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Linux
Business Model Attribute Image Commercial
Minimum RAM Required Attribute Image 2 GB
Drivers/APIs Supported Attribute Image OpenGL
Media Type Attribute Image Download
Sound Capabilities OpenAL
Input Devices Supported Attribute Image Gamepad
Number of Offline Players Attribute Image 1 Player
Steam Achievements, Cloud

Macintosh
Business Model Attribute Image Commercial
Minimum CPU Class Required Attribute Image Intel Core Duo
Minimum OS Class Required Attribute Image Mac OS X 10.8 (Mountain Lion)
Minimum RAM Required Attribute Image 2 GB
Media Type Attribute Image Download
Steam Achievements, Cloud

Windows
Business Model Attribute Image Commercial
Minimum CPU Class Required Attribute Image Intel Core 2 Duo
Minimum OS Class Required Attribute Image Windows XP
Minimum RAM Required Attribute Image 2 GB
Minimum DirectX Version Required Attribute Image DirectX 9.0c
Drivers/APIs Supported Pixel Shader 2.0
Media Type Attribute Image Download
Minimum Video Memory Required Attribute Image 128 MB
Input Devices Supported Attribute Image Keyboard, Attribute Image Mouse
Number of Offline Players Attribute Image 1 Player
Steam Achievements, Cloud


Technical information contributed by CrankyStorming (3007) and jaXen (239786)