No-compromises game logic optimization mod, useful for both single-player games and multi-player servers.
Lithium is a resource made by jellysquid3. It supports Minecraft 1.16 – 26.x. It has been downloaded 142,594,676 times on Modrinth. The last update came out on Sep 28, 2026.
How to install Lithium
This mod runs only on your own game. Servers do not need it, so you can use it on any server.
Install Fabric, Quilt and NeoForge for Minecraft 1.16 – 26.x.
Download the .jar file from Modrinth and put it in the mods folder of your .minecraft directory.
Start Minecraft with the Fabric profile.
With the CraftRank Launcher you can skip these steps: open Mods, search for Lithium and click Install.
Compatibility
- Minecraft versions
- 26.x, 1.21, 1.20, 1.19, 1.18, 1.17, 1.16
- Runs on
- Fabric, Quilt, NeoForge
- Where it runs
- Client only (your game)
- Edition
- Java
- Needs
- Nothing else
- License
- GPL
- Price
- Free
- Upkeep
- Actively updated (Oct 25, 2026)
Lithium compared with similar ones Compare all alternatives
| Resource | Downloads | Rating | Versions | Last update | Price |
|---|---|---|---|---|---|
 Lithiumthe one you looked at | 142.6M | – | 1.16 – 26.x | 28 days ago | Free |
| BadOptimizationsthosea | 48.3M | – | 1.19 – 26.x | Sep 16, 2026 | Free |
 Memory Leak FixFX | 39M | – | 1.16 – 1.20 | Jan 6, 2024 | Free |
 Enhanced Block EntitiesFoundationGames | 26M | – | 1.16 – 1.21 | Jan 20, 2025 | Free |
Questions
Does Lithium work on Minecraft 26.x?
Yes. Lithium supports Minecraft 26.x. All supported versions: 26.x, 1.21, 1.20, 1.19, 1.18, 1.17, 1.16.
Is Lithium free?
Yes. Lithium is free to download from Modrinth.
Is Lithium client-side or server-side?
Client-side. Lithium goes in your own mods folder and works on any server, including servers without mods.
Is Lithium still updated?
Yes. The last update came out in the past day.
What are the best alternatives to Lithium?
The closest ones are BadOptimizations, Memory Leak Fix and Enhanced Block Entities. Compare all alternatives
Reviews
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