Super polished experience from the art, the zany music, and the gameplay! It really made me feel like I was inserting a cartridge and booting up a retro game. I second what others have said about it being hard to differentiate between some of the colors for the rings. Also, I thought the game design was nice in the sense that you can build up progress and lose it as much as you want without having to worry about something like a lives system. It was cool that your "health bar" was tied to your progression so that you can always make a comeback.