
One Chunk Blocks
Turns generated chunks into single-block chunk mosaics while keeping Minecraft fully beatable.
Screenshots






About this Mod
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.
Available Versions
How to Install One Chunk Blocks on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "One Chunk Blocks". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.4, 1.21.1 (+7 more)
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
One Chunk Blocks server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is One Chunk Blocks compatible with fabric?
One Chunk Blocks officially supports fabric for Minecraft 1.21.11, 1.21.4, 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with One Chunk Blocks – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if One Chunk Blocks consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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