When Portal was first released back in 2007, it recieved world wide critical acclaim and is one of my personal favorite games. Its clever puzzles, interesting design, and witty dark humor made it a gem of a game. Today Valve confirmed that there will be yet another Portal game due out for release holiday of this year. We know very little so far other then that it is being released for the PC and 360 and that the maniacal computer GLaDOS will return. Also, a recent piece of DLC has changed the ending for the game with the cryptic ending seen below...