GL

OS: Windows XP/Vista/7
Processor: 3.4 GHz Pentium 4 or Athlon 64 3600+
Memory: 1 GB (2 GB for Multiplayer)
Graphics: Graphics adapter supporting PixelShader 2.0 and 128 MB ram, at least GeForce 7600 or Radeon X series
DirectX®: 9.0c
Hard Drive: 2 GB of free space
Sound: DirectX 9.0c compatible sound card