Portal 2 - The Final Hours is a digital book that takes you deep within the top-secret offices of Valve for an unvarnished look at the creative process behind Portal 2.

Break the laws of spatial physics in ways you never thought possible, with a wider variety of portal puzzles and an expansive story that spans a single player and co-op game mode.

Purchase your copy of Portal 2 now. Several outlets around the world are offering special pre-order incentives including special pricing and exclusive in-game content.

Apr 19, 2011 · The highly anticipated sequel to 2007's Game of the Year, Portal 2 is a hilariously mind-bending adventure that challenges you to use wits over weaponry in a funhouse of …

1 day ago · A Portal 2 CD Key, or Portal 2 STEAM Key, is a digital code that allows you to download Portal 2 directly to your PC via the Steam platform. Once redeemed in your Steam …

4 days ago · The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers.