Supported OS:Microsoft Windows XP or Windows Vista (64 is supported)
Processor:Pentium 4 3.2 Ghz, Pentium D 2.66 Ghz, AMD Athlon 64 3500+ or better
Memory:1 GB
Graphics:256 MB, Shader Model 3 required, NVidia 6800 or ATI X1650 or better*
Hard Drive:3.5 GB (Multiple saves and user created maps will increase the amount of needed hard disk space.)
Supported OS: Microsoft Windows® XP SP2 or Vista
Processor: 2.8 GHz or faster
Memory: 1 GB RAM or more for Windows XP (2 GB for Vista)
Graphics: DirectX® 9.0c compatible video card, Shader Model 3.0 required, 256 MB or better, NVIDIA GeForce 6800 or better (7300, 7600 GS, and 8500 are below minimum system requirements), ATI
X1600 Pro or better (X1300, X1300 Pro and HD2400 are below minimum system requirements)
Hard Drive: 7.5 GB free space