OS: Windows XP/Vista/7/8 Processor: 2.53 GHz Intel® Core™2 Duo E6400 or 2.80 GHz AMD Athlon™ 64 X2 5600+ or better RAM: 2 GB Hard Drive: 25 GB available space Video Card: 512 MB DirectX® 10–compliant with Shader Model 4.0 or higher DirectX: Version 9.0