Movies like Mega Shark vs. Giant Octopus (2009)
The best movies like Mega Shark vs. Giant Octopus (2009) are Deep Blue Sea (1999), Splinter (2008) and Deep Rising (1998). If Mega Shark vs. Giant Octopus 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 ratedGodzilla (1954)7.6/10 from 1,205 votes
- NewestBeware Boiúna (2026)Released 2026
Deep Blue Sea (1999)
Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
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: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisDeep Rising (1998)
A group of heavily armed hijackers board a luxury ocean liner in the South Pacific Ocean to loot it, only to do battle with a series of large-sized, tentacled, man-eating sea creatures who have taken over the ship first.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThe Mist (2007)
After a violent storm, a dense cloud of mist envelops a small Maine town, trapping David Drayton and his five-year-old son in a local grocery store with other local residents. They soon discover that the mist conceals deadly horrors that threaten their lives, and worse, their sanity.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Worth the HypeMovies like thisAlien: Romulus (2024)
While scavenging the deep ends of a derelict space station, a group of young space colonizers come face to face with the most terrifying life form in the universe.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Worth the HypeMovies like thisScreamers (1995)
SIRIUS 6B, Year 2078. On a distant mining planet ravaged by a decade of war, scientists have created the perfect weapon: a blade-wielding, self-replicating race of killing devices known as Screamers designed for one purpose only -- to hunt down and destroy all enemy life forms.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisExtinction (2015)
And suddenly, overnight, the world came to a halt. Two men, two survivors, one kid, and hatred that separates them. A place forgotten by everyone, including the creatures that inhabit the Earth... until now.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisAVP: Alien vs. Predator (2004)
When scientists discover something near Antarctica that appears to be a buried Pyramid, they send a research team out to investigate. Little do they know that they are about to step into a hunting ground where Aliens are grown as sport for the Predator race.
Why it matches: Recommended by TMDB viewers · both science fiction & horror
Popcorn FlickMovies like thisNightmares (1983)
A collection of short stories. In one a woman who leaves her house late at night to drive to the store while a killer is loose encounters some problems. In the second an arcade whiz kid's obsession with a game leads to deadly consequences. In the third a small town priest loses his faith and decides to leave town, but in the desert is stalked by a mysterious black pick-up truck. In the final story, a family's problem with a rat is larger than they think.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisDie Alone (2024)
Lost in a world reclaimed by nature and overrun by mysterious creatures, Ethan, a young man with amnesia navigates the dangerous landscape in search of his lost love Emma. His journey takes an unexpected turn when he encounters Mae, a hardened and eccentric survivor. Together, Ethan and Mae face threats both human and otherwise before a fateful encounter with Kai unravels a secret that lies just beyond Ethan's fractured memory.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
Popcorn FlickMovies like thisThe Signal (2007)
A horror film told in three parts, from three perspectives, in which a mysterious transmission that turns people into killers invades every cell phone, radio, and television.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisDeath Machine (1995)
Chaank Armaments is experimenting with the ultimate fighting machine which is part human - part machine. So far, the Hardman project has been unreliable and has killed a number of innocent people. The genius behind this project is Jack who lives in a world of models, toys and magazines. When he is fired by Cale for killing a few corporate officers, he unleashes the ultimate killing machine called the 'Warbeast' against Cale and those who would help her.
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisContainment (2015)
Neighbors in a block wake one morning to find they have been sealed inside their apartments. Can they work together to find out why? Or will they destroy each other in their fight to escape?
Why it matches: Recommended by TMDB viewers · both horror & science fiction
SnoozefestMovies like thisBeware Boiúna (2026)
A medical mission deep in the Amazon becomes a desperate fight for survival when a colossal ancient predator awakens, turning the jungle into a deadly battleground where nature decides who lives and dies.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisDangerous Animals (2025)
A savvy and free-spirited surfer is abducted by a shark-obsessed serial killer. Held captive on his boat, she must figure out how to escape before he carries out a ritualistic feeding to the sharks below.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisDagon (2001)
A boating accident off the coast of Spain sends Paul and his girlfriend Barbara to the decrepit fishing village of Imboca. As night falls, people start to disappear and things not quite human start to appear. Paul is pursued by the entire town. Running for his life, he uncovers Imboca's secret..they worship Dagon, a monstrous god of the sea...and Dagon's unholy offspring are on the loose...
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisInto the Deep (2025)
Divers searching for sunken treasure witness the murder of drug dealers by modern-day pirates, but a killer great white is determined not to let any of them escape its waters.
Why it matches: Recommended by TMDB viewers · both horror
SnoozefestMovies like thisTremors: A Cold Day in Hell (2018)
Burt Gummer and Travis Welker find themselves in a fight for survival after investigating deadly giant worm attacks in the Canadian arctic.
Why it matches: Recommended by TMDB viewers · both science fiction
SnoozefestMovies like thisSweetheart (2019)
Jenn has washed ashore a small tropical island and it doesn’t take her long to realize she’s completely alone. She must spend her days not only surviving the elements, but must also fend off the malevolent force that comes out each night.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisOutlander (2008)
During the reign of the Vikings, a man from another world crash-lands on Earth, bringing with him an alien predator. The man must fuse his advanced technology with the weaponry of the vikings to fight the monster.
Why it matches: Recommended by TMDB viewers · both science fiction
Popcorn FlickMovies like thisGappa, the Triphibian Monster (1967)
An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisAttack of the Killer Tomatoes! (1978)
After a wave of reports of mysterious attacks involving people and pets being eaten by the traditionally docile fruit, a special government task force is set up to investigate the violent fruit and put a stop to their murderous spree.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisDaikaiju Eiga G (2007)
Student film and first feature by director Kiyotaka Taguchi. A giant monster invades Japan sending everyone into a panic. The military efforts are useless until a giant robot appears to save humanity. Blends tokusatsu practical FX with CG for an impressive debut.
Why it matches: Similar story and style · both horror & science fiction
Godzilla (1954)
Japan is thrown into a panic after several ships are sunk near Odo Island. An expedition to the island led by Dr. Kyohei Yamane soon discover something far more devastating than imagined in the form of a 50 meter tall monster whom the natives call Gojira. Now the monster begins a rampage that threatens to destroy not only Japan, but the rest of the world as well.
Why it matches: Similar story and style · both horror & science fiction
Worth the HypeMovies like thisGodzilla Raids Again (1955)
Two fishing scout pilots make a horrifying discovery when they encounter a second Godzilla alongside a new monster named Anguirus. Without the weapon that killed the original, authorities attempt to lure Godzilla away from the mainland. But Anguirus soon arrives and the two monsters make their way towards Osaka as Japan braces for tragedy.
Why it matches: Similar story and style · both science fiction & horror
Popcorn FlickMovies like thisPlan 9 from Outer Space (1957)
In California, an old man grieves the loss of his wife, and dies the day after she is buried. However, the space soldier Eros and his mate Tanna use an electric device to resurrect them both, alongside the strong Inspector Clay, who was murdered by the alien-controlled dead couple. When the populations of Hollywood and Washington D.C. see flying saucers on the sky, a colonel, a police lieutenant, a commercial pilot, his wife, and a policeman try to stop the aliens.
Why it matches: Similar story and style · both science fiction & horror
SnoozefestMovies like this5-Headed Shark Attack (2017)
A beautiful island is home to thousands of species of aquatic life. Now there is a new species: the 5-Headed Shark is all heads and teeth. Shaped like a demented starfish, this monster terrorizes the open ocean before invading the beaches of Puerto Rico, endangering the once peaceful island paradise.
Why it matches: Similar story and style · both horror & science fiction
SnoozefestMovies like thisKing Kong vs. Godzilla (1962)
The advertising director of Pacific Pharmaceuticals, frustrated with the low ratings of their sponsored TV program, seeks a more sensationalist approach. He orders his staff to Faro Island to capture King Kong for exploitation. As Godzilla re-emerges, a media frenzy generates with Pacific looking to capitalize off of the ultimate battle.
Why it matches: Similar story and style · both science fiction
Popcorn FlickMovies like thisMothra vs. Godzilla (1964)
Journalists Ichiro Sakai and Junko cover the wreckage of a typhoon when an enormous egg is found and claimed by greedy entrepreneurs. Mothra's fairies arrive and are aided by the journalists in a plea for its return. As their requests are denied, Godzilla arises near Nagoya and the people of Infant Island must decide if they are willing to answer Japan's own pleas for help.
Why it matches: Similar story and style · both science fiction
Worth the HypeMovies like thisGodzilla 2000: Millennium (1999)
An independent group of researchers called the Godzilla Prediction Network (GPN) actively track Godzilla as he makes landfall in Nemuro. Matters are further complicated when a giant meteor is discovered in the Ibaragi Prefecture. The mysterious rock begins to levitate as it's true intentions for the world and Godzilla are revealed.
Why it matches: Similar story and style · both science fiction
Popcorn FlickMovies like this
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Frequently asked questions
What are the best movies like Mega Shark vs. Giant Octopus?
The closest matches to Mega Shark vs. Giant Octopus are Deep Blue Sea (1999), Splinter (2008) and Deep Rising (1998). Below are 27 more, each with the reason it matches.
What should I watch after Mega Shark vs. Giant Octopus?
Start with Deep Blue Sea (1999), the closest match to Mega Shark vs. Giant Octopus.
What is the highest-rated movie like Mega Shark vs. Giant Octopus?
Godzilla (1954), rated 7.6/10 by 1,205 TMDB users.
What is the newest movie like Mega Shark vs. Giant Octopus?
Beware Boiúna (2026) is the most recent release on this list.
Are there English movies like Mega Shark vs. Giant Octopus?
Yes: Deep Blue Sea (1999), Splinter (2008) and Deep Rising (1998).
How are movies similar to Mega Shark vs. Giant Octopus chosen?
First come films that Trakt’s viewers watch alongside Mega Shark vs. Giant Octopus, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.