Great job! I though the size mechanics were fun and interesting, and the puzzles were well designed. There were some things that I found frustrating: I don't think the boxes need to have any physics rotation - it just allowed them to constantly get stuck or bounce in undesirable ways. Another is that the gaps used for 'threading the needle' were unnecessarily small, and prompted a lot of resets for me on the last puzzle. Lastly, the player physics/gravity is a bit floaty, and I would get impatient sometimes just waiting to land so that I could try my jump again. But again, all that said, great job! Those frustrations were borne from wanting to complete the puzzles because they were so fun :)