Movies Like X: The Unknown (1956)

X: The Unknown is a 1956 horror, mystery, science fiction film from Leslie Norman with a MovieMagicScore of 6.1/10. Here are 20 similar films, ranked by real viewer ratings — starting with The Incredible Shrinking Man and Hiroshima.

Horror Mystery Science Fiction

The Incredible Shrinking Man

1957

A dangerous combination of radiation and insecticide causes the unfortunate Scott Carey to shrink, slowly but surely, until he is only a few inches tall. His home becomes a wilderness where he must survive everything from spiders living in the cellar to his beloved cat.

7.5

MagicScore

Hiroshima

2005

The documentary recounts the world's first nuclear attack and examines the alarming repercussions. Covering a three-week period from the Trinity test to the atomic bombing of Hiroshima, the program chronicles America's political gamble and the planning for the momentous event. Archival film, dramatizations, and special effects feature what occurred aboard the Enola Gay (the aircraft that dropped the bomb) and inside the exploding bomb.

7.2

MagicScore

Godzilla Minus One

2023

In postwar Japan, Godzilla brings new devastation to an already scorched landscape. With no military intervention or government help in sight, the survivors must join together in the face of despair and fight back against an unrelenting horror.

7.6

MagicScore

The H-Man

1958

When a narcotics deal goes sour and a suspect disappears, leaving only his clothes, Tokyo police question his wife and stake out the nightclub where she works.

5.7

MagicScore

The Crawling Eye

1958

A United Nations investigator crosses paths with a pair of psychic sisters on his way to Trollenberg observatory in the Swiss Alps, which has been plagued by a series of mountaineer disappearances that may be related to a radioactive cloud at the mountain's south face.

4.7

MagicScore

Zaat

1971

A mad scientist unleashes his master plan: to transform himself into a mutated walking catfish, and gain revenge on those who have spurned him. His plans go wrong, and he becomes tempted to kidnap a nubile young woman to similarly transform her so that he can breed.

2.7

MagicScore

Them!

1954

As a result of nuclear testing, gigantic, ferocious mutant ants appear in the American desert southwest, and a father-daughter team of entomologists join forces with the state police officer who first discovers their existence, an FBI agent and, eventually, the US Army to eradicate the menace, before it spreads across the continent — and the world.

6.8

MagicScore

Frankenstein Conquers the World

1965

During WWII, Germans obtain the immortal heart of Frankenstein's monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is seeming lost when the United States destroys the city with the atomic bomb. Years later a wild boy is discovered wandering the streets of the city alone, born of the immortal heart.

6.7

MagicScore

Fiend Without a Face

1958

An American airbase in Canada provokes resentment from the nearby residents after fallout from nuclear experiments at the base are blamed for a recent spate of disappearances. A captain from the airbase is assigned to investigate, and begins to suspect that an elderly British scientist who lives near the base and conducts research in the field of mind over matter knows more than he is letting on..

6.0

MagicScore

#10

It Came from Beneath the Sea

1955

A giant octopus, whose feeding habits have been affected by radiation from H-Bomb tests, rises from the Mindanao Deep to terrorize the California Coast.

5.5

MagicScore

#11

Day the World Ended

1955

After a nuclear attack, an unlikely group of survivors, including a geologist, a crook and his moll, and a prospector, find temporary shelter in the remote-valley home of a survivalist and his beautiful daughter, but soon have to deal with the spread of radioactivity - and its effects on animal life, including humans.

4.9

MagicScore

#12

The Cyclops

1957

A test pilot is missing and a search party is sent out in the jungles of Mexico; however, while searching they uncover a monster in the jungle who became this way due to a dose of radioactivity.

4.5

MagicScore

#13

Humongous

1982

The monstrous offspring of a violent crime grows up in seclusion on a remote island, where a boatful of hapless teens have shipwrecked, unaware of what's lurking in the woods.

5.0

MagicScore

#14

The Giant Behemoth

1959

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

5.8

MagicScore

#15

Godzilla vs. Destoroyah

1995

A burning Godzilla, on the verge of meltdown, emerges to lay siege to Hong Kong. At the same time horrifying new organisms are discovered in Japan. These crustacean-like beings are seemingly born of the Oxygen Destroyer, the weapon that killed the original Godzilla.

7.8

MagicScore

#16

The Beast from 20,000 Fathoms

1953

The controlled explosion of an atomic bomb in the Arctic Circle awakens a frozen dinosaur that will wreak havoc in New York City.

6.5

MagicScore

#17

The Damned

1962

An American tourist and a troubled young woman are chased by her gang leader brother to a top secret British government facility that conducts experiments on children.

6.2

MagicScore

#18

Gog

1954

A mechanical brain is programmed to sabotage the government's secret lab while working on the first space station.

5.7

MagicScore

#19

Die, Monster, Die!

1965

A young man visits his fiancé's estate to discover that her wheelchair-bound scientist father has discovered a meteorite that emits mutating radiation rays that have turned the plants in his greenhouse to giants. When his own wife falls victim to this mysterious power, the old man takes it upon himself to destroy the glowing object with disastrous results.

5.6

MagicScore

#20

Creature with the Atom Brain

1955

Murders, with victims dying from spines broken by brute strength, erupt in the city and the killers, when encountered, walk away unharmed by police bullets which strike them. A police doctor's investigation of the deaths leads to the discovery of an army of dead criminal musclemen restored to life, remotely controlled by a vengeful former crime boss and a former Nazi scientist, from the latter's laboratory hidden in the suburbs.

5.0

MagicScore

Frequently asked

What are the best movies like X: The Unknown?

The top films similar to X: The Unknown by MovieMagicScore are The Incredible Shrinking Man (7.5), Hiroshima (7.2), Godzilla Minus One (7.6). Each shares horror/mystery/science fiction themes and is ranked by real viewer ratings, not critics or studios.

Is X: The Unknown worth watching?

X: The Unknown holds a MovieMagicScore of 6.1/10 from 71 viewer ratings.

What kind of movie is X: The Unknown?

X: The Unknown (1956) is a horror, mystery, science fiction film directed by Leslie Norman, starring Dean Jagger, Leo McKern, William Lucas.

Where can I find more recommendations like X: The Unknown?

Browse the full ranked list above, or explore more horror recommendations on MovieMagicScore, where every list is ordered by genuine viewer ratings.

Keep exploring

Movies like The Incredible Shrinking Man Movies like Hiroshima Movies like Godzilla Minus One Movies like The H-Man Movies like The Crawling Eye Movies like Zaat

About movies like X: The Unknown

This ranked list pairs X: The Unknown (1956), a horror and mystery and science fiction film from Leslie Norman, with similar titles by genre, theme and cast overlap (fans of Dean Jagger take note). Unlike critic-driven sites, every position here is ordered by MovieMagicScore — a rating built only from real viewers, with no studio marketing or paid placement. Scores update as more people rate, so the list stays current.

← Back to X: The Unknown