A moon base is destroyed by a spaceship from Zigra which is looking to take over the planet earth to use its oceans for its ocean-dwelling denizens. Gamera must once again come to the aid of the human race while … Eiko Yanami, Reiko Kasahara, Mikiko Tsubouchi, Kōji Fujiyama, Isamu Saeki, Shin Minatsu, Arlene Zoellner Added on Amazon Prime 2021-11-15. Youtube Trailer

As alien invaders plot to conquer the Earth, two Boy Scouts steal a mini-submarine and discover Gamera in their midst. Transported to the alien's spaceship, the Scouts are menaced by the evil inhabitants, including Viras, a squid-like monster that grows … Kōjirō Hongō, Tôru Takatsuka, Carl Craig, Michiko Yaegaki, Peter Williams, Kōji Fujiyama, Mari Atsumi Added on Amazon Prime 2023-02-05.