Linux
Business Model Commercial
Minimum RAM Required 4 GB
Media Type Download
Minimum Video Memory Required 1 GB
Input Devices Supported Keyboard, Mouse
Steam Add-on Content (DLC), Steam achievements, Steam cloud, Steamplay, Steam 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 Add-on Content (DLC), Steam achievements, Steam cloud, Steamplay, Steam 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 Add-on Content (DLC), Steam account required, Steam achievements, Steam cloud, Steamplay, Steam trading cards


Technical information contributed by jaXen (28555), Terok Nor (22568), formercontrib (159965) and Lawrence Matthews (198)