Belters inhabit the main belt, trojan asteroids of the outer planets, centaur planetoids and NEA's. Larger asteroids have also been called planetoids. They are illuminated by moon-sized orbiting planetoids that emit enormous light beams. For example, in the Solar System the planets and planetoids are orbiting the Sun. The different human societies on the various planets and planetoids visited are depicted in detail. Each galaxy contains planetoids and orbiting structures for the player to explore. He plans to make a tour of several planets and planetoids. The combats take place on icy planetoids that orbit strategically important collapsars. The total amount of mass of the planetoids is unknown. Each was originally an independently sold game, neither of which was titled "Planetoids". "Planetoids" was available through Adventure International. The restricted three-body problem solution predicted the Trojan planetoids before they were first seen. "Planetoids" is a version of the 1979 arcade game, "Asteroids".