I played and absolutely LOVED Portal 2! Twice! Once just regular and the second time with commentary. Shame on all of you who found boredom in it! I did put it down one or two times out of frustration with some difficulty of the challenges, BUT when the solution came to me, it was like "DUH!" THAT being said, I do not play it anymore for 2 reasons. 1) I just don't have the time right now, and 2) The entertainment of puzzle games like Portal 2 is limited. If you know the solution to a puzzle, you have no more fun solving it. This is the reason I do not solve the same Sudoku puzzle over and over again and have put down the Rubik's cube after solving it for the five-thousandth time. I am glad to hear that expansions are coming. More puzzles=MORE FUN! Again, I absolutely love the game and would say it's game mechanic concept is unmatched by anything and it is a story-telling masterpiece.