A game machine includes: an entertainment button that can move up and down from a normal operation position to a protruding position; a display part that displays characters associated with a game; a character determining part that determines a character to be displayed on the display part; a movement determining part that determines whether or not to move the entertainment button from the normal operation position to the protruding position; a drive control part to move the entertainment button from the normal operation position to the protruding position, when the movement determining part determines to move the entertainment button from the normal operation position to the protruding position; a push operation detecting part that detects the entertainment button being pushed down; and an enabling determining part that determines, when the push operation detecting part detects the entertainment button being pushed, whether or not to enable the detected push operation.