As a player, I think the thing I liked most about Rifts was that the setting had a ton of flavor. You name the genre, if you looked around long enough in the Multiverse, you'd find it. I mean, really, in how many other systems can you play an anthropomorphic mutant cougar psychic from the Outback who meets up with a techno-wizard Asgardian dwarf and a young amnesiac demigod and then goes dino-hunting in what's left of Florida, vampire-hunting in the desert Southwest, and finally off to do Shadowrun-like missions in a planet-sized city? (And no, I didn't just make that up.