[@Hjalti] I am trying to bring all those games and more together in one dark world, having members of the various societies interact, fight, make friends, find allies, and destroy each other. The setting (which I am still working on) is going to be plenty dark and gritty, with space for all these supernatural beasties. Everything would of course happen in and around (and under) one city, big enough to support at least a small population of every kind of monster and magicker. Think of the Chicago described in the Dresden Files if you've read them. College campus, a hospital or two, large police police force, nearby woodland, and massive underground mostly forgotten by humans.