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CurseForge · Minecraft mod
Undertale Additions
Items, weapons and armors from Undertale!
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Undertale Additions release should I use?
Latest stable file undertale additions 1.1.2 forge 1.20.1
Game version 1.20.1
Loader Forge
undertale additions 1.1.2 forge 1.20.1 targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Undertale Additions required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source does not explicitly classify this release as client-only or server-only.
What else does undertale additions 1.1.2 forge 1.20.1 need?
undertale additions 1.1.2 forge 1.20.1. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Undertale Additions without breaking your instance.
Built for undertale additions 1.1.2 forge 1.20.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use undertale additions 1.1.2 forge 1.20.1. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside undertale additions 1.1.2 forge 1.20.1. It opens that exact file at the source.
About this project
What does Undertale Additions add?
A mod created using MCreator of the popular game Undertale!
Undertale additions brings the iconic items from Undertale breaking the barrier between Minecraft and this incredible game with great 3D models! (and some extras too)
Features
All Weapons
All Foods
All Blocks
Armors
miscellaneous
Coming soon
Port for other versions and loaders
Q&A
Will things be the same as in the game or will there be changes?
-Items will have slight changesItems can be crafted or can only be obtained trough creative mode?
-All items will have their recipe, some items that are not in the game will be added for some recipes
Dependences
-None required
Credits
Toby Fox - Creator of UNDERTALE, this mod is a fan project inspired by his work
Note - Deleting this mod could cause problems for the world
Project description from CurseForge.
Pick your setup
Undertale Additions by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Undertale Additions versions and loaders
undertale additions 1.1.2 forge 1.20.1
undertale_additions-1.1.2-forge-1.20.1.jar
6 Nov 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
undertale Additions 1.1.2 Neoforge 1.21.1
undertale_stuff-1.1.2-neoforge-1.21.1.jar
1 Nov 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup NeoForge1.21.1 release
undertale Additions 1.1.1 Neoforge 1.21.1
undertale_stuff-1.1.1-neoforge-1.21.1.jar
15 Oct 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup NeoForge1.21.1 release
undertale_additions-1.0.1-forge-1.20.1.jar
5 Oct 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
undertale_additions-1.0.1-neoforge-1.21.1.jar
undertale_stuff-1.0.1-neoforge-1.21.1.jar
20 Sept 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup NeoForge1.21.1 release
undertale Additions Release
undertale_stuff-1.0.0-neoforge-1.21.1.jar
10 Sept 2025
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup NeoForge1.21.1 release
Looking for an older file? The official CurseForge project page is in Resources.
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