To provide a user with a memorandum function using a picture display device provided in a game machine and effectively use the screen of the picture display device without making the player feel discomfort when the memorandum function is not used.

This game machine displays a performance picture D on a performance display area α of a reel-part display 2a during a game and displays a handwriting input picture H indicating the track input from a touch panel 5 in handwriting on a handwriting display area β. When no game operation is made after the lapse of a prescribed time, an advertisement picture C is displayed on the reel-part display 2a.