Biome blocks

Biome blocks are blocks that form the ground of the biome. For example, Garden biome always has Cobblestone, Dirt and Mud. Most biomes have only 3-4 types of blocks.

Biome can't have other blocks (only those from its "biome blocks" list). However, biome can have microdungeons, and those microdungeons can have other blocks. For example, Garden biome doesn't have Plant Matter, but its microdungeons often do.