I'm almost certain they've sped up the navigating through the maze for that advert. I will be downloading it. I can't believe I JUST downloaded Go Series Picdun yesterday! GRRRR!
Picdun is a dungeon crawler where you work your way through a maze-like structure down below but up above as the map becomes more fleshed out it will create a pictobits-style picture. I really don't know the significance of the picture you're creating other than perhaps the ability to determine where the maze will end up, but it is a fun romp.