Here is one you do not see every day. This is a Gottlieb Challenger from 1971. Only 110 of these were produced back in the day. How many are still around now … head-to-head pinball game with two players at opposite ends of the playfield, simultaneous soccer like play, can not be played with one player. Each player has flipper buttons which control only those flippers facing the opponent. Ball enters play from between the flippers. Game has 8 flippers and vertically mounted score reels. The playfield actually tilts towards and away from the players, depending on which end served the ball.