Or implement their own "biome" generation. All that a biome is, is that it defines which type of landscape is generated and with which types of blocks.
Except for swamp biomes of course, which generate slimes. And desert biomes, which have no rain, or ice biomes, where it snows. But those are almost flags, in the end.
Except for swamp biomes of course, which generate slimes. And desert biomes, which have no rain, or ice biomes, where it snows. But those are almost flags, in the end.