Chunky (Fabric)

Mod

by pop4959

Pre-generates chunks, quickly, efficiently, and safely

Type

Mod

CurseForge Downloads

22,626,258

CurseForge ID

433175

Last Updated

Nov 6, 2026

Description

Chunky

Pre-generates chunks, quickly, efficiently, and safely

Features

Start one or several chunk generation tasks at the same time (if you want to leverage your CPU more)
Pause chunk generation tasks, saving them for later
Shows detailed information such as chunks processed, percent to completion, ETA, chunk processing rate, etc
Custom world shapes, and optional world border support with ChunkyBorder installed

Permissions

In order to use chunky you will need to either:

Be an operator on a dedicated server. To become an operator, someone with access to the server must run the command op <username> from the server console.
Be in a singleplayer world. In older versions of chunky you may also need to enable cheats for the world. This can be done during world creation, or by using the "Open to LAN" button.

Commands

Task Management

chunky start Starts a new chunk generation task from the current selection
chunky pause Pauses the current chunk generation tasks, and saves progress
chunky continue Continues running current or saved chunk generation tasks
chunky cancel Stops the current chunk generation tasks, and cancels progress

Selection

chunky world [world] Sets the currently selected world
chunky shape <shape> Set the shape to generate
chunky center [<x> <z>] Sets the current center block location
chunky radius <radius> Sets the current radius
chunky worldborder Set the center and radius to match the world border in the selected world
chunky spawn Set the center to the spawn point
chunky corners <x1> <z1> <x2> <z2> Set the selection by corner coordinates
chunky pattern <pattern> Set the preferred generation pattern
chunky selection Display the current selection

Miscellaneous

chunky silent Toggle displaying update messages
chunky quiet <interval> Set the quiet interval in seconds for update messages
chunky progress Display pre-generation progress in-game for all tasks
chunky reload Reloads the configuration
chunky trim Delete chunks outside selection

Examples

Generate chunks in a square centered at 0,0 in the overworld with a 1000 block radius

chunky radius 1000
chunky start

Generate chunks in a circle centered at spawn in the nether with a 1000 block radius

chunky world the_nether
chunky shape circle
chunky spawn
chunky radius 1000
chunky start

Generate chunks inside a world border centered at 0,0 with a 10000 block radius

worldborder center 0 0
worldborder set 20000
chunky worldborder
chunky start

Links

Wiki Find up-to-date information about plugin features
Discord Visit the #chunky channel and ask questions
Crowdin Help translate the plugin into several languages
Donate Support the project if you've found it useful
bStats Check out some cool stats for the plugin
CodeMC Download the latest builds from this mirror
ChunkyBorder Custom world border addon

Screenshots

Example pre-generated square world with radius 2000

Generating 3 worlds simultaneously using a Ryzen 3700X processor + 16GB RAM

Partner

Chunky is partnered with Bloom Host who provide excellent high performance server hosting options. Click the banner below and use code CHUNKY for 25% off your server!