Game: Edge

In Malcolm Gladwell's book Blink, he proposes that humans actually tend to make up their minds about something within the first two seconds of perceiving it. Everything else is just elaborate justification for those first two seconds: whether or not you got the job in an interview, what colour of car you like, or what sort of pet you're going to get. I don't know if it absolutely holds true for video games, but I did decide that I loved Mobigame's Edge in roughly two seconds. The luminous brilliance of this perfectly realized puzzle game is apparent right from the start.