US Patent 10019873 Game machine, game control method, and computer program

A game machine is provided with a center unit which holds a lottery to select at least one option from a plurality of options by a relative movement between a roulette ring having a plurality of pockets corresponding respectively to the plurality of options and a ball and a center monitor which makes predetermined effects to a lottery in the center unit. The game machine controls the center monitor so as to make the effects when a temporal condition which is a lapse of a predetermined time after the lottery is started and a positional condition under which a JP pocket corresponding to a specific option among the plurality of options and the ball are in a predetermined positional relationship are satisfied.