc_snowman2

Unused NPCs, found by 真是滑稽了啊: [UNDERTALE] 正常流程中见不到的雪人

* Fashion! Scarves!
* Layers!!
* Carrots!!!

* This guy's stupid hobby is
  going to make him melt.

--Dobby233Liu (talk) 12:20, 7 May 2022 (UTC)


Unused NPC probably found earlier, but I saw it in a 真是滑稽了啊 video: [UT废稿] 被移除的橙色攻击教学NPC

* That skeleton over there
  just told me how to dodge
  "orange attacks."
* What did he say...?
* Something like...
* "Traffic lights have three
  lights on them."
* "The third light, the green
  one, means GO."
* "The first light, the red
  one, means STOP."
* "The second light, the yellow
  one, means YIELD."
* "In order to dodge an
  orange attack, you must
  be moving."
* "So, just think of it
  this way..."
* "Red and yellow lights together
  make orange."
* "Then you obey the rule
  of the leftover green
  light, which means GO."
* "Easy, huh?"
* "Just think of a red and yellow
  traffic light which is
  actually green."
* Yeah...
* Then he started talking about
  plaid attacks...

--Dobby233Liu (talk) 12:29, 7 May 2022 (UTC)