Portal 2 is a 2011 puzzle-platform video game developed by Valve for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. Editing Tools: Portal 2 editing tools will be included.Massive sequel: The original Portal was named 2007’s Game of the Year by over 30 publications worldwide.Advanced physics: Allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.Complete two-person co-op: Multiplayer game featuring its own dedicated story, characters, and gameplay.Extensive single player: Featuring next generation gameplay and a wildly-engrossing story.Success will require them to not just act cooperatively, but to think cooperatively. This new mode forces players to reconsider everything they thought they knew about portals. The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters.
