The Elder Scrolls IV: Oblivion (Xbox 360, 2006)

This game is truly one of the best games ever created for any system. This game has one of the, if not the biggest single player ever. I have put 150 hours in the game and i am only half way done with the whole story line. This game gives you the choice to do what you want to do and when. If you dont want to enter an Oblivion gate, you can go to Bruma and break in to someones house and kill them. You control everything. Because of this and the factions you can join and the amazing graphics and just everything, this game is a must have. I wish i had 4 hours to do this because that is how long it would take me to write about everything good in this game.