A 2 player game played in the box. Probably early 70s. 12 plastic chips (3 each in red, blue, yellow, and green) are randomly placed in a 3x4 plastic insert. Players take turns placing 1 of the 6 domino-like tiles (each of which contains two of the colors). Each placement of a remaining tile must cover the two matching colors. The player who places the last tile wins. —user summary