MINIMUM:

OS: Windows 7 64 bit or Windows 8 64 bit
Processor: Intel Core 2 Quad @ 3.0GHz or AMD Phenom II X4 @ 3.2GHz
Memory: 4 GB RAM
Graphics: Intel 4th Gen Iris Graphics or AMD HD5770 or NVIDIA GTS450
DirectX: Version 11
Network: Broadband Internet connection
Storage: 20 GB available space
Sound Card: DirectX Compatible soundcard

Activating a CD Key on Steam

Please follow these instructions to activate a new retail purchase on Steam:

1. Launch the Steam client software and log into your Steam account.

2. Click the Games Menu.

3. Choose Activate a Product on Steam...

4. Follow the onscreen instructions to complete the process.