Single Player, Xbox LIVE Multiplayer 2, 5.1 Surround Sound, HD (High Definition). Ready to extend your experience to the extreme? Purchase the full version of E4 now to get all four primary stages, 100 Revenge levels, five great game modes, leaderboards, achievements, and the ability to play along to your own favorite music! This sensational shooter is one that you won't want to miss. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.