Thank you! I did find in my own play testing that using the highest dominoes often led to the most buggy behavior, I kinda just hoped it would be good enough for the jam lol, but yeah, you're 100% right with that.
I did try to make the buttons clearer by making them stand out color wise, but I could of maybe improved the level design a bit more to make them more clear.
Glad you liked it overall though! Thanks for the detailed comment :D