Touhou Kenbun Roku ("The Travels of Marco Polo") is an adventure game that uses the then-ubiquitous NES adventure game system of having a series of menu commands with which to interact with the world. As a text-heavy Japanese adventure game, some fluency with the language is required in order to play it.
The game depicts a troublemaker sent from the future back to 1275, when Marco Polo was in the midst of his explorations.
Description taken from http://www.giantbomb.com/touhou-kenbun-roku/3030-40378/
