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Mods

Lithium

Lithium is a Java Edition optimization mod for Fabric, NeoForge, and Quilt that targets game logic systems such as physics, mob AI, and block ticking without adding gameplay content.

By jellysquid3 via Modrinth.

Lithium mod icon on Modrinth
Section
Java Mod
Platform
Java
Versions
v 1.16.2 / 1.16.3 / 1.16.4 / 1.16.5 / 1.17 / 1.17.1 / 1.18 / 1.18.1 / 1.18.2 / 1.19 / 1.19.1 / 1.19.2 / 1.19.3 / 1.19.4 / 1.20 / 1.20.1 / 1.20.2 / 1.20.3 / 1.20.4 / 1.20.5 / 1.20.6 / 1.21 / 1.21.1 / 1.21.2 / 1.21.3 / 1.21.4 / 1.21.5 / 1.21.6 / 1.21.7 / 1.21.8 / 1.21.9 / 1.21.10 / 1.21.11
Last checked
Updated

Lithium is a general-purpose Java Edition optimization mod for players and server owners who want lower game-logic overhead without changing how the world plays. It focuses on internal systems such as physics, mob AI, block ticking, and the integrated server used in single-player worlds.

Loader and side support

  • Loaders: Fabric, NeoForge, and Quilt.
  • Side: optional on both client and server, so a server can run it without requiring every player to install it.
  • Dependencies: no extra mod dependency is listed for normal installation.
  • Install path: place the matching jar in the mods folder for the loader and Minecraft version you use.

On servers, Lithium is aimed at reducing tick-time pressure from common world simulation work. In single-player, the same server-side logic still runs behind the scenes, so the mod can help the game spend less CPU time on world updates.

Lithium is not a visual mod and does not add blocks, mobs, items, menus, or shader features. It is most relevant when a pack or server already has its content set and needs a lighter simulation layer underneath.

Questions about this entry.

  • Does Lithium need to be installed on both client and server?

    No. The source lists Lithium as optional on both sides, so clients and servers can use it independently.

  • Does Lithium add new gameplay content?

    No. Lithium is focused on game logic optimization and does not add blocks, items, mobs, or visuals.