 The original script for this film was entitled "King Ghidorahs  Great Counterattack" (Kingu Gidora no Daigyakushû), which featured  Godzilla, Rodan and Varan fighting Ghidorah, Gigan, and a new  monster named Mogu. It was then reworked into the more appealing  "Godzilla Vs. The Space Monsters: The Earth Defense Command" (Gojira  tai Uchû Kaijû: Chikyû Bôei Meirei). The script pitted Godzilla,  Angilas, and Majin Tuol (a giant stone idol, similar to Daimajin)  against King Ghidorah, Gigan, and Megalon, all three recruited by an  evil alien brain called Miko. This second script was ultimately  reworked into the film it is today. The Godzilla Tower, originally  from the script, was part of a world fair amusement park, and was  not made for an evil purpose like in the final film (in one scene,  Gigan actually mistook it for the real Godzilla!). Megalon finally  made his debut in _Gojira tai Megaro (1973)_ (qv), and Majin Tuol  was reworked into King Shisar in  _Gojira tai Mekagojira (1974)_ (qv).