Supplies Moonstone. Tap on the moon when it's full. Many people think there's something wrong with their game after they haven't seen a full moon in a while. It really is just chance though. Sometimes you'll see several in one day, sometimes you won't see any for a while. Chances to see a full moon are also increased when you assist to the moment when night arrives and that the moon starts to show in the sky. Even if you don't need them at the time, collect them anyway whenever you see one.