Giant Monsters Converge on Okinawa! Showdown in Zanpamisaki
Giant Monsters Converge on Okinawa! Showdown in Zanpamisaki was a concept written by Shinichi Sekizawa and Jun Fukuda in the spring of 1973. That winter, a new draft would be written entitled Showdown in Zanpamisaki: Godzilla vs. Mechagodzilla by Sekizawa and Masami Fukushima. This new script would replace Garugan with Mechagodzilla, Mothra with a new monster, King Balgan, and add Gigan to the story.
Shortly after conception, these proposed films were reworked into Godzilla vs. Mechagodzilla, with King Balgan being the basis for King Caesar and Gigan being removed entirely. The Garuga Aliens would also later be reworked into the "R Aliens" by the next script, who, in-turn, were retooled to become the Black Hole Planet 3 Aliens.
A race of malevolent, ape-like aliens, dubbed the Garuga Aliens, seek to conquer the Earth and sell it to the highest bidding alien race. The aliens create a mechanical monster, Garugan, beneath Zanpamisaki and unleash it upon Japan. The combined forces of Godzilla, Mothra, and Anguirus intercept Garugan's attack, and must fight to protect the Earth.
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