Abstract: A board game defines a plurality of playing positions in the form of a gridwork including a plurality of discrete, electrically isolated, metal frames, each frame enclosing one of the playing positions and supporting a translucent coextensive window. Playing pieces, some being of different types, are movable between playing positions in accordance with a predetermined pattern dependent upon their type and influenced by the locations of other playing pieces. A regulating system selectively alters a sensible characteristic at each of the playing positions to thereby alter an attribute of a playing piece which lands on a certain one of the playing positions. This is done by successively illuminating each of the playing positions by means of one or more colored electric lamps or by providing no illumination at all.