Portal 2 - Xbox 360 | Valve

Portal 2 - The Ultimate Puzzle-Solving Experience! Experience an extensive single player game with next generation gameplay and a wildly engrossing story that will keep you on the edge of your seat.

Complete two-person cooperative multiplayer game featuring its own dedicated story, characters, and gameplay for even more fun! Advanced physics allow for the creation of a whole new range of interesting challenges, making this game larger but not harder.

Enjoy original music that complements the game's atmosphere perfectly.

This massive sequel to the title named 2007's Game of the Year by over 30 publications worldwide is sure to provide countless hours of entertainment for puzzle-solving enthusiasts of all skill levels!