NFL Football is one of the four major games played in North America among NBA Basketball, NHL Hockey and MLB Baseball. The National Football League (NFL) is the professional American football league and it’s made up of 32 teams. There are two groups in the NFL, National Football Conference and American Football Conference.Today football is the most popular sport in the USA. The total number of people that attended NFL games in 2015 is 17,510,312. Super Bowl is the most-watched television programs in American history.