Donkey Kong Jr.

Donkey Kong Jr. is an arcade video game made by Nintendo in 1982. It is the sequel to "Donkey Kong". The game was ported to many home video game consoles, including the NES, Atari 2600, Atari 7800, and ColecoVision. It was released for the Wii's Virtual Console in 2006. It was later released for the Nintendo 3DS from the Nintendo eShop service in 2012.
Gameplay.
Donkey Kong Jr. (also called Junior or DK Jr.) has to rescue his father Donkey Kong from Mario. The player has to go through four stages; each of which have a different theme. To move through the stage, DK Jr. can climb vines/chains/ropes. He can go down faster by holding only one vine, or go up faster by holding two of them. He has to avoid enemies that are in each stage. To complete the first three stages, DK Jr. has to reach the key at the top. In the fourth stage, he has to push six keys into locks near the top of the stage. After the player completes all four stages, the game goes back to the first stage and is more difficult.