Minimum System Requirements
Windows
OS:
Windows® Vista or better
Processor:
Dual core 2.4 GHz processor or better
Memory:
2 GB RAM
Graphics:
Radeon HD 5000 Series or nVidia GeForce 200 series or better
Storage:
10 GB HD space
Notes:
9.0c; DirectX 9.0c compatible sound
macOS
OS:
MacOS X 10.9 Mavericks or better
Processor:
Dual core 2.4 GHz processor or better
Memory:
2 GB RAM
Graphics:
Radeon HD 5000 Series or nVidia GeForce 200 series or better
Storage:
10 GB HD space
Linux
OS:
Ubuntu 14.04LTS or better (highly recommend non-LTS latest)
Processor:
Dual core 2.8 GHz processor or better
Memory:
2 GB RAM
Graphics:
Radeon HD 5000 Series or nVidia GeForce 200 series or better
Storage:
10 GB HD space
These are the requirements the publisher lists on Steam.
