
True fans insist that Portal was already a co-op game.
Valve has announced that it will issue a sequel to Portal, its innovative and satirical puzzle platformer, before the end of 2010. Portal 2 will be a stand alone product, unlike the original, which was one of five games included with Valve’s 2007 anthology The Orange Box.
Details on the game are currently scarce, but Game Informer has revealed that it will feature a dedicated cooperative campaign in addition to the single player storyline. Arch villainess GLaDOS is set to return in some capacity and at least some of the action will take place in previously unseen areas of the now infamous Aperture Science facility.
The promise of co-op centric puzzles should be particularly well received by those wary of a retread.
Valve informed Eurogamer that Portal 2 will be released on PC and Xbox 360 during the 2010 holiday season. There has been no word as yet on the potential for a PlayStation 3 version of the game. Valve’s Chet Faliszek recently told CVG that the company was dissatisfied with the quality of its PS3 output.

















