This looks fun, but I want to walk you through what I did when I saw the page. I started clicking on circles thinking I could move them by clicking. I saw the k

This looks fun, but I want to walk you through what I did when I saw the page. I started clicking on circles thinking I could move them by clicking. I saw the key commands, but thought, "No, I'd rather use the mouse. I'm not one of these power users that uses the keyboard for everything." But I couldn't click and drag. I could only click to select and then nothing would happen. You should make it more clear that the user needs to use the keyboard for anything to happen. Either that or ignore the mouse so the user says to themself, "Oh, this only works with the keyboard." As it is now, it's just really really confusing to a new user who isn't obsessed with always using the keyboard.