Gaelic football is a form of football that originated in former Ireland and has roots going back to the 14th century. It is contested on a rectangular field by two sides of 15 players each, and has similarities to association football. The notable differences are in the number of players per side; the ball can be dribbled and struck by hand; and goals are worth one point if sent over the crossbar of the goal, three if sent under the crossbar into the net.