Donkey Kong Jr. is a 1982 arcade-style platform video game by Nintendo. It first appeared in arcades, and, over the course of the 1980s, was later released for a variety of platforms, most notably the Nintendo Entertainment System. The game’s title is written out as Donkey Kong Junior in the North American arcade version and various ports to non-Nintendo systems. Its eponymous star, Donkey Kong Jr., also called simply Junior or abbreviated as DK Jr., is trying to rescue his father Donkey Kong, who has been imprisoned. Donkey Kong’s cage is guarded by Mario, in his only appearance as an antagonist in a video game. This game is the sequel to the video game Donkey Kong, which featured Mario as the hero and Junior’s father as the villain.
The game was principally designed by Shigeru Miyamoto and one of his coworkers. Miyamoto also created the graphics for the title along with Yoshio Sakamoto. As with its predecessor, the music for the game was composed by Yukio Kaneoka.
Like its predecessor, Donkey Kong, Jr. is an arcade-style platform game. There are a total of four stages, each with a unique theme. DK Jr. can run left and right, jump, and grab vines/chains/ropes to climb higher on the screen. He can slide down faster by holding only one vine, or climb faster by holding two. Enemies include “Snapjaws,” which resemble bear traps with eyes, bird-like creatures called “Nitpickers”, and “Sparks” that roam across the wiring in one of Mario’s hideouts.