This mod adds 10 weapons inspired by Deltarune and Undertale games made by Toby Fox.
-Justice axe
-Spear of justice
-Hammer of justice
-Jevil scythe
-Black knife
-JARONA sword
-Lancer bike
-Real knife
-Burnt pan
This mod also adds Shadow crystal crafting material, which drops from most hostile mobs, which let you craft most of Mod weapons.
If you want to add some new interesting weapons to your world this mod is for you
Because Justice axe do not show in JEI crafting and I am too lazy to add it manually I just write it here that Justice axe is crafted by brewing iron axe with moss block.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 Modrinth — 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 undertale_weapons-1.1.0-neoforge-1.21.1.jar — drop this file into the mods folder
- Download size: 2.3 MB
- Download link checked 6 Sept 2026 — working
These come from our own check of the pack file, not from the source page.