
HariChunk is an experimental Forge 1.20.1 fork of C2ME (Concurrent Chunk Management Engine), focused on multithreaded chunk generation and asynchronous chunk I/O.
It aims to improve chunk generation and loading on multicore CPUs by parallelizing selected world-generation work and moving chunk reads and writes off the main thread. Results depend on hardware, world, workload, and other installed mods; some setups may see little or no benefit.
Compatibility
- Minecraft 1.20.1
- Minecraft Forge
- Java 17
Check the compatibility listed on the specific file. For multiplayer, use matching HariChunk versions on the server and connecting clients when required by that file.
Experimental status
HariChunk changes chunk scheduling and I/O across threads. Back up worlds before testing, and validate it with your modpack. Mod interactions and workload differences can affect stability and performance.
Credits and license
HariChunk is an independent fork based on C2ME by RelativityMC and ishland. Upstream project: RelativityMC/C2ME-forge. The CurseForge project is licensed under MIT. The upstream authors do not endorse this fork.
This does not describe the upstream authors' work. The HariChunk port and this project description were prepared with AI assistance.

