SYSTEM REQUIREMENTS + ACTIVATION INSTRUCTIONS: 25455PEGI 12English832012-07-30 1. Go to: http://store.steampowered.com/ and download STEAM client. 2. Click "Install Steam" (from the upper right corner)  Download Steam 3. Install and start application, login with your Account name and Password (create one if you don't have).   4. Please follow these instructions to activate a new retail purchase on Steam:     Launch Steam and log into your Steam account.     Click the Games Menu.     Choose Activate a Product on Steam...     Follow the onscreen instructions to complete the process.   If you have any problems regarding key activation, please contact our Live Support.baseRegion FreeRegion freeWindows
OS:Windows XP, Windows Vista, Windows 7 Processor:2GHz Dual Core Memory:2 GB RAM Graphics:NVIDIA GeForce 6800 or ATI Radeon x1950 or better with 256MB VRAM DirectX®:9.0c Hard Drive:9 GB HD space Additional:Broadband Internet connection recommended for co-op play.