This is an amusing arcade game to pair two balls at once. You have to use your phone like a gamepad and select the balls with your thumbs to play. RainBalls help you to coordinate your left and right half brains as will test how you are able to target the two objectves at once. The central board will select two targets, one for right side and one for left side. The targets can be the same or different depending on the level. Then you have to found and click both targets at once.