ModsFinder

Chunky

by pop4959

Chunky generates world chunks ahead of players in advance, so a map is already loaded when exploration reaches it.

FabricForgeNeoForgeClient or server, optionalGNU General Public License v3.0 onlyOpen source1.13.2 – 26.3

What it does

Chunk generation tasks are started from the chunky command, which takes a selection of area such as a square, a circle or a shape bounded by the world border. Several tasks can run at the same time to use more of the processor, and a running task can be paused, which saves its progress, then continued later or cancelled, which discards it. Progress is shown with the number of chunks processed, the percent to completion, an estimated finish time and the processing rate.

The mod works on either side, and neither side needs it, so it can be used by a player in a singleplayer world or by an operator on a dedicated server, where a player with server console access grants operator status with the op command. On Fabric, the mod depends on Fabric API. The project carries the GNU General Public License v3.0 only and is open source, with builds for Fabric, Forge and NeoForge across 49 release versions covering 1.13.2 – 26.3. Chunky Border adds world border support when it is installed alongside Chunky.

Key features

  1. Parallel generation tasks

    Several chunk generation tasks can be started and run together, which spreads the work across the processor cores.

  2. Pause and resume

    A task can be paused with its progress saved, then continued later with chunky continue.

  3. Detailed progress display

    Completion percentage, estimated time remaining and chunk processing rate are shown for each running task.

  4. Custom shapes and borders

    Generation can cover a square, a circle or the area inside the world border, with the center and radius set from the command line.

  5. Trim outside selection

    The trim command deletes chunks that lie outside the selected area.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.31.5.31.5.41.5.4
26.21.5.31.5.41.5.4
26.1.21.5.31.5.41.5.4
26.1.11.5.31.5.41.5.4
26.11.5.31.5.41.5.4
1.21.x12 of 12 versions with builds
1.21.111.4.551.4.551.4.54
1.21.101.4.521.4.521.4.52
1.21.91.4.521.4.521.4.52
1.21.81.4.401.4.401.4.40
1.21.71.4.401.4.401.4.40
1.21.61.4.401.4.401.4.40
1.21.51.4.361.4.361.4.36
1.21.41.4.271.4.271.4.27
1.21.31.4.271.4.271.4.27
1.21.21.4.271.4.271.4.27
1.21.11.4.231.4.231.4.23
1.211.4.231.4.231.4.23
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x6 of 6 versions with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Required by 5 mods

Chunky Border1.14.4 – 26.3Chunky Offline1.21 – 26.3Auto Chunky1.21.1 – 1.21.11Chunky Autopause1.20.1 – 1.21Chunky Pregenerator1.21.11

Use cases

Pre-generating a survival world

A square or circle centered on spawn can be generated before players arrive, so travel does not stall on new terrain.

Generating a dimension

A selection can be set in the nether, using a circle centered on spawn with a set radius.

Who it’s for: Singleplayer players who want terrain ready before exploring, and server owners who want to pre-generate a dedicated server's map.

How it compares

Full comparison

World Pre Generator is server-side only, published for Forge and NeoForge across 1.17.1 – 26.3 under All rights reserved, and is not open source. Generator is open source under the MIT License, published for Fabric, Forge, NeoForge and Quilt across 1.14.4 – 26.3, and runs server required with client optional. Lazy Chunk Load is server-side only, published for Fabric, Forge and NeoForge across 1.20.1 – 26.2 under the MIT License, and is not open source.

ModLoadersGame versionsEnvironmentUpdated
ChunkyFabric, Forge and NeoForge1.13.2 – 26.3Client or server, optional2026-07-23
World Pre GeneratorForge and NeoForge1.17.1 – 26.3Server-side only2026-10-10
GeneratorFabric, Forge, NeoForge and Quilt1.14.4 – 26.3Server required, client optional2026-09-18
Lazy Chunk LoadFabric, Forge and NeoForge1.20.1 – 26.2Server-side only2026-07-19

Questions

Does Chunky need Fabric API?

Yes, on Fabric. Fabric API must be installed next to Chunky on that loader. Forge and NeoForge builds do not list it as a requirement.

How does an operator start generation on a dedicated server?

A player with access to the server console runs op to grant operator status, and that operator then runs the chunky commands on the server.

Can generation be paused without losing progress?

Yes. chunky pause stops the current tasks and saves their progress, and chunky continue resumes them later.

Which versions have Chunky files?

Builds cover 1.13.2 – 26.3, with the latest Fabric and Forge builds both for 26.3.

In the catalog

Chunky is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.

Optimization mods3,545Fabric modsMods for 26.38,071

More from pop4959

All projects
Chunky Border1.14.4 – 26.3

Similar mods

Sodium1.16.3 – 26.3Iris Shaders1.16.5 – 26.3Entity Cullingb1.7.3 – 26.3FerriteCore1.16.5 – 26.3ImmediatelyFast1.18.2 – 26.3Sodium Extra1.16.2 – 26.3

What the author says

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 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…
pop4959, on the Modrinth page

Official listing

Owner
pop4959
Published
2021-04-04
Updated on Modrinth
2026-07-23
Facts verified
2026-10-15

Tags

OptimizationUtilityWorld generation
Open on ModrinthCompare