Chunk Randomizer

Replaces all blocks of every chunk you visit! Explore the randomizing world ... ... and defeat the ender dragon!

by eckelsoftCursed World generation

Fabric

Loaders: Fabric
Downloads on Modrinth: 43K
Followers on Modrinth: 59
versions: 9
Updated: July 17, 2026Jul 17
Published: in 2024

Add to favorites Follow updatesFollow

New Update · swipe

At a glance

Runs on Fabric

For Minecraft 1.21.9–1.21.11, 26.2 …

Needed in the game and on the server

Latest version — 2.3.0 from July 17, 2026

Requires Fabric API

License MIT — free

Where it's needed

In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.20.1, 1.21.9–1.21.11, 26.2

Chunk Randomizer (Sulfur Update)

Every chunk you visit is randomized to a new blocktype!

Explore the world..

.. defeat the ender dragon.

Important: Run /rc start in chat to start the challenge. Chunk randomization only begins after this command.

🛠 Basic Commands

Command	Description
`/rc start`	Activate the challenge.
`/rc stop`	Pause the challenge.
`/rc effects`	Toggle potion effects (Default: false)
`/rc fluids <true/false>`	Toggle: Should Water, Lava and Fire be randomized? (Default: false)
`/rc exclude add `	Add a block to the custom blacklist
`/rc exclude clear`	Reset your custom blacklist
`/rc debug <0-3>`	Toggle debug messages for protection, blocks, and effects.

💡 Pro Tips & Customization

Use /rc exclude add minecraft:... to prevent a chunk from turning into a lag-fest.
Chunk Walker Boots: They protect you from all world-randomization and effects, but they lose 10 durability per chunk.
Status effects/curses are disabled by default. Enable or disable them using /rc effects. Active chunk effects are removed immediately when you leave the chunk, use Chunk Walker Boots, stop the challenge, or disable effects.

Developed by Eckelsoft

FAQ

How to install Chunk Randomizer?

Install Fabric for your Minecraft version, download Chunk Randomizer for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Chunk Randomizer support?

Chunk Randomizer has builds for Minecraft 1.20.1, 1.21.9–1.21.11, 26.2.

Is Chunk Randomizer needed on the server?

Needed in the game and on the server

License and source

MIT Licensefree to use and share with credit to the author

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders