Cool game! Mechanics are simple but intuitive, works very well in scope of puzzle and platformer. Visuals and overall style is cool, consistent and charming, I especially like implementation of shadows and background ambient animations. I find this game quite difficult, once you've realised the puzzle solution, the platforming part keeps you from progressing for a long time. I'm not sure your control scheme is best, you use arrows for movement so could as well used up arrow for jump to keep all controls it in two tight islands on keyboard, and using D for upscale and A for downscale seems more intuitive to me. Also I would appreciate highlighting exit before it appears, as now I don't know where exit will appear when I start a level. Aside from that, great take on the theme, nice game, good job!