According to Steam and Humble Bundle , you will need at least: : Windows Vista or Windows 7 Processor : 2 GHz Dual Core Memory : 2 GB RAM
: Often provides discounted Steam keys, with recent prices as low as $9.99 $5.39 (46% off). Humble Store : Sells the Steam version for $9.99 . Minimum System Requirements for PC xcom-enemy-within-pc-game-full-version-free-download
If you do not have Prime, you can purchase the game from these authorized retailers: According to Steam and Humble Bundle , you
: NVIDIA GeForce 8600 GT / ATI Radeon HD 2600 XT or better Storage : 20 GB available space XCOM: Enemy Within on Steam According to Steam and Humble Bundle
: Offers a DRM-free version of the Complete Pack, which is often recommended by users over the Steam version due to simpler license terms.