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, DLC available, Steamplay, Trading cards

Macintosh
Business Model Commercial
Minimum CPU Class Required Intel Core 2 Duo
Minimum OS Class Required Mac OS X 10.6.3
Minimum RAM Required 2 GB
Media Type Download, DVD-ROM
Drivers/APIs Supported Attribute Image OpenGL
Multiplayer Options Internet
Number of Players: Offline 1 Player
Number of Players: Online 8 Players
Multiplayer Game Modes Co-Op, Free-for-all / One-on-one, Team
Miscellaneous Attributes 3D Accelerator Required
Steam Achievements, Cloud, DLC available, Steamplay, Trading cards

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, DVD-ROM
Minimum DirectX Version Required DirectX 9.0c
Drivers/APIs Supported Direct3D
Video Modes Supported Full screen, WUXGA (1920*1200)
Minimum Video Memory Required 256 MB
Input Devices Supported Keyboard, Mouse
Multiplayer Options Internet
Number of Players: Offline 1 Player
Multiplayer Game Modes Co-Op, Free-for-all / One-on-one, Team
Miscellaneous Attributes 3D Accelerator Required
Steam Achievements, Cloud, DLC available, Steam account required, Steamplay, Trading cards


Technical information contributed by jaXen (88965), Terok Nor (26190), formercontrib (159880) and Vulpine (222)