Nice work! I love the elegance of this idea and the art is super cute. I think there's some good puzzle ideas in here. The gravity switcher thing with the arrows is a cool idea. I wonder if the level order could use some tweaking. For example, the first real puzzle (level 4 I think?) introduces the gravity switcher, a cube, and a disappearing platform all for the first time, which was a little confusing. But overall I think the big picture design is nice. Good job!