The Gnip Gnop Vintage 1971 Parker Brother Slap Happy Game is a classic skill and action game that can be played by 2 players. This strategy-themed game, designed by Parker Brothers in the United States, is perfect for kids aged 8 and above, as well as older teens and adults. With a fun and interactive playstyle, this game is a nostalgic piece of vintage entertainment that is sure to bring hours of joy to both boys and girls alike. Missing red piece on one side.