Firaxis Games’ XCOM: Enemy Unknown will hit the App Store on Thursday, June 20. The title, which was released for the Mac in April, is a re-imagined version of the classic 1994 game X-Com: UFO Defense. “XCOM: Enemy Unknown for iOS takes the complete XCOM experience of the console and PC version of the game and optimizes it for the touch interface of iOS devices.“. » “XCOM: Enemy Unknown” To Be Released This Week