XCOM: Enemy Unknown PC Steam CD Key (valid until February 2027)

Windows

• OS:Windows Vista Processor:2 GHz Dual Core Memory:2 GB RAM Graphics:NVIDIA GeForce 8600 GT / ATI Radeon HD 2600 XT or greater DirectX®:9.0 Hard Drive:20 GB HD space Sound:DirectX Compatible Other Requirements:Broadband Internet connection Additional:Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Visual C++ 2008 Redistributable, DirectX and Microsoft .NET 4.

Mac

• OS: 10.8.5 (Mountain Lion) Processor: 2.0 GHz Intel Core 2 Duo (Dual-Core) Memory: 4 GB RAM Hard Disk Space: 20 GB Video Memory: 256 MB Video Card: AMD HD4000 / NVIDIA 9000 Series (See NOTICE for details) Additional: Broadband Internet Connection. NOTICE:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series, NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: NVIDIA 320M, NVIDIA 9400 and Intel HD3000.

Linux

• OS: Ubuntu 14.04 (64 bit required) Processor: 2GHz Memory: 4GB Memory Graphics: 512MB* Hard Drive:16GB HD space Other Requirements: Nvidia 600 series+, AMD 6000 series+, Intel Iris Pro. IMPORTANT: Requires 64bit OS to play.