OS: Win XP (SP3), Vista (SP1) or Win 7 CPU: 2.8 GHz processor or equivalent RAM: 1 GB RAM (XP), 2 GB RAM (Vista or Windows 7) GPU RAM: 256MB Video Card and Shader Model 3.0 required GPU NVIDIA: GeForce 6800 or better (7300, 7600 GS, and 8500 are below minimum system requirements) GPU ATI: X1600 Pro or better (X1300, X1300 Pro and HD2400 are below minimum system requirements) HDD: At least 10GB of hard drive space for installation, plus additional space for saved games. DX: DirectX 9.0c