Windows
OS: Windows XP SP2, Windows Vista, Windows 7 Processor: Pentium IV 3.2Ghz, or any dual core processor Memory: 1GB (XP), 1.5GB (Vista), 1.5 GB (Windows 7) Hard Disk Space: 8.5GB space free Video Card: 128 MB Video Card using Shader Model 3 (Nvidia GeForce 6600 GT / ATI X1600) Other: Online Steam Account