SwimWays Magna Disc Challenge is a fun backyard game just might get everyone to put down their screens for a few hours. COOP Magna Disc Challenge is a disc game for two to unlimited players. The goal of the game is for each team to score exactly 21 points by knocking off the targets with the flying disc. Each target has a different point value. Additional game play factors add to the challenge, such as rotating targets, what the opposing team scores each round, and distance to target. The game components are simple to set up, making it a great game for families on the go.