Fallout 3 (Xbox 360)

Fallout 3 has the best graphics, nice storyline and plenty of gameplay time.  The user interaction with game characters is very good and the outcome is dependent on what answer choices you make.  That really impressed me and the game has lot of innovations. You can roam wherever you want in the wastelands and there are plenty of side missions you can do. This game truly qualifies to be the game of the year.