Pufferfish's Biome Dither

Vanilla biomes are sampled on a grid of 4 blocks, which often leaves stair-stepped edges where two surface types meet. The mod mixes blocks from neighboring biomes along those edges, so transitions look smoother instead of cut into squares. It is compatible with custom biomes and with world generation changes made by other mods. Environment: it runs on the server alone, and players join without installing it. Versions cover 1.18.2 – 26.2 on Fabric, Forge and NeoForge, and the code is not open source; the mod is released under All rights reserved.