Peter: I just spent some time playing this on real hardware Coco3. What a blast! Great job on your first endeavor into game creation! It definitely has the "JUST ONE MORE" vibe to it.
Two player version is very fun as well - slightly different game as the single player but even more fun.
One very minor suggestion - instead of having to hit Y to start next game, joystick button should to the same. That will save me 1 second per game! ;-)