For the open source category, you'll need to have a README file and License file.
Music is super funky and getting me in the vibes. Would be good to start with a tutorial level or similar rather than just reading all the instructions. Interesting take on the theme. Be great to have some sound effects when you collect the items. I wasn't sure exactly how I was "breaking" the game, ie. when the seesaw broke, it wasn't immediately clear why this was happening.
Would also be cool to have a leaderboard or similar to track progress, or maybe a high score. Great job on this game, was fun to play; I didn't get high enough for a plane or helicopter though 😅.