Linux
Business Model Commercial
Minimum RAM Required 4 GB
Media Type Download
Minimum Video Memory Required 1 GB
Input Devices Supported Keyboard, Mouse
Steam Achievements, Cloud, Steamplay

Macintosh
Business Model Commercial
Minimum CPU Class Required Intel Core 2 Duo
Minimum OS Class Required Mac OS X 10.6.4
Minimum RAM Required 2 GB
Media Type Download
Minimum Video Memory Required 256 MB
Input Devices Supported Keyboard, Mouse
Steam Achievements, Cloud, Steamplay

Windows
Business Model Commercial
Minimum CPU Class Required Intel Core 2 Duo
Minimum OS Class Required Windows XP SP3
Minimum RAM Required 2 GB
Media Type Download
Minimum DirectX Version Required DirectX 9.0c
Video Modes Supported 1920*1080, Full screen
Minimum Video Memory Required 256 MB
Input Devices Supported Keyboard, Mouse
Steam Achievements, Cloud, Steamplay


Technical information contributed by jaXen (59808), Yearman (21481) and Jeanne (75342)