The art is great and I really enjoyed exploring the levels and discovering all the secrets. Rotating the level and zooming out are great mechanics that really aid the exploration. Only two minor criticisms: the jump is a bit too floaty (maybe increase the gravity value just a little bit) and the visual gaps between platforms can be a little big. Sometimes I wasn't sure whether I could (or was supposed to) squeeze my character through them. Increasing the size of the character by about half probably would have helped to create a bigger contrast between the size of the gaps and of the character.
But overall, great game!