Donkey Kong (Japan set 1) represents one of the various original arcade releases of Donkey Kong in Japan. Different sets often refer to minor variations in the game's ROM or hardware configurations.  These differences could affect factors like the game's regional language support, minor gameplay tweaks, or even the inclusion of certain features or bugs.  The game was developed and released by Nintendo.

Donkey Kong (Japan set 1)

Donkey King Jr. (version of Donkey Kong Jr.)