Doom 3 Game Keys

Go to: http://store.steampowered.com/ and download STEAM client
Click "Install Steam" (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don't have).
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.
After successful code verification go to the "LIBRARY" tab and start downloading.

The gripping expansion pack for DOOM 3 takes your even further into the the DOOM universe. Two years following the unexplained disaster on Mars, the UAC returns to the abandoned facility to investigate a mysterious beacon buried deep in the ruins of the ancient civilization. Features Battle six new demons including the hunters Fight in all new 8-player capture the flag arenas Wield new weapons including the double barreled shotgun Possess demonic powers to use against the enemy Control time to defeat the enemy and evade deadly traps Harness the force of gravity to control your environment Battle through the ancient ruins and into the horrifying depths of hell