You play a dentist that has to drill in your patients mouth. Remove all the theeths, except the rotten ones. If you hit rotten tooth, it´ll explode, and you´ll lose the game. When you click a tooth, a number that is warning you how close you are to a rotten tooth, appears. 25 means that you´re not near a tooth. 50 means that a rotten tooth is two teeths away, and 100 means that a there´s a rotten tooth, just next to it.