There's so much polish on this game. From the way the buttons moved to the transition between levels. Top notch stuff. I did not understand what was happening for the five minutes. It took me longer than it should have to realise that the button clicks, as well as changing intensity and colour, also changed the direction. Also, i think without holding down the E button you wouldn't be able to finish any of the puzzles. So maybe you should have gotten rid of the E altogether and just showed the numbers the entire time. Saying that, once I learned what I was doing it was a neat little puzzle game. The music and visuals also reminded me of outer wilds, so top marks for that. Congrats on finishing.