There are several professional eight-man football leagues in the United States, due to the eight-man format being adopted by most indoor football leagues. These leagues typically use a by roughly field, as professional eight-man football is usually played indoors. There are some eight-man leagues that play outdoors, however; in Texas the American Eightman Football League (AEFL) plays on a 100-yard field, and in Illinois and Missouri, the Eight Man Football League (8FL) plays on a field. In recent years, organizations that previously played six-man football have been converting to eight-man football, leading to the expansion of the eight-man game.