Undertale Additons
Items, weapons and armors from the popular game Undertale!
Screenshots
About this Mod
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 changes
- Items 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
Note
- This mod is currently under active development, several things will be added or changed in the future
Credits
- Toby Fox - Creator of UNDERTALE, this mod is a fan project inspired by his work
Available Versions
How to Install Undertale Additons on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Undertale Additons". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Undertale Additons server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Undertale Additons compatible with forge and neoforge?
Undertale Additons officially supports forge, neoforge for Minecraft 1.21.1, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Undertale Additons – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Undertale Additons consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Undertale Additons with just one click on your server.