Everything in the universe tends to disorder, to chaos. . . It’s up to you to make sure that balance is maintained. Keep the areas of all the elements equal to keep the universe in zen. Tap solid circles to increase their size, double tap to decrease. But there are somethings that will remain out of your control. The universe will not stand still. New circles will spawn. Hollow circles will change size on their own. Keep up with the changes as quickly as you can. If the universe is out of zen for too long the game is over.