Movies like Octaman (1971)
The best movies like Octaman (1971) are Underwater (2020), The Last House (2026) and Island of Terror (1966). If Octaman hooked you with its horror and science fiction, these 30 similar films are what to watch next, and every pick says why it matches.
Quick picks
- Highest ratedHulk vs. Wolverine (2009)7.1/10 from 307 votes
- NewestThe End of Oak Street (2026)Released 2026
Underwater (2020)
After an earthquake destroys their underwater station, six researchers must navigate two miles along the dangerous, unknown depths of the ocean floor to make it to safety in a race against time.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThe Last House (2026)
A family suddenly sealed inside their home must work together to survive against dwindling resources and the ominous threat keeping them trapped.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisIsland of Terror (1966)
When a small island community becomes overrun with creeping, blobbish, tentacled monsters that liquefy and digest the bones from living creatures, the community struggles to fight back.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisThe Asphyx (1972)
Hugo is a brilliant turn-of-the-century scientist, loved and respected by his family and friends, admired by his colleagues. But he is a man quickly becoming obsessed with a curious and frightening question...What is the mysterious apparition found in the photographs of his dying subjects?
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThe Blob (1988)
In Arborville, California, three high school students try to protect their hometown from a gelatinous alien life form that engulfs everything it touches.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThem! (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.
Why it matches: Recommended by TMDB viewers · both science fiction & horror
Popcorn FlickMovies like thisThe Blob (1958)
A drive-in favorite, this sci-fi classic follows teenagers Steve and his best girl, Jane, as they try to protect their hometown from a gelatinous alien life form that engulfs everything it touches. The first to discover the substance and live to tell about it, Steve and Jane witness the blob destroying an elderly man, then it growing to a terrifying size. But no one else has seen the goo, and policeman Dave refuses to believe the kids without proof.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThe Creeping Flesh (1973)
A Victorian scientist returns to London with his paleontological bag-of-bones discovery from Papua New Guinea. Unfortunately, when exposed to water, flesh returns to the bones, unleashing a malevolent entity on the scientist's family and friends.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisPhase IV (1974)
Arizona ants mock the food chain on their way to a desert lab to get two scientists and a woman.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisMass Effect: Paragon Lost (2012)
An untold chapter in the Mass Effect saga, following the early career of Alliance Marine, James Vega, as he leads a squad of elite special forces into battle against a mysterious alien threat known as The Collectors. Stationed at a colony in a remote star system, Vega and his troops must protect the inhabitants from an invasion of the deadly insectoid warriors determined to collect the population for unknown purposes. Soon after the attack, Vega's commanding officer falls in battle, forcing the young officer to embrace the responsibility of leadership for the colony's survival. Having idolized Earth's greatest hero and warrior, Commander Shepard (the central character in the Mass Effect video games), the young and idealistic Vega must now make life and the death decisions that will effect not only the lives of his squad, but the lives of every person in the colony - all of whom he has sworn to protect...
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisThe Car (1977)
The Utah community of Santa Ynez is being terrorized by a mysterious black coupe that appears out of nowhere and begins running people down. After the car kills off the town sheriff, Captain Wade Parent is determined to stop the murderous driver.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisGemini Man (2019)
Henry Brogan is an elite 51-year-old assassin who's ready to call it quits after completing his 72nd job. His plans get turned upside down when he becomes the target of a mysterious operative who can seemingly predict his every move. To his horror, Brogan soon learns that the man who's trying to kill him is a younger, faster, cloned version of himself.
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisRampage (2018)
Primatologist Davis Okoye shares an unshakable bond with George, the extraordinarily intelligent, silverback gorilla who has been in his care since birth. But a rogue genetic experiment gone awry mutates this gentle ape into a raging creature of enormous size. To make matters worse, it’s soon discovered there are other similarly altered animals. As these newly created alpha predators tear across North America, destroying everything in their path, Okoye teams with a discredited genetic engineer to secure an antidote, fighting his way through an ever-changing battlefield, not only to halt a global catastrophe but to save the fearsome creature that was once his friend.
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisSilver Bullet (1985)
The small city of Tarker's Mills is startled by a series of sadistic murders. The population fears the work of a maniac, but sightings of a mysterious, hairy creature soon spread. People lock themselves up at night, but there's one boy who's still outside…
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisThe Host (2013)
A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host and sets out to aid other free humans.
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisHulk vs. Wolverine (2009)
Department H sends in Wolverine to track down a mysterious beast known by the US Military as the Hulk, who is rampaging across the Canadian wilderness. Surveying the extent of the damage to a destroyed town, Wolverine notices a toxic scent as well as the smell of gunpowder. He is then deployed to the wilderness to resume tracking the creature.
Why it matches: Recommended by TMDB viewers · both science fiction
Worth the HypeMovies like thisThe End of Oak Street (2026)
After a mysterious cosmic event rips Oak Street from suburbia and transports their neighborhood to someplace unknown, the Platt family soon discovers that their very survival depends on them sticking together as they navigate their now unrecognizable surroundings.
Why it matches: Recommended by TMDB viewers · both science fiction
Worth the HypeMovies like thisBeneath the Planet of the Apes (1970)
The sole survivor of an interplanetary rescue mission lands on the planet of the apes, and uncovers a horrible secret beneath the surface.
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisDeadsight (2018)
A man with partial blindness and a young pregnant police officer must work together to escape a deadly virus that has spread across Grey County.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisSiren (2016)
A bachelor party becomes a savage fight for survival when the groomsmen unwittingly unleash a fabled predator upon the festivities.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisThe Mist (TBA)
After a small town in Maine is consumed by a thick mysterious fog from which creatures emerge to attack the townsfolk, a group of survivors hole up in a local grocery store.
Why it matches: Similar story and style · both science fiction & horror
Critters 4 (1992)
A super strain of genetically engineered mutants are designed to take over the universe, hungry to conquer the galaxy, with an appetite for mankind.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisSplit Second (1992)
In a flooded future London, Detective Harley Stone hunts a serial killer who murdered his partner and has haunted him ever since — but he soon discovers what he is hunting might not be human.
Why it matches: Similar story and style · both science fiction & horror
Popcorn FlickMovies like thisSplinter (2008)
When their plans for a nature trip go awry, Polly and boyfriend Seth decide to check into a motel. On their way, they're carjacked and kidnapped by low-rent crooks Dennis and Lacey, who take the victims and their SUV to a nearby gas station. Along the way, they encounter an increasingly terrifying horde of parasites, and if any of them intend to survive, they'll have to outsmart the deadly organisms.
Why it matches: Similar story and style · both horror & science fiction
Popcorn FlickMovies like thisCritters 3 (1991)
As fanged, furious furballs viciously invade an L.A. apartment building and sink their teeth into the low-rent tenants, Josh leads the battle to beat back the conniving critters and save the planet.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisTeenage Caveman (2002)
In a post-apocalyptic future mankind is lives in a prehistoric manner. After killing his father for sexually assaulting his girlfriend, the son of a tribal leader runs away with a group of his teenage friends. They are taken in by Neil and Judith who introduce them to the vices outlawed by their tribes namely sex and drugs. Neil and Judith, however, are genetically altered indestructible mutants who have their own plans for the future of the human race.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisMutants (2008)
The greedy Braylon owns the Just Rite Sugar Company and has hired the unethical scientist Sergei to conduct an experiment to make an addictive sugar stronger than heroin or nicotine to increase his sales. Sergei uses invisible people as test subjects, like beggars, addicted junkies and illegals, in the clandestine Shadow Rock Mill. When Braylon's men mistakenly kidnap Ryan, who is the brother of his secretary Erin and son of his security chief Griff, and Hannah, the youngster becomes an important non-contaminated subject. However, Erin receives some mysterious e-mails from the unknown Cinderella with a picture of Ryan and a hint that he might be in Shadow Rock and together with her father, they decide to seek out Ryan.
Why it matches: Similar story and style · both horror & science fiction
Horror High (1973)
A nerdy high school super whiz experiments with a chemical which will transform his guinea pig "Mr. Mumps" from a gentle pet into a ravenous monster. In a fit of rage against his tormentors at the high school, Vernon Potts goes on a killing spree, eliminating all of those who ever picked on him - the Gym Coach, the School Jock, The Creepy Janitor & his hated teacher, Ms. Grindstaff.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisDie, 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.
Why it matches: Similar story and style · both science fiction & horror
SnoozefestMovies like thisThe Terror Within (1989)
Experiments in biological warfare have destroyed all but a few remnants of the human race. Alone in a lab, eight students work feverishly to create a vaccine before they are forced outside in search for food. It is then that the surviving scientists discover creatures mutated by the plague. Now they prepare to do battle against their worst fear: The Terror Within.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like this
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Frequently asked questions
What are the best movies like Octaman?
The closest matches to Octaman are Underwater (2020), The Last House (2026) and Island of Terror (1966). Below are 27 more, each with the reason it matches.
What should I watch after Octaman?
Start with Underwater (2020), the closest match to Octaman.
What is the highest-rated movie like Octaman?
Hulk vs. Wolverine (2009), rated 7.1/10 by 307 TMDB users.
What is the newest movie like Octaman?
The End of Oak Street (2026) is the most recent release on this list.
Are there English movies like Octaman?
Yes: Underwater (2020), The Last House (2026) and Island of Terror (1966).
How are movies similar to Octaman chosen?
First come films that Trakt’s viewers watch alongside Octaman, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.