I didn't start playing till the 7th gen. I did have an original xbox, though I only played Halo CE on it. One of the best games ever. But for the 7th gen, definently
-COD 4
-Halo 3
-Gears of War
-Mass Effect 1 and 2
-Super Mario Galalxy
-Uncharted 2
-Bioshock
Many more I don't want to list.
Made a bet with LipeJJ and HylianYoshi that the XB1 will reach 30 million before Wii U reaches 15 million. Loser has to get avatar picked by winner for 6 months (or if I lose, either 6 months avatar control for both Lipe and Hylian, or my patrick avatar comes back forever).