The 360 of course,On lauch xbox market place will have new DLC for Grand Theft Auto 4.Not to mention the sweeth Gamer Pics,Themes,Unlockable Gamer Pics,and more DLC in the future wich could include anything.And the achivements,playing my favriote game and unlocking new content sweth!And I know there will be unlockable Gamer pics,since Rockstart presents Table Tennis did.And it will have Force feedback(rumble).I m thingking it will also have co-op and hopefully some type of Multiplayer.