New content heading to Xbox Live Marketplace detailed

Related Games:
Borderlands, Peggle, Batman: Arkham City, Mass Effect 3, Plants vs. Zombies, Boulder Dash XL, Bejeweled Blitz, Cars 2: The Video Game, Bejeweled 3, Bang Bang Racing, Mad Riders, Assassin's Creed 3, Zuma Deluxe, Feeding Frenzy 2: Shipwreck Showdown
Source:
Major Nelson