Movies Like Tentacles
If you loved Tentacles's Horror and Science Fiction storytelling, these films deliver a similar experience — carefully selected for tone, themes, and emotional depth. Each pick includes where to watch it right now.
★ Top Picks

Underwater
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.

Afterburn
Set against the backdrop of a postapocalyptic Earth whose Eastern Hemisphere was destroyed by a massive solar flare, leaving what life remains mutated from radiation and fallout. The story revolves around a group of treasure hunters who extract such objects as the Mona Lisa, the Rosetta Stone and the Crown Jewels while facing rival hunters, mutants and pirates.

Die Alone
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.

Monster High 2
As they enter sophomore year at Monster High, Clawdeen Wolf, Draculaura and Frankie Stein face new students, new powers, and an even bigger threat that could not only tear their friendship apart but could change the world forever.

Werewolves
A year after a supermoon’s light activated a dormant gene, transforming humans into bloodthirsty werewolves and causing nearly a billion deaths, the nightmare resurfaces as the supermoon rises again. Two scientists attempt to stop the mutation but fail and must now struggle to reach one of their family homes.

Extinction
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.

Megaboa
On a trip to Colombia, a group of college students encounter a fifty-foot boa constrictor, hungry for blood.

Code 8 Part II
In a world where superpowered people are heavily policed by robots, an ex-con teams up with a drug lord he despises to protect a teen from a corrupt cop.
More Movies Like Tentacles

Containment
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?

Timescape
Before they can complete renovations on their new inn, a father and daughter are visited by a woman seeking immediate lodging for her strange group of travelers.

Slash/Back
In a remote Arctic community, a group of Inuit girls fight off an alien invasion, all while trying to make it to the coolest party in town.

Splinter
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.

Justice League
Fuelled by his restored faith in humanity and inspired by Superman's selfless act, Bruce Wayne and Diana Prince assemble a team of metahumans consisting of Barry Allen, Arthur Curry and Victor Stone to face the catastrophic threat of Steppenwolf and the Parademons who are on the hunt for three Mother Boxes on Earth.

Spring
A young man in a personal tailspin flees the US to Italy, where he sparks up a romance with a woman harboring a dark, primordial secret.

Beast
A recently widowed man and his two teenage daughters travel to a game reserve in South Africa. However, their journey of healing soon turns into a fight for survival when a bloodthirsty lion starts to stalk them.

The Asphyx
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?

Lifeforce
A race of space vampires arrives in London and infects the populace, commencing an apocalyptic descent into chaos.

Babylon 5: The Legend of the Rangers - To Live and Die in Starlight
After being punished for retreat from combat, Ranger David Martel is given command of the Liandra, a haunted 20-year old Minbari fighting ship. He's escorting ambassadors to a secret archaeological site, the oldest city on record and a clue to a dangerous ancient race.

Free Willy 2: The Adventure Home
Jesse becomes reunited with Willy three years after the whale's jump to freedom as the teenager tries to rescue the killer whale and other orcas from an oil spill.
Why These Movies Are Similar
These recommendations share core qualities with Tentacles (1977): Horror and Science Fiction themes, similar narrative structure, and comparable emotional depth. NoBadPicks uses a combination of TMDB collaborative filtering, genre matching, and AI analysis to surface films most likely to resonate with fans of Tentacles.
See full details for Tentacles (1977)
