Minimum System Requirements
Windows
OS:
Windows XP, Windows Vista, Windows 7 or Windows 8
Processor:
2 GHz dual core
Memory:
2 GB RAM
Graphics:
NVIDIA GeForce 8000 series or ATI Radeon HD 2000 series or better
Storage:
17 GB available space
Notes:
Version 9.0c; 100% DirectX 9.0c compatible sound device
macOS
OS:
10.8.5
Processor:
2.0Ghz
Memory:
4 GB RAM
Graphics:
512MB
Storage:
25 GB available space
Notes:
The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, Intel HD3000, NVIDIA 7xxx series, NVIDIA 8xxx series, NVIDIA 9400 and NVIDIA 3xx series. The following cards require you to have 8GB of system RAM: Intel HD4000.
Recommended System Requirements
Windows
OS:
Windows 7 or Windows 8
Processor:
AMD Phenom II X4 or Intel Core 2 Quad or better
Memory:
2 GB RAM
Graphics:
AMD Radeon HD 5850
Storage:
17 GB available space
Notes:
Version 9.0c; 100% DirectX 9.0c compatible sound device
macOS
OS:
10.9.2
Processor:
2.4Ghz
Memory:
8 GB RAM
Graphics:
1GB
Storage:
25 GB available space
These are the requirements the publisher lists on Steam.
