super creative idea! The reveal at the start is great. I love that there isn't any filler levels, they all bring something new to the table. I wonder if you added some color to the buttons on the tutorial box if it'll be easier to distinguish quicker and make it a little quicker to switch between the rules? - (eg. "SPACE", "A", "D", "G" -- giving each of those buttons different colors).
Really nice work overall!