Thank you so much for playing and leaving such great feedback! More modes are definitely something I'll look into and were part of the game's scope initially but I had to cut them due to time. I agree that the controls absolutely need some tweaking and I'm totally going to revamp them entirely in the near future. As for the missing keys, I guess WebGL just doesn't like the arrow symbols I used since they don't show up on the main screen as they do in the screenshots either.