Windows
OS: Microsoft Windows(R) XP, Windows Vista(R) or Windows(R) 7 Processor: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz (2 CPUs) -or- AMD(R) Athlon(TM) II X2 250 Memory: 2 GB RAM Graphics: 256 MB NVIDIA(R) GeForce(TM) 8600 GTS -or- 256 MB ATI(R) Radeon(TM) HD 3650 -or- equivalent graphic card (motherboard integrated video chipsets are not supported) DirectX: 9.0c Hard Drive: 2 GB HD space Sound: DirectX 9.0c-compliant true 16-bit sound card Other Requirements: Broadband Internet connection Additional: Internet connection is for Steam only. No online MP. Multiplayer is turn-based and requires two different input devices.