2K and Firaxis Games announced today that XCOM: Enemy Within, the expanded experience for the Game of the Year award-winning strategy title, XCOM: Enemy Unknown, is available today in North America and will be available internationally on November 15, 2013 for Windows PC, Xbox 360 games and entertainment system from Microsoft and PlayStation 3 computer entertainment system.

In XCOM: Enemy Within, players can modify their soldiers genetically to enhance their operatives’ abilities or transform their soldiers into cybernetic warriors. These new abilities and units are imperative to combat two new aliens, the Mechtoid and the Seeker. In addition to new aliens, XCOM: Enemy Within adds a new threat known as EXALT, an underground human organization set on disrupting XCOM operations and taking control of Earth. XCOM: Enemy Within also includes an array of new maps, abilities, upgrades and weapons across both single player and multiplayer.

"XCOM: Enemy Within continues the tradition of robust expansion packs from Firaxis Games," said Christoph Hartmann, president of 2K. "With an incredible amount of new content, XCOM: Enemy Within is the definitive way to play last year’s best strategy game."

"The number one thing our fans asked for after we released XCOM: Enemy Unknown was more maps,’ said Ananda Gupta, lead designer at Firaxis Games. ‘In XCOM: Enemy Within, we’re giving players nearly 50% more maps in addition to a massive amount of other new content, providing nearly limitless replayability for XCOM commanders to enjoy."