A lot good ideas in this, and I especially like the style of the menu. The concept could definitely be built upon in a larger game.

The camera movement at the large size was smooth for me, but at normal and small sizes it jerks around, which is a bit distracting. It seems like there's a region the player has to move beyond to cause the camera to move. Regardless, I enjoyed the platforming sections and the need to skillfully resize in the air sometimes.

Great combined effort from your team!