The Orange Box is a bundle that includes five titles from Valve: Half-Life 2; Half-Life 2:Episode 1; Half-Life 2: Episode Two; Team Fortress 2, the sequel to the game that put class-based, multiplayer team warfare on the map; and Portal, the game that blends puzzles, first person action, and adventure gaming to produce an experience like no other.

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.