Undertale Yellow

Undertale Yellow
Developer: Team Undertale Yellow Publisher: Team Undertale Yellow Platform: Windows Released internationally: December 9, 2023 This game has unused areas. This game has unused playable characters. This game has unused code. This game has unused enemies. This game has unused graphics. This game has unused items. This game has unused abilities. This game has unused music. This game has unused sounds. This game has unused text. This game has debugging material. This game has a hidden level select. This game has a prototype article This game has a prerelease article

This article is about a fan-made game project. Articles about fan games require explicit permission from administrators. This page was given permission by Rachel Mae.

To do: Document the unused/leftover SOUL modes Document the leftover battles and such from Undertale Customs Sections probably warrant reordering Demo leftovers? obj_genoflowey and unused flag global.flGenoCutscene, obj_credits, global.story obj_background_el_bailador_test_2_yellow Video journalists (or whatever it's called): Please consider looking at the UTY wiki too. FrostTheFrozenFox et al. has some discoveries there that we haven't covered (i.e. copied over) yet.

Undertale Yellow is a fangame of Undertale where you play as the yellow SOUL, a rootin' tootin' cowboy named Clover.

Sub-Pages

Prototype Info

Prerelease Info

Debugging Tools

Unused NPCs

There are 3 test NPCS in the game's code, meant to test interactions. One is of Testlet, the next is of Dalv, and the last one is of a now-deleted character.

obj_test_martlet

An unused NPC that uses Martlet's sprites, presumably used to test cutscenes activated by interacting with an object. Upon interaction, it says the following dialogue (without portrait):

Testlet	* Hello. This is MARTLET. * Just kidding, I'm TESTLET. * I'm here to show you how I can walk around. * Watch and learn, kiddo!
[after arrived == 1, which appears to be impossible]
Testlet	* I bet you can't walk like that, scrub. * Testlet, out!
[changes animation to martlet_fly_away which is nonexistent]
[after action_sprite == 0, which again, appears to be impossible] [Testlet gets removed, cutscene ends]

(Source: Original TCRF research)

obj_test_dalv

An unused NPC that uses Dalv's sprites. It faces the left and walks to (300, 120) along the X axis, with walk speed set to 2 and animation speed set to 0.2, and avoids the player.

(Source: Original TCRF research)

obj_test_follower

An unused follower for testing, implemented very differently in comparison to the actually used followers.

It uses removed sprites named spr_rals_up, spr_rals_right, spr_rals_left, spr_rals_right; the name "rals" suggests that these sprites were of Ralsei from Deltarune.

(Source: Sophie (sophie.gay))

Unused Attacks

Bowll

Bowll has an unused fourth attack, Bowll Test Song, which uses the Yellow Rhythm SOUL mode. As Bowll is immediately before El Bailador in the attack list, it was likely used to test El Bailador's attacks before the character was implemented.

This attack would've used the same patterns as El Bailador's attacks, but relevant script files, aside from a test script, no longer exist.

(Source: Undertale Yellow Wiki (FrostTheFrozenFox), original TCRF research)

Flowey

obj_flowey_1_attack_shoebox	obj_flowey_1_attack_audience

obj_flowey_1_attack_shoebox_creator and obj_flowey_1_attack_audience_creator are unused attack managers that are assumed to belong to Meta Flowey's 1st phase, due to following the same naming scheme as the standard attacks in it. They create and manage obj_flowey_1_attack_shoebox and obj_flowey_1_attack_audience respectfully.

• obj_flowey_1_attack_shoebox is an attack where a basket dumps rows of 2 boots (with holes to slide by between the boots) constantly over the SOUL.
• obj_flowey_1_attack_audience is an attack where an audience and a scoreboard appear, followed by the scoreboard lighting up the words "HATE", then the audience throws swarms of gravity-affected flowers at the battle box.
  • It would appear that "JOY" can also be displayed in place of "HATE"; in that case, mini-figures of the game's main cast will be thrown at the SOUL instead. However, it seems only related sprites remained in the game, instead of actual related code.

Neither attack has battle box dimensions associated, causing a game crash. The videos shown have their box dimensions set to 140 x 140.

(Source: Benjamin Urquhart (IAmAnIssue))

Unused Cutscenes

Test Cutscenes

Objects obj_cutscene, obj_cutscene2 and obj_cutscene3 contain cutscenes that appear to be for testing, with the last object already present in rm_debug.

However, obj_cutscene and obj_cutscene2 misuse cutscene_npc_walk in a way that causes them not to proceed correctly. obj_cutscene also doesn't initialize cutscene_music, causing it to crash the game by trying to play Blossom, and obj_cutscene2 doesn't end itself. obj_cutscene3 works as-is. The videos here were recorded from a mod that has those bugs fixed and puts each of those objects in rm_debug.

(Source: Original TCRF research)

To do: Add some more elaboration/quality to the actions in the transcripts

obj_cutscene

[Starlo looks behind for a while then faces forward again]
Starlo	* This is really bad. * I'm a fake test Starlo. * But I won't leave it this way!
	* (It doesn't have to be this way.)
[Starlo walks a bit down]
[awkward pause]
[Blossom starts playing]
Starlo	* A

obj_cutscene2

[Blossom starts playing]
Ceroba	* I'm really sorry about the pops Starlo. * When I see them... It's like a demon takes over.
Starlo	* Look at it from my point of view. * You're looking forward to some pops after a long hard work day... * Only to come home just to see... * Just to see...
Starlo	* Argh! * I need time...
[Starlo walks away to the left]
Ceroba	* Loool worth it. * Those pops were delicious.
[Ceroba faces forward] [Blizzard Approaching starts playing]
Ceroba	* What are YOU looking at?!

obj_cutscene3

obj_cutscene3 has Starlo walk into the player and initiate the fake battle cutscene with Rephil. The fake battle appears exactly as it does in-game:

[Starlo walks down for a bit, presumably to where the player is supposed to be]
[Fake fight with Rephil starts]
Rephil	Whoa whoa whoa! No need to start a fight! Let's be civil 'ere. Do you attempt to attack everyone you encounter? Calm down, will ya?
[Game returns to the overworld, cutscene restarts]

Early Neutral Hotland Rooftop Cutscene

obj_hotland_roof_cutscene_neutral_2 appears to be an early copy of obj_hotland_roof_cutscene_neutral, without some details such as some dialogue variations and a quick-save before the fight with Meta Flowey.

Unused Dialogue

To do: obj_quote_defeat_ext

Unused Ceroba TALK line

Both of Ceroba's talk dialogues in the room immediately after meeting Axis is bugged. This is due to a break instruction being placed in the wrong spot, resulting in dialogue for the next room being pulled.

Intended	Bugged
* So Axis is completely artificial intelligence? * Well... artificial at least. * Still, unemotional as he may be... * The fact he so closely resembles life is impressive.	* Keep a move on, Clover. * Well... artificial at least. * Still, unemotional as he may be... * The fact he so closely resembles life is impressive.

Intended	Bugged
* Standing around won’t get us to Hotland. * Come on.	* Keep a move on, Clover. * Come on.

(Source: Undertale Yellow Wiki)

Unused Items

Various unused items exist in the game data.

Item Name	Stat Info	Info Text	Use Text
Super Ammo	15ATK (Stated) No effect (Actual)	* "Super Ammo" Weapon AT 15 * (Regular toy gun ammo sold at your favorite convenience store.)	* (You load the Super Ammo.) * (Your gun now feels lighter than your conscience.)
Golden Scarf	25DEF	* "Golden Scarf" Armor DF 25 * It's emitting a violently golden shine.	* (You put the Golden Scarf on. * Your tremendous taste for fashion makes monsters go easy on you.)
Homemade Cookie	Heals 20HP	* "Homemade Cookie" Heals 20 HP * (A little burnt on one side, but looks yummy anyway.)	* (You scarf down the Homemade Cookie.)

Unused Rooms

rm_live_buffer

An empty room. Based on its name, it appears to be related to GMLive in some way, similar to room_gms_debug_failsafe in Deltarune Chapter 1&2.

(Source: Undertale Yellow Save Editor)

rm_dunes_30_old

An older version of Oasis Valley, without the café and the fancy building leading to the mines.

rm_dunes_35

Related to the previous entry; this room was supposed to lead to the café before it became a part of Oasis Valley.

rm_steamworks_07

An old version of Steamwork's first steam vents section, containing a much harder version of it.

rm_steamworks_17b_old

An old version of a room with a console that opens a gate in the Steamworks, lacking a section with steam vents.

rm_build_ending

Another empty room. Based on its name, it may have been used to inform playtesters of a build's ending at some point.

(Source: Undertale Yellow Save Editor)

rm_battle_flasback_parent

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: Since some GM update rooms can have children rooms (RPG Maker reference?), so maybe this has something to do with that.

An empty room that appears to serve as the base of the overworld portions of Meta Flowey's phase 1.

(Source: Undertale Yellow Save Editor)

Unused Summary Screens

rm_score_room

rm_snowdin_14b_yellow	rm_score_room

This slightly more crowded copy of the cabin of Honeydew Resort (rm_snowdin_14b_yellow) appears to have served as a roundup for a playtest build. As you can't move around, you can't see everything happening in it. You get to see some neat data, though.

• COMPLETION TIME: In the format mm:ss
• TOTAL DEATHS
• DALV KILLED
• MARTLET CHASED OFF: Interestingly, the corresponding variable in this screen is named martlet_killed.
• ENEMIES KILLED: As global.kill_number[0] is set to 9999, this number is normally ridiculous.
• MO ITEMS BOUGHT
• SLURPY SAVED
• MICRO FROGGIT FOUND: NO/YES/KILLED

(Source: Undertale Yellow Save Editor, original TCRF research)

rm_summary

The screen (in the middle of fading out) as seen by changing the destination room of a Pacifist save

Another unused summary screen resides in a room named rm_summary. It shows the following data:

• ROUTE: Pacifist/Neutral/Geno
• FULL NAME: Hardcoded as Clover, or Gun-Hat if Flowey used that nickname in Snowdin
• PLAYTIME: In the format hh:mm:ss
• LEVEL, TOTAL EXP, DEATH COUNT
• FUN LEVEL: Displayed as 420 instead if it's 100
• SLRUPY SAVED: No.../Yes
• GOLD SPENT, TOTAL GOLD
• BOSSES KILLED: Can contain Da (Dalv), De (Decibat), St (Starlo) and Ax (Axis), or simply be NONE
• ENEMIES KILLED
• TIMES HIT
• TIMES MO BROKE THE LAW: Random integer between 100-9000, with a 1/100 chance for another number between 1-100 to be added to it each frame
• Additionally, "#breaktheshufflers" is drawn at y=340 (and invisible as a result).

A background that changes depending on the route the player was on would have faded in; however, the background sprites have been removed, and as the result only a pitch-white room will be shown, rendering the data illegible. 3.5 seconds after the fade in, the OST Kanako (or Greenhouse at 0.3x, if the player was on the Genocide route) will play, but will not loop.

Based on the mention of a "completion cards channel", this screen may have been made for a playtest build, and playtesters were meant to send a screenshot of this screen to the aforementioned channel.

(Source: Original TCRF research)

Unused Graphics

Editor Sprites

The random encounter generator object (obj_rndenc), despite not being visible, has this sprite regardless. It is a winking face with a red right eye and a pink blush. Perhaps it's the evil cousin of Super Mario Bros. 2‍ '​s smiley faces.

(Source: Original TCRF research)

Dalv

To do: Apparently there is an unused variant of the scene that uses this.

Dalv has an unused animation for breaking the boards at the end of the Dark Ruins exit, using his lightning powers instead of breaking the boards with his hands. Its sprite name suggests that this would have been used during a Neutral run, however, it doesn't appear at any point during the Neutral cutscene, with it using the pacifist version of the animation instead. This animation also exists in the demo, but oddly was remade for Dalv's new design, despite still not being used.

• 

  spr_dalv_npc_boards_neutral

Sans

Sans' left-facing and up-facing walk cycles exist in the game data alongside three of his talk portraits.

• 

  Walking left

• 

  Walking up

• 

  Normal face

• 

  Looking left

• 

  Winking

These sprites are in fact part of the WildEast texture group; this could mean that Sans was possibly meant to appear in the Wild East.

(Source: Undertale Yellow Wiki (FrostTheFrozenFox))

Ceroba

Ceroba has two talk portraits that go unused. It's unknown where they would have been used, especially the first one.

• 

  Internally named "wat", derp face expression.

• 

  Internally named "grinning".

Ceroba's Animated Hair

Ceroba's hair-tails that appear in her Pacifist boss fight have 14 frames of animation showing them waving up and down, but the object's animation speed multiplier gets set to 0 at multiple different points, causing only the first frame to ever render. A shader is instead used to create a more subtle waving effect.

Specifically, the functions gml_Object_obj_ceroba_hair_Create_0, gml_Object_obj_ceroba_hair_Step_0, and gml_Object_obj_ceroba_hair_Other_7 all set image_speed to 0, and the latter two also set image_index (current frame number) to 0. However, attempting to simply remove/change these calls so the animation plays will result in broken graphics in-game, as the shader used for the hair relies on U/V coordinates being passed in, which are normally only set based on the first frame. To fix this, open gml_Object_obj_ceroba_hair_Draw_0 and add the line uvs = sprite_get_uvs(sprite_index, image_index) right before the last shader_set_uniform_f call. Alternatively, the shader can be disabled entirely by removing the first 6 lines of this function.

While the above bug could potentially be reason the animated hair was cut, it's also possible that it was removed simply for looking too silly, especially for the mood at this point in the plot.

Sprites	In-Game

(Source: Original TCRF research)

Bartender

A version of Dina, the bartender in the Wild East, with a pink color pallete.

• 

  Standing still

• 

  Leaning animation

El Bailador Light Cones

In-game, the light cones on either side of El Bailador are magenta, light green, and dark blue to match the colors of the notes in the battle box. However, light cones colored red, yellow, light blue, and pink can be found in the files. Interestingly, all of these colors combined with the used ones (besides magenta, and missing orange) happen to match up with the colors of the SOULs down to the exact hues. Could SOUL mechanics have been a part of this fight in a previous lifetime?

Coffins

Just like Undertale, a room containing the coffins of the previous humans who perished in the Underground exists, in the same spot as the original game. Normally, the player can only see five of the coffins, with two more being off-camera. However, inside the file exists a total of eight coffin sprites (stored as frames in spr_coffins), with three of them being absent from normal gameplay: frame 2 containing a purple SOUL coffin, which is not present in the room at all, frame 6 being a duplicate of the blue SOUL coffin (frame 4), and frame 7 being an empty coffin without a colored SOUL and lacking a placard.

• 

  spr_coffins frame 2

• 

  spr_coffins frame 6

• 

  spr_coffins frame 7

Train

A full train sprite can be found in the game and is placed outside of the player's view in the Wild East. Considering the joke in the scene this was meant for (the trolley problem), this was either part of an early version of the scene in which a real train was involved, or this was used for comparison's sake.

• 

  spr_starlo_express

Flowey Fight Sprites

Unused sprites meant for the "intermission" attack (the long one with the hands and the creepy face in the background) of Flowey's first phase. It seems like a different creepy face would've shot "HA!"s at the player at some point.

• 

  spr_attack_flowey_intermission_ha

• 

  spr_attack_flowey_intermission_laugh (first frame)

• 

  spr_attack_flowey_intermission_laugh (second frame)

Two images of the Polygonal portion of Flowey's second phase glitching out. According to developer AeroArtwork, these were intended to show up during the phase randomly and sporadically, but were scrapped because they were found too distracting.

• 

  spr_battle_flowey_lowpoly_glitch1

• 

  spr_battle_flowey_lowpoly_glitch2

GameMaker Electricity Particle

A lightning particle texture from GameMaker's particle emitter presets.

Pre-Assembled Monster Battle Sprites

Assembled sprites of Ceroba, Dalv and Frostermit with lines over them, possibly used to assist in aligning the separate parts of their unassembled sprites.

spr_ceroba_body_battle	sprite678	sprite781

Unused Zenith Martlet Frames

During the No Mercy route's final boss, there is a section where Martlet takes off and very shortly returns to the battle box as an actual obstacle that the player needs to dodge. The animation of her returning has some unused frames in which her sprite color shifts from blue to white, telegraphing that she herself has become an attack. In-game, however, the first couple frames are skipped entirely.

• 

  Full animation restored

(Source: Original TCRF Research)

Uncropped Honeydew Resort Credits Layout

spr_credits_resort	credits_resort

For some inexplicable reason, an uncropped version of the background used during the scene in the credits where Dalv plays his organ to an audience at Honeydew Resort can be found with the exact same filename as the used background, only without the "spr_" prefix that all other sprites have. Of note is that every object not seen in the small window used in the credits is missing, except for the carpet in front of the bar, oddly enough. (The door is still present because that's a part of the background itself, not a separate sprite.)

Miscellaneous

A light cone and blob/stone. The light cone is similar in color to the magenta one used in-game, but it's slightly off.

• 

  sprite1182

• 

  sprite1183

Unused Enemies

MasterSwordRemix

Objects named obj_masterswordremix_body_a, obj_masterswordremix_sword_a, obj_masterswordremix_shield_a exist, appearing to be meant for a self-insert of developer MasterSwordRemix. obj_masterswordremix_body_a specifically seems to be based on an early version of obj_crispy_scroll_head_a. This in fact appears to be a removed enemy - there's no trace of associated sprites, dialogue, or other code.

Supposedly another self-insert of MasterSwordRemix, named Rodney, would appear as a part of the band in Honeydew Resort and UG Apartments' hotel.

(Source: Original TCRF research)

Unused Audio

Unused Music

There are a few unused tracks in the mus directory.

dalv_diary.ogg

This track would have been played while reading through Dalv's diary entries; however, the game only tries to stop and not play it.

micro_temperature.ogg

This track was likely intended for the Golden Coffee room in Snowdin. The final game uses "Fun-Sized" instead.

final_stand.ogg

This track uses Martlet's leitmotifs; it might have been a precursor to Retribution, the theme of the second phase of her Genocide final boss fight.

prebattle2_yellow.ogg

"Enemy Approaching" from Undertale. There is a chance this was intended to replace prebattle1_yellow (which ended up becoming the normal Dark Ruins encounter theme) after the intro Froggit fight.

This is named mus_battle1 in the Demo and is referenced by two enemy objects, however there obj_radio handles battle music instead of enemy objects.

(Source: Original TCRF research)

shop.ogg

"Shop" from Undertale. While gml_Object_obj_shop_generator_Create_0 defines it as the music of all shops except for the Wild West's gun shop, those shops and the gun shop's Genocide variant always inherit music from the overworld as hardcoded in scr_summon_shop.

(Source: Original TCRF research)

danza_attack([01-10]/_finale_[01-02])_yellow.ogg

Attack segments of "DANZA", El Bailador's battle theme, with the orchestra hit notes. Aside from scr_audio_fade_out_battle and scr_audio_stop_sound referencing all of these probably by mistake, danza_attack_01_yellow is only referenced by test song data. Notably, some of the note patterns are slightly different from how it appears in-game.

(Source: Original TCRF research)

Early/Alternate Tracks

Unused Track	Related Track
lounging_around.ogg	relaxation.ogg (Relaxation)
pipin_hot_yellow.ogg	honeydew_lodge.ogg (Honeydew Cabin)
trampled_flowers.ogg	guardener_theme.ogg (TENTH LEVEL LOCKDOWN)
mothers_love_temp.ogg unforgiving.ogg (Duplicate)	mothers_love_intro.ogg mothers_love_phase_1.ogg (A Mother's Love)

cafe_arcade.ogg

cafe_arcade.ogg (unused)	cafe.ogg ("Café Dune")

A chiptune version of "Café Dune". When the object obj_dunes_35b_dynamic_music is present in rm_dunes_35b, this plays when you approach the arcade machines in the room. There's also a chance this was originally intended for Mew Mew Love Blaster or another arcade game in the Oasis Café.

Duplicate Tracks

detour.ogg

Duplicate of detainment.ogg (Detainment 014).

justice.ogg

mus_gameover_yellow	mus_justice

A version of gameover_yellow.ogg (Justice) with slight mixing differences. Interestingly, while the Demo's game over theme has the filename mus_justice, it (or at least the metadata) matches the final version.

Unused Sounds

snd/mail_jingle_alt.ogg

This appears to be an alternate version of the jingle heard when interacting with a UGPS sign. For some reason, it takes Doki Doki Literature Club!‍ '​s theme leitmotif; perhaps this was a inside joke of the devs.

(Source: Original TCRF research)

snd_talk_sans

Sans' talking sound from Undertale.

sndfnt_sans

A weird, presumably dummied-out sound, supposed to be for Sans according to the filename. This is a duplicate of "House Guest" in v1.1 of the Demo.

Undertale Customs Leftovers

These appear to be artifacts of Undertale Customs, another Undertale fangame developed by Yellow programmer mysteryracer before joining the development team.

They are usually guarded under the condition global.game_mode == "customs".

Undertale Weapons Text

Undertale weapon info text can found in a unused object named obj_text_info_item_selection_pause_screen_overworld.

Weapon	Info
Stick	Weapon AT 0 * Its bark is worse than its bite.
Toy Knife	Weapon AT 3 * Made of plastic. A rarity nowadays.
Tough Glove	Weapon AT 5 * A worn pink leather glove. For five-fingered folk.
Torn Notebook	Weapon AT 2 * Contains illegible scrawls. Increases INV by 6. (After you get by an attack, you say invulnerable for longer.)
Burnt Pan	Weapon AT 12 * Damage is rather inconsistent. Consumable items heal 4 more HP.
Empty Gun	Weapon AT 15 * An antique revolver. It has no ammo. Must be used precisely, or damage will be low.
Worn Dagger	Weapon AT 15 * Perfect for cutting plans and vines.
Real Knife	Weapon AT 99 * Here we are!

Mart-2-Go

Text related to a shop named Mart-2-Go from Customs was copied over to the Yellow game mode. There's no code to set up its items and song in gml_Object_obj_shop_generator_Create_0, and sprites for its background and shopkeeper no longer exist. The shopkeeper, the self-insert of mysteryracer in Customs, notes that you are not supposed to enter this shop upon entrance.

(Source: Original TCRF research)

Before buying something

• Uhh... so how did you get here, anyway? [Upon entrance]

Exit

• [Upon exiting]
  • Alright, catch you on the flip side!
  • Peace out!

Oddities

Sprite Naming

A number of duplicate sprites exist in the file that don't follow usual sprite naming (spr_). Those include Toriel overworld sprites, her dialog faces, Frostermit sprite in his hidden and regular form, and 2 frames of Kanako's dialog sprite talking with her eyes closed.

Internal Music Names

While the internal names of music mostly reflect their names in the OST, some have notable differences.

OST Name	Internal Name	Notes
Seclusion	coolestcave	This song plays in the cavern in the Dark Ruins and used that name even in the demo version. With a name like that, one might expect this to play in an ice cavern, but the only two caverns in the game (ignoring the Underground) aren't ice-themed. The usage of "coolest" in this case is probably in the informal sense, then.
Mo Money	gimme_ur_cash_yellow
Honeydew Cabin	honeydew_lodge	"lodge" is mostly the same term as "cabin", although "cabin" is more often used for houses in wild or remote areas, which is correct in regards to the location.
Sunnyside Farm	sunnyside_ranch	Also the same term-swap as Honeydew Cabin, as while "farm" and "ranch" are often considered to be interchangable, "ranch" actually refers to an area where animals are raised, which isn't very correct in regards to the location, which fits the definition of a "farm" more since the place only grows corn.
Tomorrow Means The Surface	abandoned	Correct in regards to the location (specifically, the intro to the Steamworks), likely just changed because the new title is more thematic.
The Freedom to be Flawed	well_be_okay
just us	missing_inaction	All of the tracks relating to Flowey's neutral ending have lowercase, and very apt titles. It is possible that earlier in development, all of Flowey's tracks had longer, perhaps even properly capitalized names, and later on, the development team chose to rename the tracks to fit the more nightmarish themes of the ending, leaving just these track titles. This one specifically seems to refer to the casualty classification.
subconscious	the_wandering	Ditto to "just us".
crescendo	crescendo_of_dread	Ditto to "just us".

Flowey Background

To do: A whole section for stuff like this. IDK what to name that so...

The background of the 1st phase of Flowey's boss battle has colors; however, it shows up distorted and in grayscale in-game.

Audio

• All music in the game has a sample rate of 32kHz to presumably save space, except "Main Menu 5 (Steamworks)".
• The following music are embedded in data.win for some reason:
  • Main Menu 5 (Steamworks) (mus_menu_steamworks)
  • AFTERLIFE (mus_f_phase2_gray)
  • Retribution (mus_retribution)
• "AFTERLIFE" is also in mono for some reason.

Revisional Differences

To do: Expand on what was changed. The original release note aimed to reduce spoilers.

v1.1.0

The v1.1 patch was released on December 16, 2023, with the following changes.

(Source: Game Jolt)

Major Changes

• Added two new accessibility options:
  • Easy mode: When enabled, the Hats now provide DEF values for an easier experience (can be changed mid-playthrough)
  • Auto-Rhythm: When enabled, automatically hits the notes in the El Bailador fight without having to press a button, if you are in the correct lane
• Reworked the final pacifist boss fight attacks to be less chaotic and unpredictable
• During the Axis chase sequence, Axis was supposed to slow down after every time he catches you. It now works as intended
• Added an Act heal to the final No Mercy route boss (Also fixed a crash caused by this Act option being partially implemented but not working)

Crashes and Softlocks

• Fixed a crash caused by using the “shoo” command twice during a dunebud duo fight
• Fixed a crash caused by interacting with an object while completing the minecart puzzle
• Fixed being able to backtrack on the second steam puzzle, which could lead to a crash and your save being ruined
• Fixed a crash caused by pressing Z on frame 1 of the attack targetting cursor
• Fixed a crash caused by a demo savegame being present on your system
• Fixed a softlock caused by blocking Mo’s path as he leaves
• Fixed a softlock caused by interacting with the crystal tree in Snowdin from the left
• Fixed a softlock in the final pacifist boss fight where the selection soul would disappear from the menu
• Fixed a softlock caused by sending one of the mine carts off-track
• Fixed an issue that caused one of Cactony’s attacks to never end
• Fixed a softlock caused by mashing through the text fast in the raft room in Snowdin
• Fixed a softlock caused by turning around immediately upon entering one of the rooms in the late-game
• Fixed a very specific bug that caused you to get stuck on a bridge upon retrying a fight under it
• Fixed a crash during the Guardener fight that could happen on her last line of dialogue
• Fixed an unrelated softlock in the Guardener fight
• Fixed a crash on the final No Mercy boss caused by getting hit on the same frame as you defeat the boss

Other

• Fixed the tutorial buttons being swapped in the arcade minigame, also added additional information to the tutorial screen
• Changed the Delta Rune Patch gold requirement from 150 to 100
• Increased the item stock in the final shop of the No Mercy route (Applies on save reset)
• Fixed mistakes in the credits
• Fixed several line breaks, typos, and mistakes in the text
• Altered one of Sir Slither’s act dialogues to make the sparing condition more apparent
• Added an autosave after the final pacifist boss as a temporary help with reported performance issues in this cutscene
• Added the Auto-Fire toggles to the death screen of relevant fights so you don’t need to restart the game and fights to change it
• Fixed a mood-ruining issue in the final act, in which Chujin’s television would glitch out, blue screen, display an image of Chujin, and have blaring sounds during a cutscene; caused by a fun value of 60-62’s event occurring at an unintended time
• Other minor fixes

References

• Undertale Yellow Wiki