that's really fun!
But when I try to do it again without closing and re-opening the game, the first 3 arrows of the first stage are missing visually (neither arrows nor the place-indicating circle appear but I still have to guess which they are and press them) and then on the 3rd from the last (3rd from right, bottom row) the game takes me back to the beginning of the stage and (once I get past the missing 3 arrows) there are two place-indicating circles.
I'm guessing that's a glitch.
Other than that (which is minor, really, since it's not too hard to open and close a window), this is really fun!!