OS: Windows Vista/7/8 64bit (32bit O/S not supported) Processor: Core 2 Duo 2.4GHz or Athlon X2 2.7GHz RAM: 4 GB Hard Drive: 20 GB available space Video Card: DirectX 10 or 11 compatible card, ATI Radeon 3870 or higher, NVIDIA GeForce 8800 GT or higher with 512MB graphics memory, Intel HD Graphics 2500 or higher DirectX: Version 10