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Feature

The single-player portion of Portal 2 introduces dynamic characters, fresh puzzle elements, and a larger set of devious test chambers
The two-player mode features a separate campaign with unique story, test chambers, and two new player characters.
Advanced use of physics allow for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.
A massive sequel to the title named 2007's Game of the Year by over 30 publications worldwide.
Players explore areas of the Aperture Science Labs and reunite with GLaDOS, the murderous computer companion.

Description

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, youll once again face off against a lethally inventive, power-mad A.I. named GLaDOS. And this time you wont 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.