Robotech is an American 85-episode adaptation of three unrelated Japanese anime television series (from three different fictional universes) made between 1982 and 1984 in Japan; the adaptation was aired in 1985. Within the combined and edited story, Robotechnology refers to the scientific advances discovered in an alien starship that crashed on a South Pacific island. With this technology, Earth developed giant robotic machines or mecha (many of which were capable of transforming into vehicles) to fight three successive extraterrestrial invasions.