Donkey Kong Jr.

Donkey Kong Jr. is a 1982 platform game developed and published by Nintendo for arcades. It is the sequel to 1981's Donkey Kong, but with the roles reversed compared to its predecessor: Mario is now the villain and Donkey Kong Jr. is trying to save his kidnapped father. After its initial release in arcades, the game was ported to a variety of home consoles, including the Famicom/Nintendo Entertainment System (for which the game was released as a launch title in Japan). The game's title is written as Donkey Kong Junior in the North American arcade version and various conversions to non-Nintendo systems.

The game was principally designed by Shigeru Miyamoto and his co-worker, Nintendo chief engineer Gunpei Yokoi. Miyamoto also created the graphics for the game along with Yoshio Sakamoto. As with its predecessor, the music for the game was composed by Yukio Kaneoka.

A sequel, Donkey Kong 3, and a spin-off game, Donkey Kong Jr. Math, were released in 1983.

Like its predecessor, Donkey Kong Jr. is a 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 vines, or climb faster by holding two. Enemies include "Snapjaws", which resemble bear traps with eyes; bird-like creatures called "Nitpickers", some of which can attack by dropping eggs; and "Sparks" which roam across the wiring in one of Mario's hideouts. DK Jr. can jump over these enemies while on platforms, switch from one vine/chain/rope to another to dodge them, or knock down pieces of fruit that will destroy every enemy they touch before falling off the bottom of the screen.

To pass the first three stages, DK Jr. must reach the key hanging next to his father's cage, whereupon Mario flees while pushing the cage off the screen. In the fourth stage, DK Jr. must push six keys into locks on the topmost platform to free Donkey Kong. After a brief cutscene, the player is taken back to the first stage at an increased difficulty. A bonus timer runs throughout each stage, and any points remaining on it are added to the player's score upon completion.

DK Jr. loses a life when he touches any enemy or projectile, falls too great a distance, falls into water or off the bottom of the screen, or lets the bonus timer reach zero. The game ends when all lives are lost.

Donkey Kong Jr. has a kill screen at level 22.

Donkey Kong has been defeated by Mario, who has put him in a cage in a forest. Donkey Kong's son, Donkey Kong Jr., follows Mario in an attempt to free his father. Mario transports Donkey Kong to his Hideout via helicopter, before Mario takes the keys to Donkey Kong's chains and places them around the building. Several enemies attack Donkey Kong Jr., but he escapes them and makes it to his father, releasing him from the chains as Mario falls to the ground. Donkey Kong Jr. saves Donkey Kong and the two set off together. Mario pursues the kongs, but flees after Donkey Kong knocks him back.