Delta Discs
by Saewin
Delta Discs adds 49 music discs from Undertale and Deltarune, craftable through a data pack that leaves vanilla recipes in place.
What it does
The mod ships as a data pack and a resource pack, and both are needed for the discs to work fully. The data pack supplies crafting recipes for a set of songs from both games, among them Once Upon Time, Home Music Box, Spear Justice, Battle Against True Hero, Another Medium and Spider Dance. Vanilla recipes are left untouched, and the resource pack supplies the disc textures.
Only the server needs the data pack to run, while players may add the resource pack to see the new disc textures. Files are published for Fabric, Forge, NeoForge and Quilt, and the data pack variant is listed on its own. Builds exist for 26.2 and 26.3, with 26.3.0+mod for 26.3 as the latest file, released 2026-09-25. The code is not open source, and the mod is released under All rights reserved.
Key features
49 crafted music discs
The pack adds 49 discs from the Undertale and Deltarune soundtracks, each crafted from recipes in the data pack.
Recipe book entries
Players learn the new recipes through the crafting book after they obtain a music disc, so the recipes are not guesswork.
Recipes added over time
Further recipes for more songs are planned for later releases, and each new release adds to the set.
Two installation options
The mod can be used as a data pack or as a resource pack version, and both files are needed together for the full experience.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: The mod suits server owners who want Undertale and Deltarune music available to players, and players on those servers who want to craft the discs themselves.
Questions
Does Delta Discs need to be installed on the client?
Does Delta Discs need both the data pack and the resource pack?
Which game versions does Delta Discs support?
In the catalog
Delta Discs is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
Important: Delta Discs is available in two ways: as a mod, or as a data and resource pack. if you are using the data/resource pack version, make sure you download and install both the data pack and the provided texture pack. Delta Discs is a data pack that adds crafting recipes for 49 songs from Undertale and…
Official listing
- Modrinth page
- modrinth.com/mod/delta-discs
- Owner
- Saewin
- Published
- 2026-09-09
- Updated on Modrinth
- 2026-09-25
- Facts verified
- 2026-10-15