Big in Japan!
Japan is preparing for Expo '70 to be held in Osaka, so we get a crash course right from the start about the construction of various buildings and pavilions. Right then and now, we imagine just how epic the destruction of miniature sets will be. There is an attempt at addressing children, once again, but we go from alien abduction, in the two previous films, to scientific stuff, and that's bad.
We are warmed about "a demon straight out of hell" that’s nothing more, in fact, than a giant triceratops destroying random boats and several buildings. Nothing new here. Gamera sure spends a lot of time on his back, whining. We’ve been here before. There is no sense of continuity, from shot to shot, when the kaijus are fighting. Returning director Noriaki Yuasa should really work on that.
The sequels are getting extremely redundant at this point, and there seems to be no way out of this bad loop. Let’s face it, Gamera and his foes are poorly designed. The fighting is not that exciting. The Godzilla franchise did it better. The most interesting part of this film is a trip inside Gamera’s stomach. This is where the kids part comes in; too little, too late, perhaps.