KOTOR, the best RPG game I've ever played in my entire life.
User Rating: 9.4 | Star Wars: Knights of the Old Republic XBOX
KOTOR is like KOTOR II (see my review) except it's a little more fun. You play the former Sith Lord, Darth Revan. You can choose to retake your place as lord of the Sith, or become a famous Jedi master. It's your choice. You travel to planets like Kashyyk, Korriban, and Dantooine. You will battle all sorts of creatures and evil Sith. On your journey you will make both friends and enemies and have fun while you do so. I'd recommend this game to pretty much all audiences. It's totally worth the buy and totally worth your time to play and beat. You'll have to play over 10 times to really do everything, though, so don't be frustrated when you miss something. 
