While you are playing, obstacles bounce around overhead. Depending on the level of difficulty, there may be one or two bouncing dice, or spinning point sticks that can only be avoided by jumping over them. If you are hit by anything, you are temporarily stunned. Hammering a button on the right of the screen will sort all of your tiles, allowing you to more easily assess your hand. Pressing the "ron" button on the left will complete the level if you have a valid hand. Otherwise you lose a life.