Title: "Godzilla Against Gamera(US Dub title: Godzilla Against Gammera, JP: ゴジラ・ガメラ・ラドン・グリーンマン・スペクトルマン・ヒューマン:突撃!世界中の大怪獣総攻撃, Gojira, Gamera, Radon, Gurīnman, Supekutoruman, Hyūman: Totsugeki! Sekaijū no dai kaijū sō kōgeki; lit. Godzilla, Gamera, Rodan, Greenman, Spectreman, Human: Charge! Giant Monsters Around the World All-out Attack)" similarity/Inspiration: Star Tours, Monster Planet of Godzilla, Back to the Future: The Ride First Draft Title: The War in Space 2: Galactic Empire Raids Again(JP: 惑星大戦争2:銀河帝国の逆襲) Second Draft Title: Godzilla's Younger Sister(JP: ゴジラの妹) Third Draft Title: Megaloman: Monster Movie Feature(JP: 長篇怪獣映画 メガロマン) Fourth Draft Title: Go! Zone Fighter(JP: 行け!ゾーン・ファイター)(Only Seen on Good Morning! Kid's Show by Nippon TV) Fifth Draft Title: Ultraman Ace: Terrible-Monster Movie Feature(JP: 長篇超獣映画 ウルトラマンエース)(Co-Produced by Tsuburaya Productions) Sixth Draft Title: Kotaro Ushiwaka: Spirit Movie Feature(JP: 長篇妖怪映画 牛若小太郎) Seventh Draft Title: Triple Fighter: Phantom Movie Feature(JP: 長篇怪人映画 トリプルファイター)(Co-Produced by Tsuburaya Productuons) Eighth Draft Title: Ambassador Magma: Monster Movie Feature(JP: 長篇怪獣映画 マグマ大使)(Co-Produced by P Productions) Ninth Draft Title: Ultra Q: Monster Movie Feature(JP: 長篇怪獣映画 ウルトラQ)(Co-Produced by Tsuburaya Productions) Tenth Draft Title: Go! Godzilla(JP: 行け!ゴジラ)(Only Seen on Good Morning! Kid's Show by Nippon TV) Tenth Draft Title: Go! Jet Jaguar(JP: 行け!ジェットジャガー)(Only Seen on Good Morning! Kid's Show by Nippon TV) Final Draft Title: "Godzilla Against Gamera(US Dub title: Godzilla Against Gammera, JP: ゴジラ・ガメラ・ラドン・グリーンマン・スペクトルマン・ヒューマン:突撃!世界中の大怪獣総攻撃)"
Credit to Toho, Toho Eizo, P Productions, Daiei(Kadokawa), Tsuburaya Productions, Mot Boule/Tohl Narita and anyone else Do not Report/False Report