http://store.steampowered.com/app/520570
Steam account required for game activation and installation
Windows System Requirements
MINIMUM:
OS: Windows Vista
Processor: Core 2 Duo
Memory: 2 GB RAM
Graphics: SM3 512MB VRAM
Storage: 300 MB available space
RECOMMENDED:
OS: Windows 7
Processor: Core i3
Memory: 4 GB RAM
Graphics: SM4 1GB VRAM
Mac System Requirements
MINIMUM:
OS: Snow Leopard
Processor: Dual Core Intel
Memory: 2 GB RAM
Graphics: SM3 512MB VRAM
Storage: 300 MB available space
RECOMMENDED:
OS: Mountain Lion
Processor: Core i3
Memory: 4 GB RAM
Graphics: SM4 1GB VRAM
Storage: 300 MB available space
Linux System Requirements
MINIMUM:
OS: Linux (Most Linux distributions should work)
Processor: Core 2 Duo
Memory: 2 GB RAM
Graphics: SM3 512MB VRAM
Storage: 300 MB available space
RECOMMENDED:
OS: Ubuntu 14.04
Processor: Core i3
Memory: 4 GB RAM
Graphics: SM4 1GB VRAM
Storage: 300 MB available space
Language Support:
English, French, German, Spanish, Russian