Never before have the forces aligned. United by name and by cause, The Fallen, Pagans, Crusaders, Intruders, and Stroggs must channel their power into an allied operation where teamwork is the only method of mass destruction. Four distinct games test each troop's synthesis and strength to exacting degrees. Cooperation is the only course of action, and war, the only alternative. Soldiers once alone in their struggle, now face the Arena as one.

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 "MY GAMES" tab and start downloading.