Portal 2 - Xbox Mooch

Xbox 360 Portal 2'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. Portal 2 for Xbox 360 features: Extensive single player game featuring next generation gameplay and a wildly-engrossing story. Complete two-person co-operative multiplayer game featuring its own dedicated story, characters, and gameplay.

Advanced use of physics allow for the creation of a whole new range of interesting challenges, producing a much larger but not harder game. Original music. A massive sequel to the title named 2007's Game of the Year by over 30 publications worldwide.