Gaster, Creator of Deltarune (Analysis/Theory) @DoubleDan_Dev

DoubleDan W.D. Gaster is a vital force in Deltarune, but it’s hard to put his exact involvement in the game into words. This is what I set out to do. In this video, I explain Gaster’s connection to Deltarune starting with his background from Undertale and how it all connects to his role as a creator. Enjoy!

All rights to Deltarune and its music belong to Toby Fox and the Deltarune Team.

If you have any questions or want to share your opinion, write them in the comments and I can try to share my thoughts. Please try to be respectful and understanding of differing opinions or theories.

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Credits/Sources:
• Deltarune - Toby Fox (and the Deltarune Team)
• Footage - My footage, Merg, arcesus, gardirus1, The Irken Luxray, Grasshyren, Damian
• Music - Deltarune OST, OMORI OST, Cozy Hour (me)
• Others - Remember Son Meme (@uteaba on Tiktok), Wing Gaster Meme (Beethovenus on YouTube), Gaster’s motif in the disappear sfx (@nexketch_ on Twitter), Everything About Gaster’s Motif (Andrew Cunningham on YouTube)
• The Gaster Art In The Thumbnail And Throughout The Video - me

Timestamps:

INTRODUCTION - 0:00
UNDERTALE BACKGROUND - 2:19
BEGINNING DELTARUNE - 7:46
THROUGHOUT DELTARUNE - 12:07
GASTER CREATED DELTARUNE - 20:41
GASTER AND THE PLAYER - 24:16
AN ENDING - 27:55

#deltarune #undertale #gaster #theory

updated 11 months ago

Gaster, Creator of Deltarune (Analysis/Theory)

DoubleDan 2025-10-05 | W.D. Gaster is a vital force in Deltarune, but it’s hard to put his exact involvement in the game into words. This is what I set out to do. In this video, I explain Gaster’s connection to Deltarune starting with his background from Undertale and how it all connects to his role as a creator. Enjoy!

All rights to Deltarune and its music belong to Toby Fox and the Deltarune Team.

If you have any questions or want to share your opinion, write them in the comments and I can try to share my thoughts. Please try to be respectful and understanding of differing opinions or theories.

► Subscribe - http://www.youtube.com/@DoubleDan_Dev?sub_confirmation=1
► Twitter - twitter.com/doubledandev
► Bluesky - https://bsky.app/profile/doubledandev.bsky.social

Credits/Sources:
• Deltarune - Toby Fox (and the Deltarune Team)
• Footage - My footage, Merg, arcesus, gardirus1, The Irken Luxray, Grasshyren, Damian
• Music - Deltarune OST, OMORI OST, Cozy Hour (me)
• Others - Remember Son Meme (@uteaba on Tiktok), Wing Gaster Meme (Beethovenus on YouTube), Gaster’s motif in the disappear sfx (@nexketch_ on Twitter), Everything About Gaster’s Motif (Andrew Cunningham on YouTube)
• The Gaster Art In The Thumbnail And Throughout The Video - me

Timestamps:

INTRODUCTION - 0:00
UNDERTALE BACKGROUND - 2:19
BEGINNING DELTARUNE - 7:46
THROUGHOUT DELTARUNE - 12:07
GASTER CREATED DELTARUNE - 20:41
GASTER AND THE PLAYER - 24:16
AN ENDING - 27:55

#deltarune #undertale #gaster #theory

Paradise, Paradise | Modern Cover (DELTARUNE)

DoubleDan 2025-07-21 | Paradise, Paradise is one of my favourite songs in all of Deltarune! I wanted to create a non-retro unpixelated version of the song that gave me the same vibes as the original, so that's what I did. The art/animation is assembled by me and uses sprites from the UNDERTALE/DELTARUNE Newsletters as well as some assets from Earthbound.

I don't plan on releasing more covers in the future, this probably won't ever become a music channel, but I wanted to at least share THIS one for now.

Original song by Toby Fox.

DELTARUNE Chapters 3+4 OST: tobyfox.bandcamp.com/album/deltarune-chapters-3-4-ost

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#music #deltarune #cover #undertale

The Kris Slash Follow-Up | Deltarune Theory/Analysis

DoubleDan 2025-07-04 | Kris Slash was so nice I had to do it twice. This is a follow-up video to my Kris Slash Theory video, where I presented a theory about Deltarune involving a mysterious cutscene that plays after a certain special boss, sharing an unpopular interpretation and the evidence that supports it. In this video, I go over the many contributions and feedback from the community towards the original video to paint a full picture of the Kris Slash theory.

Meanwhile, I address the allegations that I am bad at evaluating video game boss difficulty by showing just how bad my gameplay can be.

Please don’t target or insult any of the commenters I included in the video, this should be a friendly discussion environment. I included these comments in the video to share the community aspect of this theory’s discussion, not to hyperfocus on any particular comment.

► Original Kris Slash Theory Video: youtube.com/watch?v=IWGPHIbgU5I

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Credits/Sources:
• Deltarune - Toby Fox (and the Deltarune Team)
• Footage/Screenshots - My footage, Kippy
• Music - Deltarune OST, MOTHER 3 OST, Phoenix Wright Ace Attorney OST, OMORI OST, Cozy Hour (me)
• Others - Kris Slash Right-to-Left Diagram ( @87w_UT_DRKris on Twitter ), Dark Fountain Young Sheldon Meme ( @RhythmAsh101 on Twitter )

Intro - 0:00
Kris Slash Recap - 3:07
Corrections from Last Vid - 4:23
Counter-evidence - 7:02
Alternate Interpretations - 9:40
New Supporting Evidence - 16:34
Rapid Fire Round - 20:05
Is Kris Slash True? - 21:33

#deltarune #theory #undertale #krisslash #sans #shadowmantle

Kris Slash Theory (DELTARUNE Analysis)

DoubleDan 2025-06-22 | There’s a cutscene in Deltarune after defeating Chapter 3’s special boss where Susie and Ralsei get SLASHed by someone. But, I think that KRIS is actually the one SLASHing them, not the Roaring Knight. That’s right, this is the KRIS SLASH THEORY.

If you have any questions about this theory or want to share your opinion, write them in the comments and I can try to share my thoughts. Please try to be respectful and understanding of differing opinions or theories.

All rights to Deltarune and its music belong to Toby Fox and the Deltarune Team. Thanks for making such an incredible game!

Check out the Follow-Up video to this: youtu.be/iITIpGxphA8

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Check out my Undertale/Deltarune-inspired Fantasy RPG!
► Another Lux - doubledandev.itch.io/another-lux

Credits/Sources:
• Deltarune - Toby Fox (and the Deltarune Team)
• Footage/Screenshots - My own footage, Merg, Null and Void
• Music - Deltarune OST, Nightmare Knight (Toby Fox), Cozy Hour (me)
• Others - Kris Dark Fountain Young Sheldon Meme ( @RhythmAsh101 on Twitter ), S-Rank Undertale Connection ( @TNIZac14 on Twitter )

Intro - 0:00
Kris and the Knight - 3:37
Kris Slash (S-Rank) - 8:38
Kris Slash (The Scene) - 11:52
Kris Slash (Knighting) - 15:51
Closing Thoughts - 18:37

#deltarune #theory #undertale #kris

I Made a Fantasy RPG Maker Game

DoubleDan 2025-02-09 | I created a video game in RPG Maker to tell a story that had been stuck in my head for years, and this is how it happened.

Play Another Lux here: doubledandev.itch.io/another-lux

Another Lux is a fantasy RPG made in RPG Maker MV which features Undertale-inspired bullet hell combat. You can witness the formation and adventures of a small party of heroes that fight against dark and malevolent forces in a story loosely inspired by a D&D campaign. This isn’t a technical video on using RPG Maker, I mostly just wanted to share the different new experiences that I went through when creating the story and developing the game.

Check out the additional promo vid I made for Another Lux here: youtube.com/watch?v=faAsqpRkGxg

Check out the Soundtrack for Another Lux here: youtube.com/playlist?list=PLqg6XmMvyi4c0hoXkfazdz9Ty0zCkm2lG&si=Q6jGikNq6_EHvWc5

Sources (videos/music/other) used in this video: docs.google.com/document/d/1nSMkkvwz_epX9XX3qIO_pBSrS7oFRPtPHpfSkV0KXUA/edit?usp=sharing

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Introduction - 0:00
Choosing a Medium - 0:31
Game Design - 3:32
Combat - 4:30
Art - 5:37
Music - 6:38
Demo Aftermath - 7:17
The End - 8:04

#indiedev #gamedev #rpg #rpgmaker

Emperor of Night - Another Lux OST

DoubleDan 2025-01-03 | Another Lux original soundtrack - Composed by DoubleDan

Play Another Lux here: doubledandev.itch.io/another-lux

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#ost #gamedev #rpg

Cozy Hour - Another Lux OST

Rose Thorns - Another Lux OST

Royal Judgement - Another Lux OST

Glade Delight - Another Lux OST

Reminiscent - Another Lux OST

clock

DoubleDan 2025-01-02 | This video is additional content for a fantasy indie RPG game I am developing called Another Lux.

Play Another Lux here: doubledandev.itch.io/another-lux

A clock ticks silently, just for you. You cannot see it nor hear it, but you know that it ticks down all the same. Most people live their lives without confronting their clocks, letting it run out and letting time march forwards until their end. What would happen if you did confront your clock? What would be there, waiting for you?

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#indiedev #gamedev #rpg