Best movies like Spawn of the Slithis
Last updated March 2024
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Plot Summary:
A nuclear leak creates a mutant Slithis sea monster, which terrorizes the variety of pets, winos, and hippies who hang around Venice, California.
IMDB Rating: 4.0
IMDB Votes: 1000
Genere: Horror, Sci-Fi
Country: USA
Duration: 86 min
Plot tags: surprise ending, psychotronic, independent film, cult film
Best tv shows and movies like Spawn of the Slithis (1978):
Similar in 79%
Rana: The Legend of Shadow Lake (1980)
Plot Summary:
When Kelly Morgan was 11 years old he had a terrifying encounter with Rana, a strange half man/half frog monster living in a lake. The creature killed his father and many other people before Kelly destroyed it. Now as a young man he returns to search for the monster's hidden treasure, and to see if the legendary creature really was killed.
IMDB Rating: 3.1
IMDB Votes: 603
Genere: Adventure, Horror, Sci-Fi
Country: USA
Duration: 96 min
Plot tags: grindhouse, natural horror, independent film, psychotronic
Similar in 87%
Creatures from the Abyss (1994)
Plot Summary:
Five teenagers embark on a boating trip off the coast of Florida. The teens get hopelessly lost at sea after they get caught in a fierce storm. Fortunately, the quintet stumble across an abandoned yacht in the middle of the ocean with a mysterious biology lab on board it. Unfortunately, there are also ferocious mutated prehistoric fish running amok on the yacht. Will any of the teens survive this harrowing ordeal?.
IMDB Rating: 4.3
IMDB Votes: 904
Genere: Horror, Sci-Fi
Country: Italy
Duration: 86 min
Plot tags: suspense, mysterious, surprise ending, psychotronic
Similar in 77%
Within the Rock (1996)
Plot Summary:
Space miners sent to stop a moon's collision course with the earth discover a hibernating creature that soon revives and starts slaughtering the mining crew.
IMDB Rating: 4.3
IMDB Votes: 714
Genere: Horror, Sci-Fi
Country: USA, Canada
Duration: 85 min
Plot tags: independent film, cult film
Similar in 85%
Alien from the Deep (1989)
Plot Summary:
Somewhere deep in the jungle a chemical corporation dumps tons of toxic waste in a still active volcano. Two environmentalists try to expose these illegal ways of getting rid of hugely dangerous waste, but they get caught by the vigilantes working for the company. One of them, the super-hot Maria Giulia Cavalli, manages to escape and she is saved by a snake farmer who lives alone in the jungle. Together they try to bring down the company, but it’s too late. Years of chemical poisoning have spawned a deadly monster that is set out to exact revenge on humans that have unknowingly brought him to life. Directed by legendary Antonio Margheriti, the unholy master of Italian B movies, Alien from the Deep is one of the most beloved Italian rip-offs. A wildly entertaining ride, the movie is an inventive crossover where lots of different genres and styles are mixed.
IMDB Rating: 4.1
IMDB Votes: 772
Genere: Sci-Fi, Horror
Country: Italy
Duration: 91 min
Plot tags: gothic horror, classic horror, independent film
Similar in 86%
Biohazard (1985)
Plot Summary:
Alien monster uses a psychic to try to take over the earth.
IMDB Rating: 3.6
IMDB Votes: 968
Genere: Horror, Sci-Fi
Country: USA
Duration: 84 min
Plot tags: retro, grindhouse, independent film, corny
Similar in 89%
Hellmaster (1992)
Plot Summary:
A psychotic college professor uses unwitting students as laboratory rats, injecting them with a drug that mutates them into gory killers.
IMDB Rating: 3.8
IMDB Votes: 765
Genere: Horror, Thriller
Country: USA
Duration: 96 min
Plot tags: slasher, splatter, independent film, cult film
Similar in 87%
Uninvited (1987)
Plot Summary:
A sinister corporation loses control of a house cat infected with a genetically-engineered virus. The death-toll rises during the mutant feline's rampage, and eventually, it finds its way on board a ship of a criminal king-pin.
IMDB Rating: 4.4
IMDB Votes: 3000
Genere: Horror, Sci-Fi
Country: USA
Duration: 91 min
Plot tags: retro, slasher, classic horror, natural horror, surprise ending, independent film, psychotronic
Similar in 87%
Aquanoids (2003)
Plot Summary:
On a small island off the California coast it's the Fourth of July and tourists are washing up dead in Babylon Bay, once again! In 1987, rumor has it that mysterious sea creatures called Aquanoids were responsible for 17 vicious deaths. The Mayor dispelled the sightings as urban legend to protect the local tourist trade. Join environmental activist Vanessa DuMont as her fight to save the endangered abalone on Santa Clara Island turns into a fight of her life.
IMDB Rating: 2.4
IMDB Votes: 614
Genere: Horror
Country: USA
Duration: 90 min
Plot tags: suspense, psychotronic, independent film
Similar in 75%
Creature of Destruction (1968)
Plot Summary:
A resort hypnotist and his assistant predict murders, which she then commits as a fanged monster.
IMDB Rating: 3.2
IMDB Votes: 382
Genere: Horror, Sci-Fi
Country: USA
Duration: 80 min
Plot tags: psychotronic, independent film
Similar in 78%
Scared To Death (1980)
Plot Summary:
A series of hideous murders is taking place, and Inspector Capell and cop-turned-novelist Lonergan are investigating. The murders are found to be the work of an out-of-control experiment in genetic engineering. The two men must descend into the city's sewer systems to destroy the horrific miscreation. It won't be hard to find, as it's already looking for its next victims.
IMDB Rating: 4.2
IMDB Votes: 1000
Genere: Horror, Sci-Fi
Country: USA
Duration: 96 min
Plot tags: slasher, bloody, splatter, psychotronic, independent film
Similar in 81%
Terror in the Swamp (1985)
Plot Summary:
In effort to create the perfect nutria for breeding by the fur industry, a scientist and his assistant inadvertently create a brutal mutation that escapes into the nearby swamps.
IMDB Rating: 3.6
IMDB Votes: 207
Genere: Horror, Sci-Fi
Country: USA
Duration: 87 min
Plot tags: slasher
Similar in 79%
The Intruder Within (1981)
Plot Summary:
Drillers on an oil rig near Antarctica discover that they accidentaly brought up several prehistoric eggs. One egg hatches and becomes an unstoppable creature. Chad Everett and Jennifer Warren risk their lives to stop it.
IMDB Rating: 4.7
IMDB Votes: 511
Genere: Horror, Sci-Fi
Country: USA
Duration: 91 min
Plot tags: psychotronic, gothic horror, cult classic, classic horror
Similar in 87%
Evil Spawn (1987)
Plot Summary:
Microbes are brought back to earth via a space probe from Venus. A scientist is using them in experiments on aging, but dies before the work is finished. His assistant approaches an aging actress who is being passed by for the lead roles, and she injects the serum hoping to become young again. When the actress is still passed up for the plum roles, the alien bacterium transforms her into a hideous bug-like alien resulting in a predictable attrition problem amongst her detractors.
IMDB Rating: 3.9
IMDB Votes: 762
Genere: Horror, Sci-Fi
Country: USA
Duration: 100 min
Plot tags: independent film
Similar in 75%
Weasels Rip My Flesh (1979)
Plot Summary:
Returning from the planet Venus, an errant NASA spacecraft crashes into the ocean, spilling its radioactive cargo. Enveloped by a radioactive mass, a rabid weasel is transformed into a gigantic killer mutant. Prowling the countryside, the huge weasel kills and devours victims. The creature is captured by a disturbed scientist who plans to use its regenerative blood to amass an army of similar monsters, enabling him to conquer the Earth.
IMDB Rating: 3.1
IMDB Votes: 490
Genere: Horror, Sci-Fi
Country: USA
Duration: 67 min
Plot tags: psychotronic, independent film, detective, natural horror, weird, cult film
Similar in 87%
Ticks (1993)
Plot Summary:
Teens camping in a northern California retreat are terrorized by mutant insects created by evil, polluting pot farmers.
IMDB Rating: 5.5
IMDB Votes: 6000
Genere: Horror, Sci-Fi
Country: USA
Duration: 85 min
Plot tags: scary, tense, rough, semi serious, natural horror, retro, dark, independent film, psychotronic, weird
Similar in 76%
The Creeping Terror (1964)
Plot Summary:
A newlywed sheriff tries to stop a shambling monster that has emerged from a spaceship to eat people.
IMDB Rating: 1.9
IMDB Votes: 5000
Genere: Horror, Sci-Fi
Country: USA
Duration: 77 min
Plot tags: cult classic, retro, suspense, detective, grindhouse, independent film, scary, offbeat, suspenseful, semi serious
Similar in 90%
Xtro 3: Watch the Skies (1995)
Plot Summary:
Marines on a deserted island are ordered to disfuse bombs, but then an alien creature terrorizes them.
IMDB Rating: 3.6
IMDB Votes: 1000
Genere: Horror, Sci-Fi
Country: USA, UK
Duration: 97 min
Plot tags: classic horror, independent film
Similar in 85%
Blood Predator (2007)
Plot Summary:
A private jet crashes in the Sierra Mountains leaving seven survivors stranded in a torrential snow storm. With no rescue team in sight, the group decides to search for the plane in hopes of fixing the radio to call for help. But what they find instead is an alien creature that multiplies itself rapidly. The extraterrestrial beasts have a barbed-like tongue and are able to pull their victims into their razor sharp teeth to shred human flesh like a haywire garbage disposal. But the survivors won t go down without a fight!.
IMDB Rating: 2.3
IMDB Votes: 200
Genere: Horror, Sci-Fi
Country: USA
Duration: 91 min
Plot tags: suspense
Similar in 89%
The Being (1981)
Plot Summary:
Toxic waste dumping in a small Idaho town turns a young boy into horrible mutant monster. The town's police chief and a government scientist team up to stop the monster, which is quickly killing off the town's citizenry.
IMDB Rating: 4.4
IMDB Votes: 2000
Genere: Horror, Sci-Fi
Country: USA
Duration: 82 min
Plot tags: slasher, retro, cult classic, cult horror, psychotronic, independent film, spooky, cult film
Similar in 83%
The Navy vs. the Night Monsters (1966)
Plot Summary:
US Navy battles monsters unearthed from the frozen arctic.
IMDB Rating: 3.6
IMDB Votes: 780
Genere: Horror, Sci-Fi
Country: USA
Duration: 87 min
Plot tags: retro, suspense, natural horror, psychotronic, independent film, lovecraft, campy
Similar in 90%
Island Claws (1980)
Plot Summary:
A biological experiment in Florida goes awry. The result: 8-foot long land crabs which roar loudly and kill everything in sight.
IMDB Rating: 4.3
IMDB Votes: 553
Genere: Horror, Sci-Fi
Country: USA
Duration: 90 min
Plot tags: psychotronic, independent film
Similar in 81%
Biohazard: The Alien Force (1994)
Plot Summary:
Triton Indutries has created a genetically-engineered creature using DNA from human sources. During the course of the experiment, however, the host mother carrying the mutant escapes from the laboratory compound, giving birth shortly thereafter. The intellient "baby" beings hunting down and killing its male DNA donors, while at the same time trying to mate with its female donors. The head of the lab wants to destroy the monster before the press can get wind of the story, but the former head of security wants to expose the whole thing.
IMDB Rating: 3.3
IMDB Votes: 208
Genere: Horror, Sci-Fi
Country: USA
Duration: 88 min
Plot tags: independent film
Similar in 79%
Unseen Evil 2 (2004)
Plot Summary:
After a series of brutal, unexplained murders in a remote forest, a rogue military unit is recruited to hunt for whoever - or whatever - has rendered the attacks. In order to carry out the investigation, they need the help of the only survivor, Kate. But first they have to get her released from the mental institution she's been confined to since the horrific attack. Written.
IMDB Rating: 2.6
IMDB Votes: 707
Genere: Horror, Sci-Fi
Country: USA
Duration: 81 min
Plot tags:
Similar in 85%
Dark Universe (1993)
Plot Summary:
On its way back to Earth, the space shuttle Nautilus passes through a cloud of alien spores causing its sole occupant, astronaut Steve Thomas to transform into a blood-thirsty monster. The shuttle crashes into a swampy region of central Florida, creating a situation which threatens contagion and/or death to all who encounter the shuttle or its mutated pilot.
IMDB Rating: 3.1
IMDB Votes: 415
Genere: Horror, Sci-Fi
Country: USA
Duration: 83 min
Plot tags: independent film, space horror, scary, exciting, offbeat, suspenseful, semi serious, cult film
Similar in 82%
The Giant Spider Invasion (1975)
Plot Summary:
A black hole hits North Wisconsin and opens a door to other dimensions. Giant 15 meter spiders emerge from it, who have an appetite for human flesh! Dr. Jenny Langer and Dr. Vance from the NASA try to save the world.
IMDB Rating: 3.2
IMDB Votes: 5000
Genere: Horror, Sci-Fi
Country: USA
Duration: 84 min
Plot tags: scary, suspenseful, semi serious, natural horror, captivating, retro, cult classic, offbeat, psychotronic, independent film
Similar in 82%
Monster (1980)
Plot Summary:
A rural Colombian village is attacked by a horrible sea serpent, aroused by industrial pollution of a nearby lake. Based on a real event that took place in June of 1971.
IMDB Rating: 2.6
IMDB Votes: 840
Genere: Horror, Sci-Fi
Country: USA
Duration: 78 min
Plot tags: retro, natural horror, independent film, scary, rough, serious, psychotronic, campy, cult film
Similar in 79%
Octaman (1971)
Plot Summary:
A scientific team in Mexico discover a pool of unusual baby "octopus-like" specimens. Gathering a few for analysis back at the lab, it is soon discovered that the critters belong to a gangly six-foot half man/half octopus-like creature, that's pretty angry and wants her 'babies' returned….
IMDB Rating: 3.3
IMDB Votes: 1000
Genere: Sci-Fi, Horror
Country: Mexico, USA
Duration: 79 min
Plot tags: natural horror, retro, grindhouse, scary, offbeat, bleak, suspenseful, semi serious, psychotronic, independent film
Similar in 85%
Hydra (1971)
Plot Summary:
A mad scientist (and apparent former Nazi) unleashes his master plan: to transform himself into a mutated walking catfish, gain revenge on those who have spurned him, and kidnap nubile young women to similarly transform so that he can breed. Or something like that.
IMDB Rating: 2.2
IMDB Votes: 5000
Genere: Horror, Sci-Fi
Country: USA
Duration: 100 min
Plot tags: natural horror, psychotronic, grindhouse, medical horror, cult classic, independent film, scary, offbeat, serious, surprise ending
Similar in 85%
Rejuvenator (1988)
Plot Summary:
A rich actress who has gotten too old for leading roles employs a scientist who is working on a formula for eternal youth. The formula involves withdrawing certain fluids from the human brain. She takes the serum, but its unforeseen side effects turn her into a murderous monster.
IMDB Rating: 5.3
IMDB Votes: 673
Genere: Horror, Sci-Fi
Country: USA
Duration: 90 min
Plot tags: cult classic, psychotronic, independent film
Similar in 89%
Humanoids from the Deep (1980)
Plot Summary:
They're not human. But they hunt human women. Not for killing. For mating.
IMDB Rating: 5.7
IMDB Votes: 10000
Genere: Horror, Sci-Fi
Country: USA
Duration: 80 min
Plot tags: scary, grindhouse, intense, suspenseful, slasher, cult classic, splatter, lovecraft, independent film, absurd