Ever had a panic attack concerning scale when you were younger (or maybe older)? Did you imagine you were too small while the world around you was huge? Or that you were a giant? Did you ever try to figure out infinity in size?
That's the idea behind this game: your character can change size at any given time, so you can overcome hurdles. Some puzzles can even be skipped with some clever resizing, while changing scale can reveal new, unseen ones. Quite brilliant I must admit.
Also, heads up for Unity - hope it knocks crappy Flash/Actionscript out of the picture in the future :). It uses far less resources than flash and it even does 3D!