You are looking at XBOX 360 game Portal 2.

'Portal 2 is an accessible, clever, and downright hilarious adventure into the eccentric world of Aperture Science. 9/10!' - Gamespot

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following.

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.

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. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally murderous computer companion who guided them through the original game.

The game's two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively, but to think cooperatively.

The advanced use of physics allow for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.

Check out the trailer video:

http://www.youtube.com/watch?v=s79wHKe3DDM

Publisher: Valve

Genre: First-Person Shooter

Released: 2011

Comes complete and in as new condition!