Episode list

An atomic explosion awakens Gammera--a giant, fire-breathing turtle monster--from his millions of years of hibernation. Enraged at being roused from such a sound sleep, he takes it out on Tokyo.

Teenagers from a rural community and their high school science teacher join forces to battle a giant mutant spider.

Global panic ensues when it is revealed that a mysterious UFO is actually a giant bird that flies at supersonic speed and has no regard for life or architecture.

Follows Aki, who lived with a baby monster, but they got separated. Years later, an earthquake hits Aki's house, and a giant monster appears in front of her.

A giant prehistoric praying mantis, recently freed from the Arctic ice, voraciously preys on American military at the DEW Line and works its way south.

A friendly visitor from outer space warns against conducting experiments with the Earth's magnetic field, that could mutate insects into giant monsters.