Features
World Pre-generation
Generate chunks ahead of time with Chunky and watch progress live
Exploring new terrain is the single biggest source of lag on a Minecraft server — every new chunk has to be generated on the fly. The World tab fixes that by generating chunks ahead of time with Chunky.
Enable pre-generation
Click Enable and MCSM installs the right Chunky build for your server's loader and Minecraft version from Modrinth. Works on Paper, Fabric, Forge and CurseForge modpack servers.
Start a pre-generation run
Pick a radius (in blocks) around a center point and start. Chunky works through the area while the server runs:
- Live progress — completion percentage, generation rate and ETA.
- Chunk colormap — a Minecraft-style top-down map fills in as chunks are generated, so you can literally watch your world take shape.
- Pause / resume / cancel — pre-generation is throttled by the server itself, and you stay in control.
Pre-generate at least the area inside your world border before inviting
players — a few hours of pre-generation saves weeks of intermittent lag.
Requirements
Chunky needs Minecraft 1.13.2 or newer. On CurseForge modpacks, the
matching Chunky build is resolved against the modpack's mod loader — packs on
older Minecraft versions have no compatible build.
Next steps
- Show off the generated world with a BlueMap 3D map.