The flippers are one or more small mechanically or electromechanically controlled levers, roughly 3 to 7 cm in length, used for redirecting the ball up the playfield. They are the main control that the player has over the ball. Careful timing and positional control allows the player to intentionally direct the ball in a range of directions with various levels of velocity. With the flippers, the player attempts to move the ball to hit various types of scoring targets, and to keep the ball from disappearing off the bottom of the playfield. The very first pinball games appeared in the early 1930s and did not have flippers; after launch the ball simply proceeded down the playfield, directed by static nails (or "pins") to one of several scoring areas. (These pins gave the game its name). In 1947, the first mechanical flippers appeared on Gottlieb's Humpty Dumpty[23] and by the early 1950s, the familiar two-flipper configuration, with the flippers at the bottom of the playfield above the center drain, had become standard. Some machines also added a third or fourth flipper midway up the playfield.
The new flipper ushered in the "golden age" of pinball, where the fierce competition between the various pinball manufacturers led to constant innovation in the field. Various types of stationary and moving targets were added, spinning scoring reels replaced games featuring static scores lit from behind. Multiplayer scores were added soon after, and then bells and other noise-makers, all of which began to make pinball less a game and more of an experience. The flippers have loaned pinball its common name in many languages, where the game is known mainly as "flipper".