SlimeSnowball is a fun and lightweight server-side plugin for Minecraft 1.21.4 that lets you throw slimeballs to slow down your enemies — just like snowballs, but stickier!
When a player throws a slimeball, any mob or player hit by it will receive Slowness III for 10 seconds. This adds a tactical twist to PvP, minigames, or even PvE situations.
Features:
Throw slimeballs like snowballs
Hit entities are slowed with Slowness III for 10 seconds
Works on both players and mobs
No client-side mods required — fully server-side
Perfect for PvP arenas, kit-based minigames, or survival servers
No commands — just throw slimeballs as you normally would!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.4
- 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 SlimeSnowball-1.21.4.jar — drop this file into the mods folder
- Download size: 6 KB
- Download link checked 14 Sept 2026 — working
These come from our own check of the pack file, not from the source page.