Donkey Kong Jr. (also spelled Donkey Kong Junior in early arcade releases and home ports) is a video game for the arcades. It was released in 1982 for the arcade and for the Famicom on July 15, 1983 in Japan, in June 1, 1986 for the United States of America, and June 15, 1987 in Europe; for the Famicom System in July 19, 1988 and for the Virtual Console on December 2, 2006 for Japan, on December 4, 2006 for the United States of America, and December 22, 2006 of Europe.
This game is the sequel to Nintendo's hit game Donkey Kong. In this game, the player is Donkey Kong's son, who is named "Donkey Kong Jr." and has to rescue his father, who is in a cage next to an exhausted Mario, and get revenge on Jumpman/Mario. Despite Mario being a protagonist in countless other Nintendo games, this is one of the few (if not the only) where Jumpman/Mario is the antagonist.