Goukaku Boy Series - Gakken - Rekishi 512 is another entry in the Goukaku Boy educational series for Game Boy, concentrating on Japanese history. "Rekishi" means history, and "512" may represent the number of historical facts or events taught in the game.  Gameplay likely involves quizzes, learning exercises, and other activities to help players learn about Japanese history.  Gakken, a major Japanese educational publisher, was likely involved in developing or publishing this educational software.

Goukaku Boy Series - Gakken - Rekishi 512 (Japan)

Goukaku Boy Series - Eiken 2kyuu Level no Kaiwa Hyougen 333 (Japan)