This is via observation, as I am not much of a gamer myself. My husband has Fable 2, and LOVED it. It took him a while to beat it, which is how I judge the value of a game. I hate spending 60 dollars just for him to sit down and beat it (Mirror's Edge took three sittings, and he beat it). Fable 2 has a TON of different options, so you really control your game. It seems to be very open-ended, and once you beat it Good/Evil, I think you can play it again the other way. SO, it took him a while to actually beat the game. He does work full time, plus raise 4 kids, so I'd say he plays 5-6 hours per week.
I just bought him Call of Duty: World at War, which he likes a lot too...
