Windows XP/Vista/W7 Pentium 4 @ 3 4 GHz or Athlon 64 3600+ 1 GB (2 GB for Multiplayer) DirectX 9.0c Graphics adapter supporting PixelShader 2.0 and 128 MB ram at least GeForce 7600 or Radeon X series DirectX 9.0c compatible sound card 2 GB free disk space