System requirements

Windows
Minimum:
 * OS: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10
 * Processor: 1.2 Ghz
 * Memory: 1024 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 250 MB available space

Recommended:
 * OS: Windows 7, Windows 10
 * Processor: 2.0+ Ghz
 * Memory: 2048 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 500 MB available space

Additional Notes: Please make sure your video drivers are up-to-date!

Mac OSX
Minimum:
 * OS: OSX 10.8, 10.9, 10.10, 10.11
 * Processor: 1.2 Ghz
 * Memory: 1024 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 250 MB available space

Recommended:
 * OS: OSX 10.10, 10.11
 * Processor: 2.0+ Ghz
 * Memory: 2048 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 500 MB available space

SteamOS + Linux
Minimum:
 * OS: Ubuntu 14+
 * Processor: 1.2 Ghz (32 or 64-bit)
 * Memory: 1024 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 250 MB available space

Recommended:
 * OS: Ubuntu 16
 * Processor: 2.0 Ghz (32 or 64-bit)
 * Memory: 2048 MB RAM
 * Graphics: OpenGL 2.0 or higher
 * Storage: 500 MB available space