MINIMUM:
OS: Windows 7
Processor: 1.7 GHz Dual Core
Memory: 2 GB RAM
Graphics: NVIDIA GeForce GTX 260, ATI Radeon 4870 HD, Intel HD 3000, or equivalent card with at least 512 MB VRAM
DirectX: Version 9.0
Storage: 2500 MB available space
Sound Card: DirectX Compatible Sound Card
Additional Notes: Must have OpenGL 3 with GLSL version 1.3
RECOMMENDED:
OS: Windows 7
Processor: Intel Core 2 Duo at 2.2 GHz, AMD Athlon 64 2.2Ghz
Memory: 3 GB RAM
Graphics: NVIDIA GeForce GTX 460, AMD Radeon HD 6850
DirectX: Version 11
Storage: 2500 MB available space
Sound Card: DirectX Compatible Sound Card
Additional Notes: Must have OpenGL 3 with GLSL version 1.3. Some users may need to disable the Steam overlay