Pete Hines twitted on Twitter:

Recommended PC specs

• Windows XP/7

• Quad-core Intel/AMD CPU

• 4GB RAM

• 6GB Hard Drive

• DX compat snd card

• DX9 video card w/ 1 GB

• GTX 260/Radeon 4890 or higher

Min PC specs

• Windows XP/7/Vista

• Dual core 2GB

• 2GB RAM

• DX9c video card w/ 512MB RAM

• Internet Access for Steam activation