Survival in hardcore acid-alien sci-fi themed world
A game that aims to contain lots of environments and things.
Ethereal mod uses the v7 mapgen to add many new biomes to the world.
Algae mapgen addition to "Minetest Game"
Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.
Adds a whole bunch of new types of trees, some bearing fruit or similar, using biome_lib for the placement engine.