ModsJava
mega undertale
Java mod listed for Minecraft 1.19–1.20. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
-new armors
-3 biomes
-2 dimensions
-new tools
-2 bosses
-3 villagers
-new mobs
weapons:
-toy knife damage 6
-Tough Glove damage 8
-real knife damage 176
-real real knife damage 1001
-bone damage 12
-sans bone damage 51
armor:
-old tutu 10 defense
-the heart locker 15 defense
-temmie armor 105 defense (chsplate:40, leggings:35, boots;30)
mobs:
-sans
-papyrus
-human
-flowey
-tem
bosses:
-chara
-sans genocide
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.19.4, 1.20.1
- 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.
File checked by MCModsHub
- Ships as megaundertalerelease1.jar — drop this file into the mods folder
- Download size: 12.9 MB
- Download link checked 27 Sept 2026 — working
These come from our own check of the pack file, not from the source page.