Square Biomes
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A Minecraft Fabric mod that makes overworld biomes generate in square grids.
Fabric is a mod loader for versions 1.14+ of Minecraft, particularly popular for client side and optimization mods.
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Description
square-biomes is a Fabric mod for Minecraft 1.21.11 that replaces natural biome borders with a strict square grid.

Each biome is resolved per square cell, producing a clean tiled overworld instead of vanilla's curved climate-driven layout. The mod also supports strong randomization, so overworld biome distribution can be much less dependent on vanilla climate rules.
Features
- Square biome borders
- Configurable biome square size
- Configurable cell jitter
- Configurable random biome chance
- Random biome mode applies only to the overworld
- Nether and End are excluded from random biome selection
- Uniform random selection across unique overworld biomes
Default config
- gridSizeBlocks: 128
- cellJitter: 0.85
- randomBiomeChance: 0.8
Requirements
- Minecraft 1.21.11
- Fabric Loader
- Fabric API
- Java 21
Important
- New worlds are recommended
- Existing worlds can show visible borders where new chunks generate
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