Final Showa era Gamera movie, and final Showa era giant monster film. The Showa era refers to the giant monster films made between Gojira (1954) and this film. The Heisei era of giant monster films would begin with Gojira (1984) but the Gamera series would not be revived for the Heisei era until Gamera daikaijū kuchu kessen (1995) which ignored the previous films.
Made with the intention of pulling production company Daiei out of debt. The film failed at the box office, and Daiei filed for bankruptcy about six months later. The low budget of the film is evidenced by the extensive use of stock footage; all scenes of Gamera battling other monsters are taken from previous films in the series.
Gamera knocks over a billboard at one point in the film. The camera zooms into the billboard, revealing it to be an advertisement for a Godzilla film.