Project Lambda
Minecraft Java mod. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForge
Project Lambda is an ambitious project aiming to re-create the classic shooter masterpiece, Half-Life, often debated to be the best game of all time that revolutionized its genre, in Minecraft. It is a complete rewrite and overhaul of LambdaCraft, permission for which was kindly granted by its owner KSkun.
Warning: Project Lambda is still in beta so expect a few issues, hopefully no game breaking bugs though. I am looking for testers so I urge everyone to report any found bugs on my github issue tracker.
Hopefully soon. ;(
Please refer to the wiki for now to check out all the current and planned features, changelogs as well as view and report bugs.
Gigaherz, WeAthFolD, Diesieben, Jglrxavpok, Vase of Petunias, Jamie's White Shirt, Therealfarfetchd, Henry Loenwind, Absolem Jackdaw, Latvian Modder, Tterrag, Lemon, Gamebuster, Wouter, Xzeroair, many others and the whole MMD discord.
Project Lambda's code is licensed under the Attribution-NonCommercial 3.0 License.
Using the mod in non commercial mod-packs is encouraged and doesn't require permission, but I would appreciate if you informed me about your mod-pack.
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as ProjectLambda-0.0.2.jar — drop this file into the mods folder
- Download size: 5.4 MB
- Download link checked 13 Oct 2026 — working
These come from our own check of the pack file, not from the source page.