Portal 2 is the sequel to the critically acclaimed Portal game, released on the Orange Box. Portal was a short game and received many postive reviews by critics. The game also created a meme, "The cake is a lie" which can be seen on a wall in one of the chambers. Another reason it was popular was because of the humor in the game. You go around solving puzzles receiving help (well not much help really) from a computer AI, GLaDOS. Her dark humor really made the game better and even though she is really evil and out to kill you, you can't help but to love her... or it.
So Portal 2 will take place over 100s of years after the labratory was destroyed at the end of Portal 1. If you have the PC version and you played it recently (probably around March during the last update), you'll receive a different ending. What most people should focus on more is the storyline, it may seem like just a simple puzzle game but if you pay more attention to the surroundings, you can tell there's more than just that.
So at E3 2010, the trailer for Portal 2 was released and a demo was also shown. It will be made for the PS3 and there will be new puzzles, much harder ones than Portal 1 and some new features like the goo and a vacuum.
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