Undertale Stuff
by Catperson6
Undertale Stuff brings an Undertale-themed set of blocks, entities and items into NeoForge 1.20.4, and it includes a survival challenge based on the game's Chara fight.
What it does
The mod adds basic structures and building blocks, along with additional entities and a new item category. Its content follows the look of the game series, so builds and mobs match its style. Its author describes it as a simple mod, and it is not tied to any other mod in the catalog.
The mod runs on NeoForge only, for the single game version 1.20.4. Client and server must both run it, so every player on a server needs it too. It is released under the MIT License and is not open source. The latest NeoForge file is 1.1.0 for 1.20.4, published 2024-06-18, and the mod first appeared on 2024-06-13.
The author notes a survival challenge in which the player kills Chara twice in a row without healing. Snapshot builds are not part of the release.
Key features
Themed blocks
Basic structures and building blocks follow the look of the game series, for building rooms and scenes.
Additional entities
New mobs are added to the world, extending the mod's themed content.
New item category
A separate item category groups the mod's themed items together in the creative inventory.
Chara survival challenge
A survival challenge asks players to kill Chara twice in a row without healing, testing endurance in a fight.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Themed survival builds
Players can use the themed structures and blocks to decorate a survival base in the style of the game.
Challenge runs
Players who want a hard fight can take on the Chara challenge in survival mode.
Who it’s for: Players who want themed blocks, mobs and items in NeoForge 1.20.4, and server owners who want the same content on a multiplayer server.
How it compares
Undertale Additons is a Forge and NeoForge mod for 1.20.1 – 1.21.1 with a client and server environment, under All rights reserved and not open source. FxUndertale is a NeoForge mod for 1.21.1 with the same environment, released under the MIT License and open source. UNDERTALE WORLD is a NeoForge mod for 1.21.1 with the same environment, also under the MIT License and open source. Undertale Stuff differs in being built for 1.20.4 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Undertale Stuff | NeoForge | 1.20.4 | Client and server | 2024-06-18 |
| Undertale Additons | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-07-19 |
| FxUndertale | NeoForge | 1.21.1 | Client and server | 2026-05-02 |
| UNDERTALE WORLD | NeoForge | 1.21.1 | Client and server | 2026-05-01 |
Questions
Which loader does Undertale Stuff use?
Does the server need Undertale Stuff?
Which game version does Undertale Stuff support?
In the catalog
Undertale Stuff is one of 7,216 Magic mods on ModsFinder, and one of 2,992 Magic mods for NeoForge. 13,907 mods support Minecraft 1.20.4.
More from Catperson6
Similar mods
What the author says
CHALLANGE FOR TRUE GAMERS: Kill Chara in survival mode twice in a row without healing. Determination | achievement (root achievement for this mod) Human Soul | item (Determination (not the achievement) can be extracted from it and made into a serum using a brewing stand) Undertale Stuff | creative tab (contains the…
Official listing
- Modrinth page
- modrinth.com/mod/undertale-stuff
- Owner
- Catperson6
- Published
- 2024-06-13
- Updated on Modrinth
- 2024-06-18
- Facts verified
- 2026-10-15