Built during the 1920s as a children's toy Pachinko game machines were based on an American game.
Pachinko emerged as an adult pastime around the 1930's. Japan's pachinko parlors were closed down during WWII, but re-emerged in the late 1940s and became popular. Taiwan also has many pachinko establishments due to Japan's influence during their occupation in the early 1900s.
Until the 80's, pachinko machines were mechanical devices. These machines are gravity-fed, meaning that the balls always flow downward, except when powered by a human: either the player shooting a ball, or an employee opening up the cabinet and putting more balls in the feeder bin at the top. When the player wins, a bell is rung by the mechanical action of the newly acquired balls flowing through the machine. Electricity (10 volts DC) is used only to flash a light when the player wins and to indicate problems, such as a machine that has been emptied of its balls.
The player launches balls using a chrome flipper, and can control the speed of the balls to some extent by pulling the flipper down to different levels. The front panel has a tray for balls that are ready to be played, a tray into which balls can be emptied when the player is ready to quit, and an ashtray. Manufacturers in this period included Nishijin and Sankyo. Most machines available on online auction sites today date to the 1970s.
Starting around 1980, pachinko machines began to incorporate more and more electronic features, and began to require electricity for operation. Rather than a mechanical chrome flipper, these machines have a round knob that can be rotated to control the speed of the balls.