Cosmic Horror with uncaring gods, alien beings, dreamlands, magical cultists, and lots of things that can drive one insane. The main RPG is the BRP one but elements have been in D&D since the beginning and there are tons of different RPGs, including d20, Savage Worlds, Fate, Black Hack, etc.
112 Highpoint (DragonMech) - Goodman Games, 2004. The moon broke apart and in raining down on the land. Too dangerous to remain above ground, so everyone crowds into the underdark. Except the ones that build giant steampunk mechs to live in, so large that entire towns live in them. As well as halfing "cogling" villages in the inner workings of the machines.
115 Fading Suns 1996. Feudal/Renaissance Space Fantasy with aliens, psychic powers, and theurgic rites. Ascending human empire after fallen previous ones with strong nobility and church aspects and some anti-technology ones.