The man riding on the half moon will go toward downside of the screen automatically. But If he will go out of the screen, the game will be over. So you have to let go toward upper side by tapping the iPhone screen. However, if you continue to push the screen too long, he will continue to go up and disappear. If that occurs, the game is over, too. And you have to be careful not to hit the bananas coming from the right hand side.