XCOM: Enemy Within [Download]

XCOM: Enemy Within is the explosive expansion to XCOM: Enemy Unknown, adding a cutting edge array of new abilities, upgrades and weapons to the award-winning strategy game.

• Defend Earth from a deadly new organisation, EXALT, and new alien types including the Mechtoid.
• Build a Genetics Lab to enhance your operatives’ abilities by augmenting their chest, brain, eyes, skin and legs.
• Construct new weapons and armor including the Mechanized Exoskeletal Cybersuit (MEC), which can be upgraded with a grenade launcher and flamethrower.
• Find and secure Meld, a valuable alien resource, to unlock new research projects and advanced upgrades.
• Cloak-and-dagger and intelligence operations provide new tactical challenges on over 40 new battlefields.
• Create your own multiplayer squad from a wider array of units and abilities.

Requires the base game XCOM: Enemy Unknown to activate.

• Supported OS: Mac Mountain Lion 10.8.5         
• Processor: 2.0 GHz
• RAM: 4 GB
• Hard Disk: 15 GB
• Video Card: 256 MB
• Additional Requirements: The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series and NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: Intel HD3000, NVIDIA 9400 and NVIDIA 320M.