Deltarune

Deltarune
Developer: Toby Fox Platforms: Windows, Mac OS X, Nintendo Switch Released internationally: October 31, 2018 (Chapter 1; Windows, macOS) February 28, 2019 (Chapter 1; Nintendo Switch) This game has unused areas. This game has unused code. This game has hidden development-related text. This game has unused enemies. This game has unused objects. 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 prerelease article

New! From the maker of Undertale, by Toby Fox! It's Deltarune, by Boxy Oft!

To do: Unused bullet patterns Blanked and removed objects obj_king_body Version differences Verify that there are no major differences in the PS4 version's unused content compared to the desktop and Switch versions Revisional differences in the recent update to the Switch version

Subpages

Unused Enemies and Encounters "See you in the next hell, losers!" –Ralsei

Unused Text Is that a cut on your face, or part of your eye?

Debug Mode

Edit the following locations in data.win.

• 3E8144 and 3E8138: Set to 01. Enables debug mode.
• 3E8568: Set to 00. Disables the "dogcheck", allowing you to enter rooms above 130 via save file editing.
• 404450, 404468, 51DAA8, 52436C, 524370: Set to 1800, 1801, 94, 00, and FFFFFFFF respectively. Fixes the crash when warping into room_flowershop_2f.
• 46C04C: Set to 0000. Enables the kingcutscene debug display.
• 480A84: Set to 00000000. Enables the Starwalker hotkey.
• 4C6230: Set to 01. Enables the Jevil chain debug display and hotkeys.

Enabling debug mode will show a few additional things during the game:

• The frames per second will be printed in the top-left, in red.
• Areas with enemies will have a red and cyan box to the upper-left and lower-right of your character.
• In the King fight room, the values of several variables will be displayed in the upper-left corner of the screen.
• In the Jevil fight, a red square will be shown on Jevil's neck.

Additional hotkeys are available as well, some of which are reused from the previous game.

• O: Sets the FPS cap to 3.
• P: Sets the FPS cap to 60.
• Z and other "action" buttons: Displays a small rectangle in front of you for one frame, indicating the "interaction" hitbox.
• R: Restarts the game. No need to press it 7 times.
• S: Opens the save dialog anywhere. Using it will usually unlock your movement, if it was locked by a script.
• L: Immediately reloads your save.
• D: When held down, pushing 3 through 9 will teleport you to various rooms starting at the dark world to the middle of the game. The plot and party variables are updated to bring the story to the correct position.
• J: When held down, pushing 6 through 9 will teleport you to various rooms, the first 2 to a broken battle test room, and the other 2 to the two end game bosses.
• W: When held down, pushing 2 through 6 will teleport you to various rooms near the end of the game. The plot and party variables are updated to bring the story to the correct position.
• C: When held down, text will automatically advance as if you were using the Wrist Protector item.
• Ins: Moves you to the previous room by internal order.
• Del: Moves you to the next room.
• F10: Takes a screenshot and saves it within the DELTARUNE folder.

Additionally, there are various context-specific debug commands.

During the 'CONTACT' intro:

• Backspace: Skips to Kris's room.

In the light world:

• F: Sets the FPS cap to 58.

When fighting the Starwalker:

• Backspace: Dispels the Starwalker (though does not make the original Starwalker appear).

In an elevator:

• 0: Plays the elevator moving animation, though does not change the room you are taken to by exiting. Also moves backwards through the background colors (see 2).
• 1: Starts the elevator moving animation, but never stops it. In the upper elevator, this prevents you from moving and thus softlocks the game.
• 2: Changes the background color; grey (CC basement) -> lighter grey (CC ground floor) -> white (CC top floor) -> purple (Jevil's prison) -> peach -> cyan

When fighting Jevil:

• Down: Decreases 'condition' by 1. This starts the 'head chain' animation, if it's not already playing. If it is playing, this has different behaviour.
• Up: Increases 'condition' by 1. If the head chain animation is playing, this will stop it. If the rotate/fade animation is playing, this has different behaviour.
• Space: Increases the distance at which Jevil's head is swinging, during the 'head chain' animation.

(Source: Original TCRF research)

(Source: NathaanTFM (offsets to change for debug mode and dogcheck bypass), ExperimentT (additional keys))

Unused Music

dogcheck.ogg

Dogcheck's back, baby, and with an all-new song. Setting your savefile to start you in a room under 1 or over 130 will play this chill tune while a sleeping dog replaces whatever you were trying to sneak into; we'll leave it up to you to decide whether or not that qualifies as "unused". Internally, this track is referred to as SONG_THAT_EMERGES_FROM_A_SLEEPING_DOG.

thrash_rating.ogg

This track's name seems to imply that it would have been used around the "Thrash Machine" segment.

(Source: Original TCRF research)

Unused Sounds

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: snd_error

snd_battleenter

If the filename is to be believed, this was used as the sound that plays when you enter battle; the sound used in-game is called snd_tensionhorn.

snd_creepylaugh

Muffet's laugh from Undertale.

snd_cymbal

Pretty self-explanatory.

snd_drumroll

Also self-explanatory. This sound effect was taken from Undertale.

snd_ehurt1

Flowey's hurt sound from Undertale.

snd_hit

Another Undertale sound effect.

snd_hurtsmall

A 'small' hurt sound. Also from Undertale.

snd_mouse

The mouse hole sound effect from Undertale. Note that there is an unused armor called MouseToken.

snd_stardrop

snd_susieroar

Susie roaring.

snd_txtecho

An echoing text sound for Toriel, used in a cut part of CONTACT immediately before Kris wakes up.

snd_txtpap

Papyrus's dialogue sound from Undertale. Papyrus does not appear in Chapter 1 of Deltarune, and as such has no dialogue.

snd_voice1

What appears to simply be a duplicate of Alphys's (used) text sound.

(Source: Original TCRF research)

Development Text

At the start of lang_en.json and lang_ja.json are the following strings, respectively:

  "date": "1540902565549",

  "date": "1540902546049",

These are millisecond-specific Unix timestamps corresponding to October 30, 2018 at 12:29:25.549 and 12:29:06.049 UTC, respectively. They presumably represent the last times that the files were generated before release.

(Source: Original TCRF research)

Unused Items

Items

ID		5	10	14
Full name		BrokenCake こわれたケーキ	GigaSalad ギガサラダ	FavSandwich ファボサンド
Battle name				Favwich ファボサンド
Full description		Though broken, it seethes with power. A master smith could fix it. 壊れてもなお　すさまじい気を発するケーキ。 鍛冶職人なら直せるだろう。	An enormous salad... but, it's just lettuce, so it's worthless. +4HP 巨大なサラダ…というか ただの使えないレタス。4HP回復	You'd think it tastes perfect. Heals 500HP.
Battle description		Heals 20HP 20HP 回復	Heals 4HP 4HP 回復	Heals ALL HP HP 全回復
Target type		Individual	Individual	Individual
Usable		Yes	Yes	Yes
Use text		* ~1 used the BROKEN CAKE!	* ~1 used the GIGASALAD! ＊ ~1は 　 ギガサラダを使った！	* ~1 used the FAV SANDWICH! ＊ ~1は 　 ファボサンドを使った！
Character comments	Susie	(No comments)	Why this!? 意味わかんねー！	(It's SO good!)
	Ralsei		Let's be healthy! ヘルシーだね！	K-Kris!? I...
Value		5	10	10
Notes		This was replaced with key item #3 (BrokenCake), the main difference being that the key item cannot be consumed or sold.		Effectively identical to the ReviveMint, though with a far lower value.

(Source: Original TCRF research)

Weapons

ID		4	8
Name		EverybodyWeapon	Trefoil
Description		It felt right for everyone.	Mossy rapier with a clover emblem. Increases $ found by 5%.
Attack		+12	+4
Defense		+6	0
Magic		+8	0
Ability		(No ability.)	Money Earned UP
Value		150	250
Characters	Kris
	Susie	Uhhh... Ok.	That tacky thing? No!
	Ralsei	A perfect fit!	Not my shade of green...
Notes		Probably for dev purposes; the weapon is fairly overpowered and is able to be used by multiple characters (unlike any other weapon). This weapon also does not have an icon, unlike the others (given that it is not a sword, axe, or scarf).	Despite the description and ability, this weapon does not actually increase the D$ earned from battles.

In addition to these unused weapons, there are also several stats that are not used by any weapon:

• weapondf: DF; defense. This stat is taken into account by the game, and is simply unused due to the fact that none of the weapons in the game increase defense (...other than the EverybodyWeapon).
• weaponbolts: Bolt speed. This is not fully coded in, though would probably have altered the 'bolt speed' (which has a constant value of 8), which determines the speed at which the 'bolt' (the moving bar that appears when attacking) travels. Set to 1 for all weapons.
• weaponstyle: It is unclear what the 'weapon style' stat would have been used for. On startup, it is set to a default value of "Normal", though this is overwritten by the stats of individual weapons ("?" for all weapons, and " " for the null weapon). The game checks the stat when displaying the EQUIP and POWER menus, though does not display it or do anything else with it.
• weapongrazeamt: Graze amount. Adds to the amount of TP gained when 'grazing' bullets with your SOUL. Set to 0 for all weapons.
• weapongrazesize: Graze size; TP range. Alters the range at which you can graze bullets. Set to 0 for all weapons.

(Source: Original TCRF research)

Armor

ID		3	6
Name		Pink Ribbon	MouseToken マウスコイン
Description		A cute hair ribbon that increases the range bullets increase tension.	A golden coin with a once-powerful mousewizard engraved on it. 金色のコイン。かつて勢力をふるった ネズミの魔術師の絵が彫ってある。
Attack		0	0
Defense		+1	0
Magic		0	+2
TP range		+20	0
Ability		TP Range	(No ability.)
Value		100	120
Characters	Kris
	Susie	Nope. Not in 1st grade anymore.	This guy's... familiar? こいつ…どっかで見たことあるな…
	Ralsei	Um... D-do I look cute...?	Chu! Healing power UP! チュウチュウ！　回復パワーアップ！
Notes		Almost identical to armor #4, White Ribbon, though with an actual ability (and with a lower defense boost).

There are several stats that are unused by any armor:

• armorat: AT; attack. This stat is taken into account by the game, and is simply unused due to the fact that none of the armors in the game increase attack power.
• armorbolts: Bolt speed. As with the weapon equivalent, this is completely unused (not even coded in), and would presumably have altered bolt speed (ie. the speed of the moving bar when attacking). Set to 0 for all armors.
• armorgrazeamt: Graze amount. Adds to the amount of TP gained when 'grazing' bullets with your SOUL. Set to 0 for all armors.
• armorgrazesize: Graze size; TP range. Alters the range at which you can graze bullets. Used by the unused item Pink Ribbon. Set to 0 for all used armors.

(Source: Original TCRF research)

Light World Items

Light World items, which use Undertale‍ '​s inventory system, are not segregated into separate types of items.

When you return to the Light World at the end of Chapter 1, the game checks what your equipped Dark World weapon is. If it is the Spookysword, your Pencil will be replaced with the Halloween Pencil. If it is the Trefoil (unused; see above), your Pencil will be replaced with the Lucky Pencil. There is no other way to obtain these items, leaving the Lucky Pencil unused.

ID	Name	Description	AT	Use text
7	Lucky Pencil ラッキーエンピツ	* "Lucky Pencil" - Weapon 1 AT * Covered in green clovers and rainbows. ＊ 「ラッキーエンピツ」 - ぶき　AT1 ＊ ぜんたいに　みどりのクローバーと 　 にじの　えが　かかれた　エンピツ。	+1	* You equipped the Lucky Pencil. ＊ ラッキーエンピツを　そうびした。

Additionally, when the Ball of Junk is dropped, all items, weapons, and armors in your Dark World inventory (ie. not including equipped weapons/armors or key items) will be deleted. Since the player is unable to return to the Dark World in Chapter 1, this behavior cannot be seen in the demo.

(Source: Original TCRF research)

Old Items

These items are defined in scr_itemdesc_b and scr_itemdesc_oldtype. Nothing is present of them other than their descriptions. The formatting of the descriptions (with manual line breaks) indicates that these descriptions probably predate the addition of automatic line wrapping to Deltarune‍ '​s dialogue system; this along with the style of the descriptions appears to indicate that these items probably used Undertale‍ '​s inventory system, or a system much more like it than the final one.

ID	Full description	Battle description	Notes
1	* "Dark Candy" - Heals 60 HP * Black and red star that tastes like marshmallows.	Heals 60HP	An early version of Dark Candy. Note that according to the descriptions, it originally healed 60 HP instead of 40.
2	* "Life Dew" - Revive Ally (Weak) * Glowing dew... * It refreshes your SOUL.	Revive ally (Weak)	Presumably the predecessor of the ReviveMint.

(Source: Original TCRF research)

Unused Spells

ID	1	5	6
Full name	Rude Sword ルードソード	Red Buster レッドバスター	Dual Heal Ｗヒール
Battle name	RudeSword ルードソード
Full description	Deals moderate Rude-elemental damage to one foe. Depends on Attack & Magic. 敵1体に　中程度の暴属性ダメージ こうげきまりょく値によってダメージ量変化
Battle description	Rude Damage 暴属性 ダメージ	Red Damage 赤属性 ダメージ	Heal All 30 HP 全員30HP 回復
Cost	125 (50% TP)	0 (0% TP)	0 (0% TP)
Target type	Enemy	Enemy	None
Use text	* ~1 cast RUDE BUSTER! ＊ ~1は&　 ルードバスターを発動した！	* ~1 used RED BUSTER!	* ~1 cast DUAL HEAL!
Notes	Very similar to Rude Buster, though with a few differences. Rude Sword does not take magic into account (despite the description), resulting in lower damage than Rude Buster. Unlike every other spell, Rude Sword has a different name in-battle. Also worth noting is Rude Sword's use text; similar though not quite identical to Rude Buster's * ~1 used RUDE BUSTER! (the Japanese text is identical to the used version). This spell uses the otherwise-unused animation spr_attack_mash1 (see below). Rude Sword can be cast (as "Dual-Buster") in the fight with the unused enemy monster1. Rude Sword's full description in English is identical to Rude Buster's, though the description in Japanese is slightly different; cf. the used version (which removed a space, added a 。, and slightly changed some text): 敵1体に中程度の暴属性ダメージ。 こうげきまりょく値によりダメージ量変化。	These spells are not technically unused, though they can only be cast via ACT options in the King fight; they are never actually directly available as spells. As a result, the names, descriptions, and costs of the spells are left unused. Their use text is not unused.

Additionally, the spell Heal Prayer has behavior defined for the overworld, where it will heal a party member by 100 HP – in the final game, TP is set to 0 at the end of a battle, making it impossible to cast spells in the overworld and thus leaving this behavior unused.

(Source: Original TCRF research)

Unused Rooms

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: room_empty, room_DARKempty, room_battletest

• Room 4, room_torroom, is an empty (all-black) room. Assumedly it would be Toriel's room in her house, but the door is locked.
• Room 7, room_town_northwest, is an empty black room as well. It was presumably the area behind the closed-off gates within the town.
• Room 11, room_town_apartments, is an empty black room as well, though larger than room_torroom. It may have been for the apartments in the town, which cannot be entered.
• Room 131, PLACE_DOG, is the dogcheck room. If you edit your save file to start in a room number lesser than 1 or greater than 130, you will instead be taken to this room, where a sleeping dog serenades you with chill music.

(Source: Original TCRF research)

Unused Graphics

See also: /Unused Enemies and Encounters#Ralsei

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: spr_checkers_idle_white Tilesets

To do: Unused sprites that are identical to their used versions:spr_chainking_toss_old, spr_face_jock1 through spr_face_jock8 (🤔), spr_face_king[7], spr_hammerguy_powerup_old, spr_jigsawry_wounded, spr_king_liftlancer_old, spr_susie*_party, spr_tile_darkgrass_old

Dark World

Ralsei's Manual

• 
• 
• 
• 
• 
• 
• 
• 

Textures that appear to be of the manual given to you by Ralsei at the beginning of the game; but this time, it's actually readable. This appears to have been cut earlier in development, as evidenced by the several notable differences between its contents and the final demo:

• The game's keys were not going to be rebindable; this is evident in the 'CONTROLS' section, as well as the 'ATTACKING' section.
• There was going to be a 'TALK' button in the overworld menu, allowing you to talk to the other members of your party at any point.
• There was not going to be a SPARE button in-battle. Instead, the 'ACTING' section indicates that you would have had to turn all enemy names yellow, at which point the battle would automatically end.
• There was some kind of in-battle dog button. Unused sprites for this button are present, indicating that it was likely going to appear in-game, probably as an easter egg.
• Attacking was going to require a different button to be pressed for each character; aside from making things quite a bit harder, this would not have meshed well with key rebinding.
• TP was not going to be discarded after a battle, and could be restored at SAVE points. Because of this, spells could be cast in the overworld. Also, on a more minor note, the 'POWERS' button was renamed to 'POWER'.

There is no Japanese-language version of the manual. Also notable is that the attack bar graphic in the ATTACKING section is a placeholder complete with a rough icon of Kris, in style with the rest of the placeholder graphics.

There is also unused functionality for the manual in the form of the object obj_ralseibook; the manual can be restored in-game by modifying the 'use item' script to create an instance of this object:

(Source: Original TCRF research)

Early Trees

Early	Final

Early, more diversely-coloured but less pretty versions of the trees that appear throughout the game.

(Source: Original TCRF research)

Early Purple/Dark Grass

Early	Final

Early version of the grass in the Field of Hopes and Dreams.

(Source: Original TCRF research)

Sleepy Rudinn

"Tired" overworld sprites for Rudinn.

(Source: Original TCRF research)

Complete Timer

The timer for the glow-tile puzzles, with the arm having completed a full revolution. In-game, the timer immediately switches to its 'off' sprite when this happens.

(Source: Original TCRF research)

Broken Box

A broken block that would have been used in the box puzzle, in particular circumstances.

(Source: Original TCRF research)

Pink Flame

A pink flame that would have appeared in the Scarlet Forest, if its sprite name is to be believed.

(Source: Original TCRF research)

Vandalized Clubs Icon

A vandalized version of the clubs icon; the other three vandalized suits are used in the Clover suits puzzle.

(Source: Original TCRF research)

Early Malius Animation

Early	Final

An earlier, somewhat more MS Paint-esque version of Malius's swinging animation.

(Source: Original TCRF research)

Lancer w/ Mustache

Lancer with a mustache, facing right. A left-facing version of this sprite is used in the Thrash Your Own Ass room, though this right-facing version is not. Even when leaving the room to the right, he continues to face left.

(Source: Original TCRF research)

Early Starwalker Bell

Early	Final

An earlier, placeholder version of the bell used to dispel the Starwalker.

(Source: Original TCRF research)

Elevator Floor Numbers

A set of floor numbers clearly intended for a Card Castle elevator. Note that they include the prison, though do not include a floor 5 (where the shop, SAVE point, and elevator are in the final game).

(Source: Original TCRF research)

Small Dialogue Portraits

More wonderful faces. These are used as placeholders for the 'small' dialogue portraits used for Susie before the second K.Round fight. The art style (and quality) of Ralsei's portrait closely resembles Toby's concept art of him.

Rather interestingly, the portrait for Ralsei here is prefixed with an a, rather than an r (as all of his other portraits are). Also perhaps of note is how Ralsei and Susie's faces are colored – Ralsei's face is in black and white, as is normally the case with Lightner characters (though Ralsei is a Darkner), whereas Susie's face is colored, as is normally the case with Darkner characters (though Susie is a Lightner). This is reversed from their usual face sprites, though it is entirely possible that this is just a coincidence.

(Source: Original TCRF research)

spr_joker_dance_reverse

Jevil dancing, facing... backwards. It might have been intended for Jevil's final stage where he can be pacified and there are many "ghost" Jevils surrounding him.

(Source: Original TCRF research)

Old Devilsknife

Early	Final

An unused, probably placeholder earlier version of Jevil's 'scythe' bullet. This older version has an associated bullet object, which is used by the unused bullet patterns 55, 56, 57, and 58.

(Source: Original TCRF research)

King of Spades

An unused overworld sprite for the King, presumably intended for the cutscene immediately before the battle. Note the discolored spade. The 'blue' in this sprite is also a slightly different shade to the blue in the used sprites.

(Source: Original TCRF research)

Fountain Cutscene

White silhouette sprites are used for Kris and Susie during the fountain cutscene (albeit with some real-time embellishment). However, the above sprites are not used at any point during the cutscene (or at least not in full, in the case of Susie's right-facing sprite).

(Source: Original TCRF research)

Exasperated Susie

A static sprite of Susie with her head in her hand.

(Source: Original TCRF research)

Blushing Ralsei

If you stand close to Ralsei on the overworld for a few seconds, he will start blushing. However, his normal downwards-facing sprite is used when he is blushing while facing downwards, meaning that although the game will count him as blushing, it will not be visible. Despite this, a blushing downwards-facing Ralsei sprite is present in the game files, suggesting that the aforementioned oddity is probably a mistake.

Furthermore, since Ralsei stops blushing as soon as you move, the full versions of the other blushing walking sprites are left unused.

(Source: Original TCRF research)

Light World

Beach Area

An early sketch of the beach area room_beach exists, in the same style as the unused Lab and Undyne's Room sketches from the previous game.

(Source: Original TCRF research)

Flowershop Lights

An unused Programmer Art™ sprite supposedly depicting some lights, corresponding to the seven flowers in the back room of the flower shop.

(Source: Original TCRF research)

Eyeless Sans

Sans's "eyeless" face sprite from Undertale – he does not have any dialogue in this game that uses this face.

(Source: Original TCRF research)

Catty Face

An unused face sprite for Catty.

(Source: Original TCRF research)

Toriel Faces

Unused Toriel face sprites from Undertale.

Additionally, Toriel's glasses are present, which would (and should) be added over Toriel's face sprite when she's wearing glasses. They are unused, despite the fact that Toriel's overworld sprites indicate that she wears glasses for the entire game.

(Source: Original TCRF research)

Kris Sliding

An unused downwards sliding sprite for Kris in the 'light' world – there is nowhere in the light world that Kris can slide. Even if the game is loaded to be using the light world sprite for Kris in the dark world, their dark world sliding animation will be used instead.

(Source: Original TCRF research)

Early Ending Sequence

Early	Final

Early	Final

Earlier, slightly less gruesome versions of the sprites in the ending cutscene still exist, under spr_dkris_grabheart_old and spr_dkris_pullheart_old. In general, the old versions lack shading that the final ones do. Kris has less bedhead in their early sprites, and they all lack the stripe on their shirt.

(Source: Original TCRF research)

Also present is an unused up-right standing/walking sprite (a different up-right sprite is used when Kris reveals their knife, and they never walk in that direction).

(Source: Original TCRF research)

Susie with Eyes Visible

Susie's Light World sprites with her eyes visible. These were presumably intended to be used after Kris and Susie return from the Dark World, though her normal sprites are used instead.

(Source: Original TCRF research)

Alphys

Alphys walking/talking upwards; she does not do so at any point in the game.

(Source: Original TCRF research)

Berdly

Berdly facing downwards (standing/talking); he does not face downwards at any point in Chapter 1.

(Source: Original TCRF research)

Sans Walking

A complete set of facing/walking sprites for Sans. In Chapter 1, he remains in a single place facing downwards (or left or right if you talk to him from those directions), leaving the upwards sprite and the rest of the used sprites unused.

(Source: Original TCRF research)

Undyne

Undyne facing/talking to the right and left. In-game, she is between two cars that prevent you from being able to talk to her from those directions.

(Source: Original TCRF research)

Hots Fireguy

Unused sprites for Heats Flamesman Hots Fireguy. The sprite names seem to indicate that they were going to appear in Hometown during the car ride at the beginning of the game.

(Source: TheSpicyPickle123)

Interface

Talk Button

The overworld talk button detailed in Ralsei's manual, along with its associated caption in English and Japanese.

(Source: Original TCRF research)

Downwards Ability Icon

An unused icon for a weapon/armor ability. A diagonal-downwards arrow is used for the Devilsknife, though no weapon or armor, used or otherwise, specifies this particular image as its ability icon.

(Source: Original TCRF research)

Unused Turn UI

Unused UI elements for indicating whose turn it is.

(Source: Original TCRF research)

Textless Fight Buttons

Early	Final

Earlier versions of the FIGHT, ACT, and ITEM buttons in the battle menu, notably lacking their associated captions.

(Source: Original TCRF research)

Dog Button

A battle interface button depicting a dog with both a regular and a highlighted version. This button can also be seen in the unused manual, where the caption explains "A dog has eaten your commands. You can't do anything for the rest of your life.".

(Source: Original TCRF research)

Attack Buttons

The left halves of these sprites are used in-game, but the right halves are covered by another sprite that simply says "PRESS". The unused parts indicate that originally, as shown in Ralsei's manual, each character would have required a different button to be pressed to attack. This is more complicated than the final version, which simply requires the 'use' button to be pressed for each character. Also note that this old system clearly predated key rebinding, which it would not have meshed well with.

(Source: Original TCRF research)

Target Triangle

Some kind of triangular targeting reticule.

(Source: Original TCRF research)

Unused Attack Effects

Two unused attack effect animations. The first, spr_attack_mash1, is used by the unused spell Rude Sword (spr_attack_mash2 is used for Susie's normal attacks). The second, spr_attack_hit1, is completely unused, and, curiously, is yellow (the other attack animations all match the colors of their characters, and there is no 'yellow' character).

(Source: Original TCRF research)

Heal Effect

Early	Final

An earlier, clearly placeholder version of the 'healing' sparkle effect; the final version is just a recolored version of the 'spare' sparkle effect.

(Source: Original TCRF research)

Sword Effect

A 'sword' sparkle effect, similar to the spare/heal effects. It is unclear what this would have been used for. Also note that it may have been displayed in a different color.

(Source: Original TCRF research)

Guts

Guts. An unused "battle message" sprite (like the "Max"/"Up"/"Down" messages that sometimes appear when healing/taking damage in particular circumstances). It is possible that it would have appeared in a color other than white (like the other battle messages).

(Source: Original TCRF research)

Early Kris Attack Animation

Early
Final

An older version of Kris's attack animation is present as spr_krisb_attack_old; its first frame was removed in the final version.

(Source: Original TCRF research)

Unarmed Susie Animations

idle	attackready

Alternate 'unarmed' variants of Susie's idle and ready-to-attack animations. There is also an unarmed version of her attack sprite, which is used, when Susie throws Ralsei in the second K.Round fight.

These three sprites are also used instead of the normal ones if Susie has no weapon during a battle, which is not possible. Note that there are no unarmed variants of Susie's ready-to-spellcast, spellcasting, acting, defending, hurt, unconscious, or victory animations, all of which show Susie with her axe.

(Source: Original TCRF research)

Editor Sprites

Returning from Undertale, these mark where various events, doors, and other invisible objects are located.

• 

  interactable

• 

  doorA

• 

  doorB

• 

  doorC

• 

  doorD

• 

  doorE

• 

  doorF

• 

  doorX

• 

  doorW

• 

  event

• 

  markerA

• 

  markerB

• 

  markerC

• 

  markerD

• 

  markerE

• 

  markerF

• 

  markerX

• 

  markerW

(Source: Original TCRF research)

Solids

Invisible wall sprites, in various shapes and sizes. The sprites suffixed by "dark" are twice the size (as is every sprite in the Dark Realm).

• 

  solidextall_2

• 

  solidexwide

• 

  solidlong

• 

  solidsmall

• 

  soliddark

• 

  solidenemy

• 

  solidenemy_b

• 

  solidsmallthin

• 

  solidtall

• 

  solidwide

• 

  solidblock

• 

  diagonalsolid

• 

  soliddiamond

• 

  solidcircle

• 

  sdl

• 

  sdl_dark

• 

  sdr

• 

  sul

• 

  sur

• 

  sur_dark

(Source: Original TCRF research)

Controller Objects

This needs some investigation. Discuss ideas and findings on the talk page. Specifically: What exactly are the 84_* scripts, and what exactly does the 84_lang_helper object do?

"Musicer" objects are (unseen) objects that control music playback in certain areas. This sprite is used for those objects (likely to make them easily-identifiable in the room editor).

This is the sprite used by obj_84_lang_helper, another unseen controller object. It appears wherever an English-language background sprite should be swapped for its Japanese equivalent (such as the Librarby, or Seam's shop). 8-4 Ltd. is listed in the credits for Deltarune under "Japanese Localization".

(Source: Original TCRF research)

obj_npc_facing

This sprite, spr_placeholder, is the default sprite of the object obj_npc_facing, which is used for most NPCs capable of facing different directions (hence the name). The sprite is likely present simply to make these objects identifiable in the editor – it is changed to an NPC's sprite upon creation.

(Source: Original TCRF research)

Miscellaneous

Placeholder Kris Sprite

An unused placeholder sprite for Kris, named spr_krisplace. It's used as the "default" sprite for hero game objects, while programming from the parent object tells the game which party member uses what sprites.

(Source: Original TCRF research)

spr_mainchara

Placeholder red square. Interestingly enough, spr_mainchara was the filename for Frisk's sprites in Undertale.

(Source: Original TCRF research)

Placeholder Tiles

Generic placeholder tiles.

(Source: Original TCRF research)

Sleeping Dog

A sleeping Pomeranian that appears in the "dogcheck" room, where you are taken if you attempt to warp to a room number below 1 or above 130 with save file editing. It does have some sweet music, though.

Debunked rumors

From somewhere, an administrator...

Hi, note from your friendly administrator Xkeeper (talk) here. This section won't stay around for too long, but as this game is still under active research, I wanted to list some things that are not unused content, or otherwise rumors about the game. This section'll be removed at some point in the near future, once things have settled down.

• While the game checks the system time, this is something all GameMaker Studio games do, and is not used in any way by the game itself.
• The game does not check for the presence of an Undertale installation. Accordingly, it also does not check if a save file for such exists.
• april_2012.ogg is from an old project that Toby contributed this music to.
• The references to "unusedclassroom" in the files is to a location in the story; it is not actually unused. (Contrast to the UNUSED text above, which does appear to be unused.)

This is a non-exhaustive list, but as people are currently doing research, I thought it would be helpful to mark some of the dead-ends. --13:46, 2 November 2018 (EDT)