Minimum:
OS: Windows 7 SP1, 8, 10
Processor: Intel i3 2100+ or AMD FX-4100+
Memory: 2 GB RAM
Graphics: 512 MB VRAM, nVidia GT 720+ or AMD HD 5450+ or Intel HD Graphics 5000+
DirectX: Version 9.0c
Storage: 500 MB available space
Sound Card: DirectX compatible
Linux
Minimum:
OS: Ubuntu 12.04+, SteamOS+
Processor: Intel i3 2100+ or AMD FX-4100+
Graphics: 512 MB VRAM, OpenGL 3.2+ compatible, nVidia GT 720+ or AMD HD 5450+ or Intel HD Graphics 5000
Storage: 500 MB available space
Mac
Minimum:
OS: Mac OS X 10.8+ Mountain Lion
Processor: Intel i3 2100+ or AMD FX-4100+
Memory: 2 GB RAM
Graphics: 512 MB VRAM, OpenGL 3.2+ compatible, nVidia GT 720+ or AMD HD 5450+ or Intel HD Graphics 5000+
Storage: 500 MB available space