I was never a fan of the old Tomb Raider games' game play, but this one really got me into the whole Tomb Raider world!
I can finally enjoy the great storytelling and cinematics and really have a great time. I like the replayability and the fact that there are multiple difficulty settings. You can go back to previously finished segments and replay them in Time Trial mode and unlock awesome stuff. I am an "unlockable stuff" fanatic, so that sure appealed to me.
This game plays so smoothly and really was fun. My brother bought it when it first came out and I beat it then, but since it has really dropped in price, I decided to get my own and beat it again (and again). There aren't many games I get that much enjoyment out of.