Designed by Gakken for the Nintendo Game Boy as part of the Goukaku Boy series, this game helps students prepare for high school entrance exams by focusing on Japanese history timelines. Gameplay probably revolves around quizzes, memorization exercises, and interactive elements focused on learning and retaining significant dates and events from Japanese history. The "240" in the title suggests the number of historical points covered. It adopts the interactive learning methods typical of other games in the series.

Goukaku Boy Series - Koukou Nyuushi Derujun - Rekishi Nendai Anki Point 240 (Japan)

Goukaku Boy Series - Koukou Nyuushi Derujun - Chuugaku Eijukugo 350 (Japan)