A really solid platformer. Not only do you teach the simple mechanics of shrink and grow, but you added layers of complexity by making a zoom jump, where you have to quickly change from big to small to get faster speed and less collision. You confirm that the player knows how to move exactly as you want them to, and that is shown through your smart level design. Also I like that you had an adjustable music slider at the beginning, that is good forethought. Well done!