promotional bannermobile promotional banner

Lithium (Fabric/NeoForge)

An optimization mod for Minecraft which improves server performance significantly.

File Details
DownloadInstall

Lithium mc1.21.10-0.20.1 for Fabric

By2No2Name
  • R
  • Nov 13, 2025
  • 815.87 KB
  • 706.3K
  • 1.21.10
  • Fabric + 1

File Name

lithium-fabric-0.20.1+mc1.21.10.jar

Supported Versions

  • 1.21.10

Curse Maven Snippet

Fabric

modImplementation "curse.maven:lithium-360438:7219262"

Quilt

modImplementation "curse.maven:lithium-360438:7219262"
Curse Maven does not yet support mods that have disabled 3rd party sharing

Learn more about Curse Maven

Lithium 0.20.1 for Minecraft 1.21.10 includes mod compatibility improvements and a bugfix.

Make sure to take a backup of your world before using the mod and please report any bugs and mod compatibility issues at the issue tracker. You can check the description of each optimization and how to disable it when encountering a problem.

Changes

  • Minor improvement to explosion optimization (Thanks to jcw780)
  • Re-enable cached sea level optimization
  • Compatibility with NeoForge chunk access during chunk loading
  • Improved compatibility with mods that create entities for outside-world display purposes

Fixes

  • Detect removal of double inventories hoppers interact with correctly