August 24^th, 2005 (12:53pm) - Ubisoft has made new downloadable content available for the Xbox version of Tom Clancy’s Splinter Cell: Chaos Theory. The new content includes 2 new cooperative mission that are meant to continue and end the game’s cooperative multiplayer story. The two new missions, Nuclear Plant and UN Headquarters, are playable through split screen, System Link and Xbox Live and only playable in Mission and Elite Mode.