Notable islands of Japan. A tip for those looking to learn these, is that a majority of the answers end in either "hama", "jima", or "shima", so you can focus your memory on the stuff before those suffixes. There is no particular order to the island list, the point of the quiz is to learn island names by dragging the mouse over them in the results screen :)
I like that every time you try to type something, you get free islands because of the many that are just either the first letter or word of a different island.