Final Fantasy IV is a Role-Playing game, developed and published by SquareSoft, which was released in Japan in 1991.
Most of Final Fantasy IV takes place on Earth, also known as the Blue Planet, which consists of a surface world (or Overworld), inhabited by humans, and an underground world (or Underworld), inhabited by the Dwarves. An artificial moon orbits the planet, upon which the Lunarians live. The Lunarians are a race of beings originally from a world which was destroyed, becoming the asteroid belt surrounding the Blue Planet, and are identified by a moon-shape crest on their foreheads. They created the artificial moon, resting until a time when they believe their kind can co-exist with humans. A second, natural moon orbits the Blue Planet as well, although it is never visited in the game.
