Solid submission, congratulations. Nice physics-based puzzles and there was a good amount of variety for a game jam entry. Personally, I felt the game didn't really hard enough into the 'scale' aspect; I didn't feel like my actions were causing things to get bigger or smaller, rather that was the natural consequence of putting more stuff into the play area. Purely subjective and you are others are welcome to disagree haha. I do think a design space could be explored if the players were able to manipulate the size/scale of the objects though...
Overall, I had a great time with the game and kudos for getting in a number of levels - always the challenge with puzzle games in game jams haha.