Undertale modded
Java mod listed for Minecraft 1.17–1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader







[currently not updating it. On hiatus cause: Structure blocks brain hurts from learning them]
This mod is based on the game Undertale by Toby Fox. This mod contains new items, tools, blocks, structures, painting, armour, weapons, villager/wandering trader trades and advancements. Most of the items, food, weapons, advancements and tools contain flavor text.
* When using commands the name of the file is ---> testmod <--- so any give and locate command uses this instead of minecraft.
* Most recipes are in the crafting book.
* Check the images for a preview of the mod.
* Decoration blocks are crafted in the stone cutter with amalgamation ingots.
* Because of how MCreator works i can't go back once i update my mod to a newer version of Minecraft so older version will not be updated with new stuff.
* Allom tools require netherite or any modded tool with equal level to mine, to upgrade to allom tools you use the smithing table with a allom smithing template.
* Of note: If you just want the mod with none of the survival aspect's and more leaning towards Undertale mechanics then go check out my other project: Undertale Modded Props. <--(not been updated in a while)
* (the end goal of every adventure is to have fun)
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.20.1, 1.18.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as Undertalemod-1.17.1-1.8.1.jar — drop this file into the mods folder
- Download size: 191 KB
- Download link checked 25 Sept 2026 — working
These come from our own check of the pack file, not from the source page.