Ready for your server: Lithium has versions for Fabric and NeoForge. Create your world with one of those loaders and a version from the table below. The newest option is NeoForge on Minecraft 26.3.
What Lithium does
No-compromises game logic optimization mod, useful for both single-player games and multi-player servers.
Lithium is a modern, general-purpose optimization mod for Minecraft which works to improve a number of systems (game physics, mob AI, block ticking, etc) with the goal of not changing any vanilla mechanics.
- Author
- jellysquid3
- Categories
- optimization
- Loaders
- Fabric and NeoForge
- Minecraft versions
- 26.3, 26.2, 26.1.2 and 35 more (oldest: 1.16.2)
- Latest version
- mc26.3-0.26.2-neoforge (NeoForge, September 28, 2026)
- Downloads
- 139,685,502
- License
- LGPL 3.0 only
Which Minecraft version and loader it works with
Every world has its own Minecraft version and loader (vanilla, Fabric, Forge or NeoForge).
To play with Lithium, create your world with any of these combos:
| Loader | Newest | Minecraft versions |
|---|---|---|
| Fabric | 26.3 | 26.3, 26.2, 26.1.2 and 35 more (oldest: 1.16.2) |
| NeoForge | 26.3 | 26.3, 26.2, 26.1.2 and 14 more (oldest: 1.21) |
Does it go on the server or on players' games?
Lithium works on the server, on players' games or both: each side gets its perks and nobody gets locked out for not having it.
| Where | Per Modrinth |
|---|---|
| Server | optional |
| Players | optional |
| What the panel suggests | Server and players |
What other mods it needs
None: its latest version doesn't require any other mods on Modrinth.
How to add Lithium to your server
- Open the panel and create a world with a compatible loader and Minecraft version (Fabric and NeoForge, per the table above), or open one you already have.
- In the world's "Mods" section, search for Lithium in the Modrinth catalog. You'll only see what works with your world.
- Add it with the "Server and players" option, the one the panel suggests for this mod.
- Start or restart the server so it installs.
- Ask your friends to download the .mrpack modpack from the panel again.
Not sure about client vs. server mods? Read the modded server guide. What each size costs is on the pricing page. Prices in Mexican pesos (MXN).
Frequently asked questions
Which loader and Minecraft version does Lithium work with?
Lithium has versions for Fabric: 1.16.2 to 26.3 (38 versions); NeoForge: 1.21 to 26.3 (17 versions). You pick the loader and version when you create your world; the newest option is NeoForge on Minecraft 26.3. The panel's catalog only shows Lithium if it has a version for your world.
Do players have to install Lithium?
Lithium works on the server, on players' games or both: each side gets its perks and nobody gets locked out for not having it.
What other mods does Lithium need?
Its latest version (NeoForge) doesn't require any other mods on Modrinth: just add Lithium and you're set.
Does adding Lithium cost extra?
No. Mods are free; you pay based on server size and the hours it's on. A Small server with 10 hours a week comes to about $117.10 MXN a month. If you stack lots of mods, a bigger size might suit you better.
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Build your server with Lithium
Create your Minecraft server, add any mods you like and pay only for the hours you play.
Modrinth data updated October 19, 2026.