Abstract: The present invention relates to a game including a set of pieces having different outlines or otherwise differently configured whereby each is engageable into an individual location on a playing surface e.g. by insertion therein. A set of display elements each associated with one of the locations may be activated to indicate visibly when a piece is to be engaged with its associated location. A switch associated with each location is so arranged as to be operable when, and only when, the piece of the correct configuration is engaged in the location. An electrical operating circuit activates the display elements successively in an initial period and then activates only one display element. When the correct piece is engaged with the location corresponding to the activated display element the control circuit responds by deactivating the display element or by adjusting the sound from a sound source.