COOP Knock "Em Off is an action-packed outdoor game you can play at home, in the park, or at the beach! To play: Set-up the targets and balance the balls on top. While one team throws the disc attempting to knock off the balls on the other teams target, the opposing team tries to catch all the balls before they hit the ground. Balls that hit the ground earn points, and caught balls reduce points. Each color of ball has a different point value. The first team to score exactly 21 points wins. Target height is adjustable so you can increase or decrease the difficulty of the game according to players" ability. Each game set includes: 1 flying disc, 2 adjustable height targets, 6 balls and game instructions.