Name: Toby Fox - UNDERTALE Soundtrack - Unused: Gaster's Theme by MysteryMan65 in Slick's Top 10 AU Gaster's Themes
Duration: 17 s
Description: One of the songs that play in the Sound Test room.

This is tecnically used. It is used in the easteregg of the sound test. Once you select this option, you cannot switch back to any of the other songs until the sound test ends.

Anyone else do the inkling idle animation to this

Darker? I was darker once. I was sent to the void. The enigmatic void. The enigmatic void filled with nothing. And nothing makes me darker. Darker? I was darker once. I was sent to the void. The enigmatic void. The enigmatic void filled with nothing.

[ * 🕆︎☟︎💣︎ ☜︎✠︎👍︎🕆︎💧︎☜︎ 💣︎☜︎ 🕈︎☟︎✌︎❄︎ ❄︎☟︎☜︎ ✌︎👍︎❄︎🕆︎✌︎☹︎ ☞︎🕆︎👍︎😐︎ ✌︎☼︎☜︎ ✡︎⚐︎🕆︎ 👎︎⚐︎✋︎☠︎☝︎ ✋︎☠︎ 💣︎✡︎ ☟︎⚐︎🕆︎💧︎☜︎ ]

what makes this different from the new one?

My top 10 versions of Gaster's Theme. 
Note that despite Soundcloud's numbering system, the #10 pick is actually the one below the original, and the #1 pick is at the bottom. That way it functions like a countdown.

Some rules apply as always:
1. The song has to be for an AU.
2. Covers and takes are allowed, remixes are not.
3. Only one entry per AU. For example, a song and a cover of that same song or alternate version for the same AU could not both be there.
4. Any variations of "!Underswap" (or !Underfell or whatever) all count as the base AU (i.e. Underswap). (Something like Integrity or Undertale: Swapped, however, could coexist on the list)

Slick's Top 10 AU Gaster's Themes

Deltarune Chapter 2 OST - Noelle. [Unused.]

An unused track for Deltarune’s Chapter 3!

“Earlier, we were considering having a stealth-focused section in the game where you would slowly, slowly sneak around certain areas.

After developing some concepts, we realized a mechanic which basically just makes you move slower isn't necessarily fun.

So, we didn't do that...” - Toby Fox

Source: Undertale Newsletter

Sneaky Situation

"I think this is my favorite of the unfinished tracks... At least, it's the one I listened to the most when I was working on the game.

Back when Queen looked more intimidating, I wanted to use this as her boss theme. Personally I still really like it, and I even wanted to try to use it for Berdly's battle instead... but the issue was that it just didn't match either of the theme melodies I had already created for those characters.

Bizarrely, I seem to have made this after already making her theme song, as an early version of her theme song is inside of the project file.

1:30 onward (piano only) is totally unfinished."

(Unused Track) - DELTARUNE Chapter 2 - ♪ Queen Battle (Original)

big angry mouth man
WE ARE OFF

Song by Toby Fox
Artwork By: https://www.deviantart.com/tophatskelle/art/Dedan-OFF-1099996205

OFF REMAKE OST - Fake Orchestra

DELTARUNE Chapters 3+4 (Original Game Soundtrack)

Catswing

Mike is DEFINITELY a scat

music video: https://youtu.be/RcWvuCzFyVo

Catswing [Winterer Cover]

 تکه هایی از خویش، همچون کاشی های شکسته ای که ردی از گذشته در خود دارند اما دیگر تعلقی ندارند.قطعاتی منفرد  که اینک  از خط هویت گذشته جدا شده اند و در دگر-فرمی معنایی دیگر پیدا می کنند.
 


Fragments are short musical pieces that emerge from forgotten parts of the self—memories and sensations carried in body and mind, reawakened in exile or displacement.
These fragments surface in sudden encounters: in the familiarity of a melody, in the strangeness of an unfamiliar city, or in the longing for a home that has become distant, destroyed, or irretrievable.

I imagine them like broken tiles: carrying the texture and touch of the past, but no longer fitting into their original whole. They require a new context—a new collective in which they can belong. My aim is not to restore them to what they once were, but to reveal their transformation, to give them new color and resonance in the present.


Kamancheh: Siavash Mollaeian
mixing engineer: Maziar Bababashi - Studio Allepo - Tehran

Recorded in Paris - Sep 2025

Fragments no.1

One of the songs that play in the Sound Test room.

Toby Fox - UNDERTALE Soundtrack - Unused: Gaster's Theme

Reunited, but played at the same pitch and speed in the game.
Original song by Toby Fox

Toby Fox- UNDERTALE- Reunited (Pitch-Corrected)

Megalos overrated.

I decided to fuck around with Harmor after watching some tutorials and I ended up making this.

Original art in the cover by @kompletekrysys

EDIT: Here's an invite for the HD server
https://discord.gg/Pe6qrvs

[Undertale AU - Harmonic Dysfunctions] The Unknown (Updated)

[Disneytale] The Mad Doctor

*̡͡ ͞S̷̡̧a͢v̶e̴͡ ̧o̢͟n̢ ͏̢ȩv͢͝͡e͏҉̡r̴͝y̛͠t̶̶h͟ì͏n͜g͜͠ ̸in͢ ͜҉Ć̷h̀͡r̡̀i͏́s̕҉t́m̀͏̕a͞s̨͠ ̸͠i̧͘͜n ̕[͏̷͝R̶E̕͟DA̧͝C͏̨ŢĘ̷D̡҉].̴

[Terrible Choices AU] - The Forgotten Month

dogcheck

friendship

Track made by @thetunehero-956661993
thumbnail also by @thetunehero-956661993

join the server!
https://discord.gg/37AubMj

{MultiVersal Mistake} Ost: ???

a relic in time. //

go follow @PnfrlEnm instead

Toby Fox - UNDERTALE Soundtrack - Unused: Gaster's Theme

MysteryMan65

Recent comments

CURLYHAIRDUDE084

Nira

MRT

XANS_v1r@lc0rUpt10n.exe

Related tracks