OS: Windows XP (SP3), Windows Vista (SP2), Windows 7 (SP1), Windows 8 or Windows 8.1CPU: 1.8 GHz Intel Core 2 Duo, AMD Athlon 64 Dual-Core 4000+ or equivalent (For computers using built-in graphics chipsets, the game requires 2.0 GHz Intel Core 2 Duo, 2.0 GHz AMD Turion 64 X2 TL-62 or equivalent)RAM: At least 2 GB RAMDISC DRIVE: DVD Rom Drive required for installation onlyHARD DRIVE: At least 9 GB of free space with at least 1 GB additional space for custom content and saved gamesVIDEO: 128 MB of Video RAM and support for Pixel Shader 3.0. Supported Video Cards: NVIDIA GeForce 6600 or better, ATI Radeon X1300 or better, Intel GMA X4500 or betterDIRECTX: DirectX 9.0, 10 and 11 CompatibleINPUT: Keyboard and MouseONLINE REQUIREMENTS: Internet connection required for product activation.