I made a post in JetPunk's subreddit recommending it for the front page: http://www.reddit.com/r/JetPunk/comments/2trgoe/how_do_i_rec_a_quiz_for_the_front_page/cqqzc9z
Fun quiz and great for learning the locations of the prefectures. Now when I hear a prefecture mentioned in the news or a drama/anime, I have an idea where it lies.
I believe the Amani Islands are part of the Kagoshima prefecture instead of the Okinawa prefecture. However, I don't know how changing the titles of the path IDs would work for this map.
1600+ how has this not gotten the star treatment?!
http://www.jetpunk.com/user-quizzes/83115/10-most-populous-prefectures-of-japan