Survival in hardcore acid-alien sci-fi themed world
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.
Ethereal mod uses the v7 mapgen to add many new biomes to the world.
A mod for Minetest to add underground realms.
Algae mapgen addition to "Minetest Game"