CurseForge · Minecraft mod
Bacteriums
Bacterium Mod For Fabric and Forge
Quick answer
Which Bacteriums release should I use?
Bacteriums [neoforge 1.21.9] v1.0.8.1 targets 1.21.9 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Bacteriums required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Bacteriums [neoforge 1.21.9] v1.0.8.1 need?
[neoforge 1.21.9] v1.0.8.1. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Bacteriums without breaking your instance.
Built for Bacteriums [neoforge 1.21.9] v1.0.8.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use [neoforge 1.21.9] v1.0.8.1. It targets 1.21.9 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside [neoforge 1.21.9] v1.0.8.1. It opens that exact file at the source.
About this project
What does Bacteriums add?
Bacterium Mod
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Genetically engineered bacteria to eat parts of or all of your world. Destroy all the sand in a desert, or just turn it all into grass.
Either way you want to go, be careful with these powerful bacteria colonies.
First make it

Then, put it underwater, and wait…

Then, break it…

It can make many things…

Project description from CurseForge.
Pick your setup
Bacteriums by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.2
3 loader builds26.1.2
3 loader builds26.1.1
3 loader builds26.1
3 loader builds1.21.11
3 loader builds1.21.10
3 loader builds1.21.9
3 loader builds1.21.8
3 loader builds1.21.7
3 loader builds1.21.6
3 loader builds1.21.5
3 loader buildsShowing the newest 12 of 16 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Bacteriums versions and loaders
[neoforge 1.21.9] v1.0.8.1
bacterium-neoforge-1.21.9-1.0.8.1.jar
11 Oct 2026
[forge 1.21.9] v1.0.8.1
bacterium-forge-1.21.9-1.0.8.1.jar
11 Oct 2026
[fabric 1.21.9] v1.0.8.1
bacterium-fabric-1.21.9-1.0.8.1.jar
11 Oct 2026
[neoforge 1.21.10] v1.0.9.1
bacterium-neoforge-1.21.10-1.0.9.1.jar
11 Oct 2026
[fabric 1.21.10] v1.0.9.1
bacterium-fabric-1.21.10-1.0.9.1.jar
11 Oct 2026
[forge 1.21.10] v1.0.9.1
bacterium-forge-1.21.10-1.0.9.1.jar
11 Oct 2026
[neoforge 1.21.4] v1.0.3.3
bacterium-neoforge-1.21.4-1.0.3.3.jar
11 Oct 2026
[forge 1.21.4] v1.0.3.3
Bacterium-forge-1.21.4-1.0.3.3.jar
11 Oct 2026
[fabric 1.21.4] v1.0.3.3
bacterium-fabric-1.21.4-1.0.3.3.jar
11 Oct 2026
[neoforge 1.21.11] v1.0.10.1
bacterium-neoforge-1.21.11-1.0.10.1.jar
11 Oct 2026
[forge 1.21.11] v1.0.10.1
bacterium-forge-1.21.11-1.0.10.1.jar
11 Oct 2026
[fabric 1.21.11] v1.0.10.1
bacterium-fabric-1.21.11-1.0.10.1.jar
11 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.