Download Lithium for Minecraft 1.21.1

★★★★☆ 4.2 | 133K+ downloads

Game logic optimization without behavior changes.

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About Lithium

Lithium optimizes Minecraft's game logic without changing any gameplay mechanics. It improves tick times, reduces CPU usage, and makes both single-player and multiplayer run smoother.

What Lithium Adds

Lithium rewrites inefficient game logic systems including AI pathfinding, physics calculations, and block ticking. All optimizations are designed to be invisible to the player - the game behaves exactly the same, just faster.

Features

  • Optimizes game logic
  • No gameplay changes
  • Improves server TPS
  • Reduces CPU usage
  • Works with Sodium

Compatibility

Mod LoaderFabric loader. Pairs perfectly with Sodium and Phosphor for the ultimate performance setup.
Minecraft Version1.21.1
CategoryPerformance
LicenseFree

How to Install Lithium 1.20.1

  1. Click the download button to get the lithium-1.20.1.jar file
  2. Install the required mod loader for Minecraft 1.21.1
  3. Place the .jar file in your .minecraft/mods/ folder
  4. Launch Minecraft 1.21.1 and enjoy!

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FAQ

Is Lithium 1.20.1 free?
Yes, Lithium is completely free to download for Minecraft 1.21.1.
Does Lithium work with other mods?
Yes, Lithium is compatible with most popular Minecraft mods.
How do I update Lithium?
Simply download the latest version and replace the old .jar file in your mods folder.