Doraemon no Study Boy - Kuku Game is a Game Boy Color educational title from Japan. It is part of the Doraemon Study Boy series and focuses on teaching Japanese multiplication facts ('Kuku').  The gameplay most likely involves drills, quizzes, or mini-games centered around multiplication tables, utilizing Doraemon's characters to enhance the learning experience. The developer or publisher is not specified here.

Doraemon no Study Boy - Kuku Game (Japan)

Doraemon no Quiz Boy 2 (Japan)