windows Minimum
OS: Windows Vista SP2, Windows 7, Windows 8
Processor: 2 GHz Dual Core CPU
Memory: 4 GB RAM
Graphics: GeForce 400 or higher, AMD Radeon HD 4000 or higher, Intel HD 4000 or higher (DirectX 11 hardware support required)
Storage: 4 GB available space
Directx: Version 11
Sound card: DirectX compatible
windows Recommended
OS: Windows 7 (64 bit), Windows 8 (64 bit)
Processor: 2.5 GHz Quad Core CPU
Memory: 8 GB RAM
Graphics: GeForce 500 or higher, AMD Radeon HD 5000 or higher
Directx: Version 11
macosx Minimum
OS: OSX 10.9
Processor: 2 GHz Dual Core CPU
Memory: 4 GB RAM
Graphics: GeForce 400 or higher, AMD Radeon HD 4000 or higher, Intel HD 4000 or higher
Storage: 4 GB available space
macosx Recommended
Processor: 2.5 GHz Quad Core CPU
Memory: 8 GB RAM
linux Minimum
OS: Ubuntu/SteamOS (latest)
Processor: 2 GHz Dual Core CPU
Memory: 4 GB RAM
Graphics: GeForce 400 or higher, AMD Radeon HD 4000 or higher, Intel HD 4000 or higher
linux Recommended
Processor: 2.5 GHz Quad Core CPU
Memory: 8 GB RAM
Graphics: GeForce 500 or higher, AMD Radeon HD 5000 or higher