WindowsRequires a 64-bit processor and operating systemOS: 64-bit Windows 7 or HigherProcessor: Intel® Core™ i3-2105 or AMD® Phenom™ II X3 720Memory: 8 MB RAMGraphics: Nvidia® GeForce™ GTX 560 Ti or AMD® ATI Radeon™ HD 5870 (1 GB VRAM)DirectX: Version 11Network: Broadband Internet connectionSound Card: DirectX 9 sound deviceAdditional Notes: Multiplayer is compatible between Windows, Mac and Linux versions.