In 1958 Milton Bradley Company produced a board game based in part on the card game crazy eights. In that game, a player must follow either the suit or the number of the previous card. In this board game, players lay tiles marked for animals and colors along the game's path, in "cages." They must match either the animal or the color of the previous tile laid. To add to the fun, all monkey tiles are wild cards. An adult version allows for a point-accumulation system.