Also Dwarf Fortress ;-) In Minetest, Terrain is generated using Perlin noise (or Simplex noise?). Voronoy noise is used to put a landscape on top of it. The re

Also Dwarf Fortress ;-) In Minetest, Terrain is generated using Perlin noise (or Simplex noise?). Voronoy noise is used to put a landscape on top of it. The result is quite convincing. even if you use a bit crazy values for noise parameters, you can get arches and "floating islands" that remind of fantasy landscapes. Any sufficiently complex process looks like randomness (that's what we colloquially call "luck"). Therefore randomness (PRNG, coherent noises) can look like a complex process with enough trickery.