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 diabolical science. Using a highly experimental portal device, you'll once again face off against a lethally inventive, power-mad A.I. named GLaDOS. And this time you won't be alone. Meet an expanded cast of characters as you think your way through dangerous, never-before-seen areas of Aperture Laboratories. 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-operative game mode. Portal 2 is a unique first-person Action-Puzzle-Platforming game that tests player's ability to think and act creatively as they use the game's ingenious wormhole creating portal gun to produce their own paths through otherwise sealed surfaces and across the open spaces of the game. Sequel to the original Portal game -- the surprise add-on hit included in Valve Corporation's 2007 release The Orange Box -- Portal 2 continues the storyline from the first game, featuring both new and returning characters, and poses a range of new challenges making for a much deeper game. Additional features include a new two player co-op mode and an original soundtrack. Portal 2 game logoAn old test chamber from Portal 2Enjoy an expanded storyline as you return to Aperture Laboratories to match wits with GLaDOS. View larger. Atlas and P-body from Portal 2New characters and functionality expand the Portal gameplay experience. View larger. Welcome Back to Aperture Laboratories In Portal 2 players awake in the Aperture Science Labs as Chell, the heroine of the original game. A great expanse of time has passed since the conclusion of the first game and the gameworld has fallen into visible disrepair, but placed in suspended animation, Chell has survived intact and is revived. With the ...