MINIMUM:

OS: Windows® XP
Processor: 2GHz Dual Core Processor (Intel Core 2 Duo or AMD Athlon™ X2) or higher
Memory: 2GB System RAM or more
Graphics: 320MB Video RAM, GPU w/ Shader Model 3.0 support, NVIDIA® GeForce® 88xx series or better, ATI Radeon™ HD30xx series or better
DirectX®: 9.0c
Hard Drive: 7.5 GB
Sound: 100% DirectX® 9.0C compliant sound card or equivalent onboard sound

RECOMMENDED:

OS: Microsoft® Windows® 7
Processor: Any Quad Core Processor(Intel® Core i5 or AMD Phenom™ II X4) or 3.0+ Dual Core CPU
Memory: 4GB System RAM or more
Graphics: 1GB Video RAM, GPU w/ Shader Model 4.0 support, NVIDIA® GeForce® GTX 400 series or better, ATI Radeon™ HD5000 series or better
DirectX®: 11
Hard Drive: 7.5 GB
Sound: 100% DirectX® 9.0C compliant sound card or equivalent onboard sound

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.