Remember when Valve drummed up the arrival of Steam for Mac by releasing a series of teaser images to the press? They’re doing it again with new teasers that form a puzzle which hints at Portal Alternative Reality Game’s Portal 2. As you know, the game is set to launch simultaneously via Steam for Macs and Windows PCs on April 19. has collected all teasers that Valve’s co-founder Gabe Newell has been sending to the media. Each individual image forms a part of the Portal 2 teaser puzzle, shown above. Being a fan of the original Portal game, I’m looking forward to playing Portal 2 on my Mac and PC. The game will be also released for the Xbox 360 and PlayStation 3 as well.


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