Tokyo Millennium (東京ミレニアム, Tōkyō Mireniamu), also known as the Overworld by the residents of the Underworld, is the main setting which serves as the stage for the events that unfold in Shin Megami Tensei II. It was erected by the few groups of humans who managed to survive the calamity of the Great Cataclysm depicted in the first game, in the same site where the Basilica once stood. Its construction was almost entirely supervised by the members of the Order of Messiah. It is divided in numerous districts, each with its own functions and ruler.