Popping the Ball has a very easy task; swing the red ball to pop the white ball before it gets too small. Do not hit the coloured rings or they will spawn greys. The greys block the red ball.
Simply touch the screen to see the red ball move.
Be careful not to let the red ball hit the coloured or grey balls. The grey ones get darker and New grey balls will spawn. They get in your way and you can soon be trapped. Everything gets smaller and it's game over when the white disappears.