Hi again, I've dug through Starbound's assets folders to find how to add dungeons to generate on planet's asteroids or core levels. So far all I was able to find was that all biomes are generated based on files from packed/biomes/<planet layer name>/<biome name>. But now where I got stuck is that I don't know how to patch into those files lines which add the dungeon generation and stuff. In surface biomes it's written in "surfacePlaceables" and "undergroundPlaceables" blocks but when I patched those blocks into asteroids.BIOME file nothing happened. So my question is how can I add theese "whateverPlaceables" into biomes other than surface or underground layers. Thanks EDIT: I'm dumd Forgot to place the biome patch files into right folders Everything works now.