A game seven is the final game of a best of seven series. This game can occur in the postseasons for Major League Baseball (League Championship Series and World Series), the National Basketball Association (all rounds of the NBA Playoffs), and the National Hockey League (all rounds of the Stanley Cup playoffs).
The game is traditionally played at the site of team holding the home advantage across the series.
Because of the final nature of this game, where the losing team is done for the season, game sevens add an element of drama to their sports. Since this is the final game of the series, the winning team advances in the playoffs or wins the championship.
Aside from North American sports leagues, game sevens are also a fixture in many other sports around the world, mostly in baseball, basketball, and ice hockey leagues. Most codes of football do not employ a best-of-seven series (or any best-of-x series in general), hence game sevens are not played in those leagues.