Pinball is a type of arcade game, in which points are scored by a player manipulating one or more steel balls on a play field inside a glass-covered cabinet called a pinball table (or "pinball machine"). The primary objective of the game is to score as many points as possible. Many modern pinball machines include a storyline where the player must complete certain objectives in a certain fashion to complete the story, usually earning high scores for different methods of completing the game. Points are earned when the ball strikes different targets on the play field.