Frontier 3D: Archipelagos
This is inspired by an earlier project of mine to generate 2D landscapes procedurally. I needed album art for a track I was working on, and wanted to bring landscape generation into the third dimension.
Perlin noise is used to create the landscape, which is then tesselated using a Delaunay algorithm. Trees then grow on surfaces that aren't inclined too much. Houses spawn (on stilts if need be), with extensions climbing upwards.