Flashback to 2007. Fans were eagerly anticipating to get their hands on Valve's Portal as it promised to deliver an entirely new approach to first-person shooters. Two of these fans were so looking forward to play the game, they took it upon themselves to create their own version of Portal in a completely different format. The result is Portal: The Flash Version, and though it's only presented in two dimensions, it proved to be something hugely successful. IGN recently had the chance to chat with the two creators, Hen Mazolski and Ido Tal, about making the game, their influences and the challenges in their way when creating this take on Portal.