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Macintosh
Business Model Attribute Image Commercial
Minimum OS Class Required Attribute Image Mac OS X 10.8 (Mountain Lion)
Minimum RAM Required Attribute Image 4 GB
Media Type Attribute Image Download, Attribute Image DVD-ROM
Minimum Video Memory Required Attribute Image 1 GB
Input Devices Supported Attribute Image Keyboard, Attribute Image Mouse
Number of Offline Players Attribute Image 1 Player
Steam Achievements, Steam account required, Trading cards
Miscellaneous Attributes One-time activation

Windows
Business Model Attribute Image Commercial
Minimum OS Class Required Attribute Image Windows Vista
Minimum RAM Required Attribute Image 4 GB
Minimum DirectX Version Required Attribute Image DirectX 9.0c
Media Type Attribute Image Download, Attribute Image DVD-ROM
Minimum Video Memory Required Attribute Image 1 GB
Video Modes Supported Full screen
Input Devices Supported Attribute Image Keyboard, Attribute Image Mouse
Number of Offline Players Attribute Image 1 Player
Steam Achievements, Steam account required, Trading cards
Miscellaneous Attributes One-time activation


Technical information contributed by Evolyzer (18870) and jaXen (257736)