Abstract: A game mechanism is described in which a plurality of tracks are advanced by pawl mechanisms. Associated with each track is a program ring which modifies the rotational advancement of the track which would otherwise be obtained through advancement of the pawl.

Abstract: A three-dimensional mathematical game comprises a stacked array of rotatable transparent or translucent plates, each plate being rotatable about a common vertical axis, the plates carrying indicia thereon such that when the plates are viewed through one of the top or bottom plates, there will appear to be a plurality of vertical rows of indicia. The indicia are arranged to represent a field of numbers in some numbers system to the base 2 or higher, and the game is played by rotating the plates to go from one number configuration to another.