You have a README which is great, but you'll need a License file as well (these are two main criteria for open source category). Great README though.
I'm really getting "Who sank the boat?" vibes from this game 😅. The physics in this game had me laughing so good - love that the animals just all fall off or rather yeet'ed off.
Sound effects are hilarious and would love to see some music for this game (would make it so much funnier too depending on what you chose). Great take on the theme. It's funny, but also maybe a glitch(?) that the animals from the previous question are still hanging around on the balance. Great submission and really made me laugh lots.