Abstract: A game apparatus comprising a square board with vertical, horizontal, and diagonal slots crossing in sixteen intersections, and twelve cubical playing pieces in six duplicate pairs distinguished by the different forms and arrangements of raised strips upon their plane surfaces which fit into the intersections of slots upon the board such that the cubical playing pieces rest freely movable without touching, so that they maybe easily arranged. The object of the game is to place all of ones share of the cubical playing pieces upon the board in such a manner that the confronting plane surfaces of cubical playing pieces resting upon the immediate intersections bear raised strips which agree with one another as an image in a mirror agrees with the object confronting it. There is a provision for the rolling of the cubical playing pieces during the game, and there are restrictions against turning them.