Donkey Kong Jr., also spelled Donkey Kong Junior in early arcade releases and home ports, is an arcade game starring Donkey Kong Jr., that was later re-released as a standalone Nintendo Entertainment System title under the Arcade Classics Series of games, along with other early games in Donkey Kong Classics, Donkey Kong Jr. + Jr. Math Lesson and Donkey Kong/Donkey Kong Jr./Mario Bros., remade into a Game & Watch game, which received a remake on the Nintendo DSi, and a Mini Classic game, and was also later released on the Virtual Console for the Wii, Nintendo 3DS and Wii U. It was also available as a free download via the Nintendo 3DS Ambassador program. Donkey Kong Jr. is also a minigame in Game & Watch Galleries 3 and 4. The game was also released on the e-Reader with the only difference being a player had to scan in 5 cards to play it, afterward the player didn’t have to scan the cards again unless they scanned in a different game requiring 5 cards. The game is also one of the 30 titles included in the NES Classic Edition. It was the direct sequel to Donkey Kong, and it and the similar Donkey Kong II are the only games in the Mario franchise where Mario (previously known as Jumpman) is the antagonist.
Donkey Kong Jr. never enjoyed the sales or the following that the original Donkey Kong did, but it did well enough to warrant a second sequel, Donkey Kong 3.
After the events of Donkey Kong, Donkey Kong has been captured by Mario as revenge for kidnapping his lady friend and Donkey Kong Jr. has to save him. Donkey Kong Jr. will travel through four stages from the jungle to the big city to get his father back, climbing vines, avoiding enemies and jumping on platforms along the way. However, every time Donkey Kong Jr. gets close to freeing his father, Mario just pushes him further away.
Finally in his hideout, Mario appears to be atop a skyscraper similar to 100m from the last game. Donkey Kong Jr. has to put six keys into their keyholes to free his dad and make the platform they’re standing on disappear. Donkey Kong and Mario both fall down and Donkey Kong Jr. catches Donkey Kong but Mario just hits the ground. Donkey Kong Jr. carries his dad off-screen as Mario gets up and runs after them, only to be kicked right back out by Donkey Kong, forcing him to flee. In the NES port, this is altered to Mario falling to his apparent death for unknown reasons.