03 Oct 2013
XCOM: Enemy Within will add new abilities, upgrades, weapons, and a new soldier class to combat new enemy threats. This expansion pack will also introduce new resources, new maps, new tactical and strategic gameplay, and new multiplayer content.
05 Jan 2012
XCOM: Enemy Unknown is a re-imagining of X-COM, the classic strategy game from 1993, and developed by the award-winning creators of Civilization. You will control the fate of the human race by creating and managing a fully operational base, researching alien technologies, planning combat missions and controlling soldier movement in battle.