The Norwegian Premier League, officially known as Eliteserien, is the top professional football league in Norway. Established in 1937, it features 16 teams competing annually for the championship title. The league operates on a promotion and relegation system with the 1. divisjon, the second tier of Norwegian football. Matches typically run from April to November, with each team playing 30 games in a round-robin format. The team with the most points at the end of the season is crowned the champion, while the bottom teams face relegation. The league is known for its competitive nature and has produced several notable players and clubs.