It is a single-player, two-screen game. It has a brown clamshell body. Hirokazu Tanaka composed the music.

Donkey Kong II, similar to Donkey Kong Jr.

Donkey Kong Jr. must touch a key, which takes it to the top screen. He must then climb to the top screen while dodging things like electric wires, crocodiles and birds. When he gets to the top screen, he must touch the key again, causing it to move right next to a keyhole under one of the chains. He must then climb up through the rope under the keyhole while dodging birds. When he reaches the top of the rope, one of the chains is unlocked. He must do this 4 times until he rescues Donkey Kong. Then the game starts again, at a slightly faster pace.