The present invention is to provide an effect with its high entertainment property. Those which are printed in a superimposed manner on the effect panel 813 are: the first picture 813a that is printed in an ordinary manner with the use of color ink (such as silk printing or offset printing, for example); and the second picture 813b that is printed with a polarizing pearl ink with its higher light transmission property than that of color ink. Further, the lamp 813c is disposed on a rear side of the effect panel 813, and light is emitted to a rear face of the effect panel 813 at higher luminance than that of external environmental light in accordance with the progress of game.