The Super Bowl is the annual championship game of the National Football League. The game is the culmination to a season that begins in the late summer of the previous calendar year. Normally, Roman numerals are used to each game, rather than the year in which it is held. For example, Super Bowl I was played on January 15,1967, the single exception to this rule is Super Bowl 50, which was played on February 7,2016, following the 2015 regular season. The next game, Super Bowl LII, scheduled for February 4,2018, the game was created as part of a merger agreement between the NFL and its then-rival league, the American Football League. It was agreed that the two champion teams would play in the AFL–NFL World Championship Game until the merger was to officially begin in 1970. After the merger, each league was redesignated as a conference, currently, the National Football Conference leads the league with 26 wins to 25 wins for the American Football Conference. The Pittsburgh Steelers have the most Super Bowl championship titles, with six, the New England Patriots have the most Super Bowl appearances, with nine. The day on which the Super Bowl is played, now considered by some as an unofficial American national holiday, is called Super Bowl Sunday and it is the second-largest day for U. S. food consumption, after Thanksgiving Day. In addition, the Super Bowl has frequently been the most-watched American television broadcast of the year, in 2015, Super Bowl XLIX became the most-watched American television program in history with an average audience of 114. The NFL restricts the use of its Super Bowl trademark, it is called the Big Game or other generic terms by non-sponsoring corporations. As a result, watching and discussing the broadcasts commercials has become a significant aspect of the event, for four decades after its 1920 inception, the NFL successfully fended off several rival leagues. However, in 1960, it encountered its most serious competitor when the American Football League was formed. The AFL vied heavily with the NFL for both players and fans, but by the middle of the decade the strain of competition led to merger talks between the two leagues. Prior to the 1966 season, the NFL and AFL reached an agreement that was to take effect for the 1970 season. As part of the merger, the champions of the two agreed to meet in a world championship game for professional American football until the merger was effected. A bowl game is a college football game. Exploiting the Rose Bowl Games popularity, post-season college football contests were created for Miami, New Orleans, and El Paso, Texas in 1935, by the time the first Super Bowl was played, the term bowl for any major American football game was well established
The Packers defeated the Chiefs in the first AFL–NFL Championship Game (Super Bowl I)
The Jets were the first AFL team to win a Super Bowl (Super Bowl III), defeating the Colts.
The Steelers defeated the Rams in Super Bowl XIV to win an unprecedented four championships in six years.
The 49ers playing against the Dolphins in Super Bowl XIX.