How do I install StackMob Fabric?

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. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does StackMob Fabric work with?

The listing gives Minecraft 1.21, 1.21.1. This is the version stated by the author or source site, not something we verified ourselves.

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StackMob Fabric

by VoxelBuster · on Modrinth

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 1.21.2–1.21.3Newest
Minecraft 1.21–1.21.1
Minecraft 1.20.4

⬇ Download for 1.21.2–1.21.3 ⬇ Download for 1.21–1.21.1 ⬇ Download for 1.20.4

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.

Open in MC Java Mods Get it on Google Play →

StackMob Fabric

A mod that allows players to stack massive amounts of mobs into a single entity. Reduces lag without breaking mob farms.

Inspired by Nathat23's StackMob 5 for Spigot.

Mod Requirements

Fabric API
Cardinal Components API
Cloth Config API

Optional

Mod Menu

License

GNU General Public License v3.0

Contributing

Fork the repository on the platform of your choice, and make a merge request when finished. Please make your MR for the dev branch. Keep your code clean and optimize your imports. I reserve the right to reject MRs on the basis of poor code quality.

Issues

Please submit all issues and bug reports to the issue tracker Include your logs and modlist.

Mod Conflicts

These mods have been confirmed to conflict with this mod. Make sure you have removed these conflicting mods before submitting an issue report.

Clumps : provides similar functionality and creates a data race with StackMob's event handlers

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21, 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.

Verified by MCModsHub

Ships as stackmob-fabric-1.2.2.jar — drop this file into the mods folder
Download size: 63 KB
Download link checked 31 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

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All Mods for Java All Minecraft Java mods Java mods for 1.21