Monster & Alien Invasion Sci-Fi Films from the 1950s

Scientists and American Air Force officials fend off a bloodthirsty alien organism while at a remote arctic outpost.

An alien lands in Washington, D.C. and tells the people of Earth that they must live peacefully or be destroyed as a danger to other planets.

A small town in California is attacked by Martians, beginning a worldwide invasion.

A ferocious dinosaur awakened by an Arctic atomic test terrorizes the North Atlantic and, ultimately, New York City.

A strange prehistoric beast lurks in the depths of the Amazonian jungle. A group of scientists try to capture the animal and bring it back to civilization for study.

The earliest atomic tests in New Mexico cause common ants to mutate into giant man-eating monsters that threaten civilization.

After a dinosaur-like beast - awoken from undersea hibernation by atom bomb testing - ravages Tokyo, a scientist must decide if his similarly dangerous weapon should be used to destroy it.

Scout pilots for a fishing company are startled to discover a second Godzilla, whose battle with rival monster Anguirus threatens to destroy Osaka.

A giant, radioactive octopus rises from the Philippine Trench to terrorize the North American Pacific Coast.

A spider escapes from an isolated Arizona desert laboratory experimenting in gigantism and grows to tremendous size as it wreaks havoc on the local inhabitants.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

Scientists become trapped on a shrinking island with intelligent, murderous giant crabs.

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.

Enterprising journalist Audrey Ames (Peggie Castle) is determined to get the scoop on enormous grasshoppers that were accidentally created at the Illinois State experimental farm, and she endeavors to save Chicago despite a military cover-up.

Volcanic activity frees giant scorpions from the earth who wreak havoc in the rural countryside and eventually threaten Mexico City.

A scientist has a horrific accident when he tries to use his newly invented teleportation device.

An alien lifeform consumes everything in its path as it grows and grows.

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

Marine atomic tests cause changes in the ocean's ecosystem resulting in dangerous blobs of radiation and the resurrection of a dormant dinosaur that threatens London.

When a horde of prehistoric mollusk monsters enter the canal system of the California's Imperial Valley and terrorize the populace.

A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.

Men capture the Creature from the Black Lagoon and make him an aquarium attraction, from which he escapes.

A scientist captures the Creature and turns him into an air-breather, only for him to escape and start killing.

American professor John Holden arrives in London for a parapsychology conference, only to find himself investigating the mysterious actions of Devil-worshipper Julian Karswell.