It’s never less than a pure video game, but it’s often more, and it will no doubt stand as one of the best entertainments in any medium at the end of this year. It’s human: hot-blooded, silly, poignant, irreverent, base, ingenious and loving. It’s the co-op mode, however, that makes this 2011’s first must-play game - even for those gamers that don’t like first-person or puzzle games. Sporting some of the best writing and voice work in years (as well as some deviously designed puzzles), Portal 2’s single-player campaign is superior to its predecessor in every way.

Editing Tools: Portal 2 editing tools will be included.

Advanced physics: This allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.

TWO-PERSON MULTIPLAYER MODE: A new mode adding a whole new twist to the game with a different campaign from the single-player mode.

SINGLE PLAYER MODE: Featuring next-generation gameplay and a wildly engrossing story.

Act competitively, but think cooperatively, Google has many special features to help you find exactly what youre looking for. Everything you though you know from the previous game will be debunked in this game. Search the worlds information, including webpages, images, videos and more. Featuring an innovative single-player puzzle game, with new and fresh puzzle elements as well as a much bigger set of devious test chambers. Portal 2 is a game sequel to the award-winning game, Portal.

Portal 2 source code