Two players compete to be the first to place four of their magnets in a line either across, up-and-down, or diagonally--with the added challenge of playing on two boards at the same time! The special playing surface will keep your pieces in place while you play. Players will have fun coming up with new strategies for trying to win this addictive game! Board measures approximately 6 1/2" by 13 1/2" fully opened. Recommended for ages 7 and up.