Lithium

What Lithium Does Lithium is for Lithium is a mod that focuses on improving the internal game logic of Minecraft. It targets systems like physics, mob AI, and block ticking to make the game run more efficiently. The core goal is to boost performance while keeping the gameplay identical to the vanilla version. This means no changes to how blocks behave, how mobs act, or how redstone works. It's designed to work on both the client and the server, and it doesn't require installation on both sides to function. If you run a server, only the server needs the mod for players to benefit from smoother tick times. Similarly, in single-player, installing it on your client is enough to see improvements in frame rates and responsiveness. ## Who it suits Lithium is useful for players who experience lag or low frame rates in Minecraft, whether they're playing alone or on a multiplayer server. It's especially helpful for server administrators who want to support more players, entities, or loaded chunks without upgrading hardware. Because it doesn't alter game mechanics, it's safe to use on servers where gameplay integrity matters, such as those used for speedrunning or competitive play. It is also a good fit for modded environments, as it's built to be compatible with many other mods. If you encounter a conflict, the mod includes a configuration system that lets you disable specific optimizations to isolate and fix the issue. ## Main verified capabilities The mod optimizes several key areas of the game’s internal ticking process. This includes how the game handles entity movement, AI decision-making, and block updates. By refining these systems, Lithium reduces the time it takes for each game tick to complete, which can lead to higher and more stable frame rates. The mod does not promise specific FPS gains, as performance improvements depend on your hardware and world complexity. Instead, it focuses on making the game’s backend more efficient. An empty configuration file is normal and means the mod is using its default settings, which are tuned for broad compatibility and performance out of the box. ## Compatibility caveats Lithium officially supports the Fabric, Neoforge, and Quilt mod loaders. It's compatible with Minecraft versions 26.3, 26.2, 26.1.2, 26.1.1, and 26.1. These version numbers are exact as listed in the source and shouldn't be combined into a range. The mod is licensed under the GNU Lesser General Public License v3.0. While it is designed to work with most other mods, there's no guarantee of compatibility with every mod combination. If you experience issues, the recommended first step is to check the mod’s issue tracker or use its configuration system to disable optimizations one by one to identify the source of the conflict. The mod does not require Fabric API or any other library to run, and it works with the standard mod installation process: place the jar in your mods folder after installing a supported loader.