Minimum System Requirements
Windows
OS:
Windows Vista / 7
Processor:
Intel Dual-Core 2.6 GHz / AMD Dual-Core Athlon 3.0 GHz
Memory:
2 GB RAM
Graphics:
SM 3.0 with 512MB VRAM; NVIDIA GeForce 8500 GT / AMD Radeon HD 4650 or greater
Storage:
2 GB available space
Notes:
Version 9.0c; DirectX Compatible; Keyboard and mouse with mouse-wheel.
macOS
OS:
Mac OS X 10.6 Snow Leopard
Processor:
Intel Dual-Core 2.4 GHz
Memory:
2 GB RAM
Graphics:
NVIDIA GeForce 640M / ATI Radeon HD 5750 with at least 512MB VRAM
Storage:
2 GB available space
Notes:
Keyboard and mouse with mouse-wheel.
Linux
OS:
Ubuntu 12.10 LTS
Processor:
Intel Dual-Core 2.9 GHz / AMD Dual-Core 3.5 GHz
Memory:
2 GB RAM
Graphics:
SM 3.0 with 512MB VRAM; NVIDIA GeForce GTX 550 Ti / AMD Radeon HD 6670 or greater
Storage:
2 GB available space
Notes:
Keyboard and mouse with mouse-wheel. To run the game on a 64-bit system you have to install the 32-bit libraries. (sudo apt-get install libgtk2.0-0:i386 libpangox-1.0-0:i386 libpangoxft-1.0-0:i386 libidn11:i386 libglu1-mesa:i386, sudo apt-get install ia32-libs)
Recommended System Requirements
Windows
OS:
Windows 7 or higher
Processor:
Quad-Core Processor
Memory:
4 GB RAM
Graphics:
SM 3.0 with 1GB VRAM; NVIDIA GeForce GTX 280 / AMD Radeon HD 4830 or greater
Storage:
2 GB available space
Notes:
Version 9.0c; DirectX Compatible; ONLY XBOX 360 CONTROLLER SUPPORTED
macOS
OS:
Mac OS X 10.9 Mavericks or higher
Processor:
Quad-Core Processor
Memory:
4 GB RAM
Graphics:
NVIDIA GeForce 640M / ATI Radeon HD 6750M with at least 1GB VRAM
Storage:
2 GB available space
Notes:
ONLY SONY DUALSHOCK®3 CONTROLLER SUPPORTED
Linux
OS:
Ubuntu 13.10
Processor:
Quad-Core Processor
Memory:
4 GB RAM
Graphics:
SM 3.0 with 1GB VRAM; NVIDIA GeForce GTX 770 / AMD Radeon HD 7970 or greater
Storage:
2 GB available space
Notes:
Proprietary GPU drivers installed. To run the game on a 64-bit system you have to install the 32-bit libraries. (sudo apt-get install libgtk2.0-0:i386 libpangox-1.0-0:i386 libpangoxft-1.0-0:i386 libidn11:i386 libglu1-mesa:i386, sudo apt-get install ia32-libs)
These are the requirements the publisher lists on Steam.
