Owners of the Xbox port can now download extra contents for the game via Xbox Live, two multiplayer maps from the freshly released Resurrection of Evil.

Communications: A receiving area warehouse providing storage and distribution for the Communication sector on Mars, Communications is home to long corridors and dark corners, and is perfect for surprising enemy players from the shadows or taking them out head-on, so gamers will have to keep on their toes to survive in this dangerous environment. Surface: A lonely section of the Mars UAC base left exposed to the elements of the Martian environment, Surface is a multi-tiered industrial yard centered between two external gates, where a vast amount of pipes and platforms criss-cross over a large section of the Martian surface, helping any player bring death from above. Players must be quick, agile and skilled at shooting on the fly to win.

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