Interesting game! It would be super nice if we could restart at a given level. I got myself stupidly stuck at some point and had to restart the game all over.
The control panel is a really good idea but where it is positioned you're losing screen space and it's not very easy to read. I would make it more concise and move it where it does not use valuable space.
I think these small additions would greatly improve the game's lifetime! Keep up the good work!
Edit: If you could rate my game, that would be super nice too!