This Japanese-language release of Donkey Kong Jr. features a focus on math-based learning ('Sansuu Asobi'), indicating that the gameplay likely incorporated math problems or puzzles. Like the English-language version 'Donkey Kong Jr. Math', it integrates educational elements. Nintendo likely produced and released this version for the Japanese market, creating a localized experience with a unique focus on education.

Donkey Kong Jr. no Sansuu Asobi (Japan)

Donkey Kong Jr. + Jr. Lesson (Japan)