All Call of Duty: Black Ops 2 DLC will arrive on Xbox 360 first, Microsoft exec Don Mattress has just confirmed.
The exclusivity deal follows similar agreements for previous Call of Duty titles.
A live gameplay demo of Black Ops 2, set in the near future, showcased an American city under siege from terrorists. The French president is pinned down, and you have to rescue him.
One section allowed you to snipe enemies from atop a demolished bridge. A later level had the player clearing out a ruined shopping mall.
The final chunk showcased the player seamlessly climbing into a airborne fighter jet, taking out ground-based enemies and other helicopters.