An entertainment button device includes: an entertainment button that a player can push; and a button-up-and-down mechanism configured to move the entertainment button up and down from a predetermined normal operation position to a protruding position in which the entertainment button protrudes upward from the normal operation position. The button-up-and-down mechanism includes: a shaft member extending in a moving direction of the entertainment button; a rotating mechanism configured to rotate the shaft member; an engagement part configured to move up and down together with the entertainment button; a convex portion having an inverted trapezoid shape and a concave portion having a traperized shape that are formed on an outer periphery of the shaft member; a spiral guide part formed in a spiral manner on one end of the convex portion in a circumferential direction.