NES Four Score - 4-Players Adaptor

The 4-Players Adaptor (4人プレイヤーズアダプタ?) was a licensed peripheral released for the Family Computer in Japan by Hori. It is the Famicom's equivalent to the NES Four Score. Its purpose was to allow up to four players to play simultaneously in compatible games by allowing for additional controllers to be connected through the console's expansion port. The adapter also features a switch that allows the first two players to use external controllers as well in lieu of the standard Famicom controllers, giving each player the choice to use an external controller. Many of the titles in Technos Japan's Kunio-kun series supported the adapter.