OS: Windows XP (Service Pack 3)/Vista (Service Pack 2)/ 7 Processor: Intel Core 2 Duo E4400 2 GHz / AMD Athlon 64 X2 4000+ 2.1 GHz or higher (Intel Core2 Quad Q6600 2.4 GHz / AMD Athlon 64 X2 5200+ 2.6 GHz or higher recommended) RAM: 1 GB Hard Drive: 10 GB available space Video Card: 512 MB DirectX® 9.0c-compliant video card(*see supported list) DirectX: Version 11