To provide a control method for not causing a deviation even when a plurality of same performances are displayed.

Mobile bodies 210a, 210b, and 210c for announcing information are arranged on the front surface of a decorative symbol display 110. A performance image to be displayed in accordance with the mobile body 210a for announcing information, which is separated by T in a left direction from the viewpoint of a player, is deviated to a left side by Mtan from the display position of the mobile body 210a for announcing information.