Step 13: The Real Test
Give this game to some children. Get some paper and a host of colored Sharpies and let them go at it. See what they do with it. After observing them for a while, breaking up squabbles, and making them share; think about any improvements or changes in the design you may want to implement. Maybe redesign the teeth for a better fit. Maybe change the ring shape in some way. Keep those mental juices flowing and see what develops. All this work is, after all, really and truly, play.