A game-style educational app for memorizing "historical phrases" for junior high school students.

●Questions
・Answer the era of the question word with 4 choices
・Related phrases appear when the enemy explodes
・Answers are expressed using colors and sound effects depending on the era ⇒ Memories can be achieved through color vision and hearing
・There is a summary of questions at the end
⇒We are looking for summarizing phrases in the comments.

●Memory
・Summary of each era
・Classified by year, people, culture, battle, and politics


●Achievement level
・Display the progress of each era in a graph.

※Note
In junior high school textbooks, the scope of world history is not labeled in accordance with Japan's period divisions (particularly Jomon and Yayoi), but in this app, we have forced them to do so in order to match world events with a sense of the times.