Kotor (knights of the Old Republic) is a Rpg. It uses the rules set of a D&D like game, with a third person camera. You basically walk around different planets you can travel to in your starship, talking to people, choosing what to say, to be evil, good, or somewhat in between. There's the awesome battles, blasters, katanas, med-packs, thermal detonators, even lightsabers for those in your party who're Jedi.
Anybody who like RPG's should give Kotor a roll, it was a critical success, and what I consider one of the best RPG's. Bioware's next project, Mass Effect, Is released TBR nov 20. It expands on almost all the ideas the put forth with kotor, Gameinformer got to review it and gave it a 9.75 saying it's, "a huge step forward for video games", and that it "rings in a new age of interactive storytelling." Needless to say i'm getting it.