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One Chunk Blocks

Turns generated chunks into single-block chunk mosaics while keeping Minecraft fully beatable.

Fabric
Loaders
Fabric
Downloads on Modrinth
2.7K
Followers on Modrinth
2
versions
18
Updated
April 19, 2026Apr 19
Published
in 2026

At a glance

Runs on Fabric
For Minecraft 1.21.4, 1.21.11 …
Server only — players don't need to install it
Latest version — 1.0.9+1.21.4 from April 19, 2026
License MIT — free
Where it's needed
In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.21.1, 1.21.4, 1.21.11 …

One Chunk Blocks turns world generation into a chunk-by-chunk block mosaic.

After terrain and features are generated, each chunk is assigned one deterministic block from a large palette. Most solid blocks inside that chunk are then replaced with that chosen block, so one chunk may become stone, another may become quartz, another may become obsidian, copper, terracotta, wood, planks, or many other full blocks.

Gameplay

This mod creates a chaotic and unusual survival world where every new chunk can look completely different from the previous one. It is meant for challenge runs, strange exploration, and worlds that feel unpredictable without fully breaking progression.

Notes

This mod affects newly generated chunks. Existing terrain that was already generated before installing the mod will not be changed.

FAQ

How to install One Chunk Blocks?

Install Fabric for your Minecraft version, download One Chunk Blocks 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 One Chunk Blocks support?

One Chunk Blocks has builds for Minecraft 1.20.6, 1.21.1, 1.21.4, 1.21.11 ….

Is One Chunk Blocks needed on the server?

Server only — players don't need to install it

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

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