

Add-on updated to version 2
1) The mob no longer spawns in the world
2) The assassin now attacks only the player and villagers
3) Knife crafting recipe removed
4) Knife attack damage increased from 3 to 5
5) Assassin attack damage increased from 3 to 5
6) The mouse can now break all types of leaves, glass, and glass panes
7) Sword durability reduced from 600 to 55
I created a small add-on featuring a killer mouse.

List of additions in the add-on:
1) Killer Mouse: the only mob added in this expansion; it spawns at night throughout the Minecraft world and has 100 hearts of health and an attack power of 3. It features many unique animations and sounds.
2) Knife: after killing the mouse, it drops a knife that can be used for defense :)
That’s everything this small add-on adds. I hope you like it.
Quick facts
- Edition: Minecraft Bedrock
- File type: .mcpack or .mcaddon
- Minecraft versions listed: 1.21.101, 1.21.111, 1.21.114
- How to install: Download the .mcpack or .mcaddon file. → Open it — Minecraft imports it. → In your world: Behavior Packs → Available → Activate, then the same under Resource Packs.
- 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 Bedrock addons & mods walks through it step by step.
Verified by MCModsHub
- Pack type: .mcaddon — behaviour and resource pack in one file
- Manifest requires Minecraft 1.17.0 or newer
- Complete pack — everything it depends on is inside the file
- Download size: 177 KB
- Download link checked 7 Sept 2026 — working
These come from our own check of the pack file, not from the source page.