A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. The display device may include a plurality pixels arranged therein. The conductive member includes silver and at least a portion of an upper surface of the conductive layer is covered with a covering layer. The movable core is disposed so as to enable the step and one end portion of the small diameter section near the spring to contact with the inside wall of the hollow portion of the fixed core. Thus, a decorative multilayer material having high acoustic absorbing capability, processability, lightweightness, rigidity, heat resistance, thermal formability, recyclability, and designability can be provided at low cost.