Thanks for your feedback. Yea, I don't know how to make it more obvious the red squares are balls at the beginning. Let me know if you have any CSS/design cho

Thanks for your feedback. Yea, I don't know how to make it more obvious the red squares are balls at the beginning. Let me know if you have any CSS/design chops here and can suggest an implementation. I added the restart button and high score saving. The undo is going to require significant rework since instead of just updating ball positions I would have to track history. I will consider it if I rewrite the game for performance reasons.