20 best movies like Megalodon (2004)

In the midst of a tropical storm, the crew of an offshore oil rig must survive the rampage of a creature after invading its undersea habitat.

A small town, desperate to recover from hard economic times, is under threat when voracious Snakehead fish mutate and survive previous lake chemical poisonings. The fish transform from pests to predators when human growth hormones are dumped into the local lake in the hopes of reviving the local fishing industry. Thriving on the hormones, the Snakehead fish grow to monstrous proportions, devouring everything within reach. Capable of moving and eating on land, they are forced to leave the now barren lake in a desperate search for food - animal, vegetable or human.

The film opens with a baby dinoshark swimming away from a broken chunk of Arctic glacier that calved due to global warming. Three years later, the dinoshark is a ferocious predatory adult and kills tourists and locals offshore from Puerto Vallarta, Mexico. The protagonist, Trace, is first to notice the Dinoshark and witnesses his friend get eaten, but has trouble convincing people that a creature of such antiquity is still alive and eating people.

A group of young people stuck in the small Texas town of Fossil Ridge have to fight for their lives against dinosaurs that have been reanimated by a local scientist.

A fanatical animal rights activist releases giant pythons into the Everglades, believing the wild animals should be set free. When they start decimating the native animal population, an over-zealous park ranger feeds experimental steroids to wild alligators so they can fight back. The giant pythons and gargantuan alligators go on a killing spree, and it is now left up to the two feuding women to put aside their differences to put a stop to the creatures and the destruction.

Many years ago, hundreds of locals and tourists were massacred by giant man-eating sharks in the infamous 1916 Jersey Shore attacks. But that's just a legend... or is it? It's a holiday weekend on the Jersey Shore and, unbeknownst to anyone, underwater drills have attracted dozens of albino bull sharks to the pier. When a man goes missing, TC (The Complication), Nookie and friends fear the worst and plead with the police chief to close down the beach. It isn't until a famous singer is eaten alive during a performance on the pier that the shark hunt begins. Now, the Preppies must work together with the Guidos in order to save the Jersey Shore and its inhabitants from another vicious slaughter.

Survivors of a nuclear attack are grouped together for days in the basement of their apartment building, where fear and dwindling supplies wear away at their dynamic.

Scientists discover a giant creature under the Earth that is wrapped around the entire planet. When the creature wakes all grumpy, it causes worldwide destruction.

Doom: Annihilation follows a group of space marines as they respond to a distress call from a base on a Martian moon, only to discover it’s been overrun by demonic creatures who threaten to create Hell on Earth.

Passengers on a murder mystery train that crashes into a river must decide whether to risk waiting for help in the wreckage or take their chances in the murky depths below.

A military vessel on the search for an unidentified submersible finds themselves face to face with a giant shark, forced to use only what they have on board to defend themselves from the monstrous beast.

In the quiet waters of the Mississippi, body parts are being discovered. No one knows what is behind it all, until a huge man eating bull shark turns up. This bull shark is different, as it can breath in fresh water, making a deadly encounter between anyone who comes before it. John Sanders must now try and reach the surface, with his ex-wife and whilst being held hostage.

A giant flesh-eating reptile takes the Arctic region by storm.

30 feet of pure terror is the result of an experimental drug used in a biochemical lab and this mutated nightmare is pure evil! Half-African cobra and half-diamondback, he's 30 feet long with a giant appetite for terror.

When an oil company unwittingly unleashes a prehistoric shark from its icy prison, the Jurassic killer maroons a group of art thieves and a group of college students on an abandoned island

A team of climbers is assembled by a rich and eccentric man to rescue a missing expedition he sent up to a forbidden mountain who disappeared after sending out one last disturbing radio message.

A group of friends run a popular travel vlog that helps fund their adventures. The leader of the group brings along her younger sister for the next scuba diving trip to an isolated cove. But when their plane crashes, the two sisters must use their strength, resourcefulness and immense courage to survive a pack of great white sharks.

Months after a zombie plague has wiped out 90 percent of the American population, a small group of survivors fight their way cross-country to a rumored refuge on the island of Catalina.

After Air Force One goes down during a storm over the Bermuda Triangle, the United States Navy is dispatched to find the escape pod holding the President. A giant monster beneath the ocean awakens and attacks the fleet.

With much of America lying in ruins, the rest of the world braces for a global sharknado, Fin and his family must travel around the world to stop them.

A movie created from "found footage" of a lost military expedition that exposes the origins of life on earth.

A government funded project looks into using psychics to enter people's dreams, with some mechanical help. When a subject dies in their sleep from a heart attack, Alex Gardner becomes suspicious that another of the psychics is killing people in the dreams somehow and that is causing them to die in real life. He must find a way to stop the abuse of the power to enter dreams.

A group of skiers are terrorized during spring break by some sharks that swim through the snow. Avalanche Sharks tells the story of a bikini contest that turns into a horrifying affair when it is hit by a shark avalanche.

Open on gorgeous swamplands of the Atchafalaya Basin in the summer. Lots of beautiful teens are at the beach the weekend before Gator Fest. That night an animal smuggling deal goes wrong and a large sea creature escapes into a swampy backwoods river. At the McDaniel's "Gator Shack" restaurant, a local, Jackson is drunk, and gets mangled to bits. The town sheriff blames the carnage on the McDaniel's "escaped" pack of gators and tries hauling them off to jail. Rachel McDaniel, head of the family, claims to have seen the fin of a shark! Rachel and her family, along with the help of a mysterious stranger, Charlie, take on the Swampshark and the law to clear their names, save Rachel's kid sister Krystal and prevent the unwitting folks at the upcoming Gator Fest from being torn to shreds by a beast the likes of which no one has ever seen!

Six American grad students have arrived in Africa to study apes with a renowned professor. But after setting up camp in a jungle clearing, they soon become witness to the carnage inflicted by the strange and remote species.

Two full-length feature horror movies written by Quentin Tarantino and Robert Rodriguez put together as a two-film feature. Including fake movie trailers in between both movies.

A storm chaser tries to save Boston from destruction when a freak tornado bombards the city with huge boulders.

When zombies overrun San Francisco, a desperate group survives by locking themselves inside Alcatraz Prison. When the undead breach the island, our heros are forced to return to the mainland overrun with the undead.

Following a deadly viral outbreak, private military soldier Max Gatling leads a handful of survivors and a ragtag band of robots against an army of the infected.

When the body of a man is found completely destroyed in the swamps in Louisiana, the medical investigator Sam Rivers is assigned to investigate the murder. He travels with the biologist Mary Callahan to the location where the victim lived in a floating house and he meets his family and friends. They find that Chinese snake-heads genetically engineered that belong to a wealthy hunter are attacking and killing the locals. While the group fights to survive, the hunter Jeff arrives with his team to hunt the predators.

An offshore drilling accident triggers the release of a giant prehistoric shark. When marine biologist Kat Carmichael arrives, she runs up against corporate front man Roger Wade, who plots with Stewart to disrupt her investigation. With the help of Skipper Chuck and disc jockey Dynamite Stevens, Kat tries to find a way to defeat the monster which has evolved to a state where it can walk on dry land and fly...it's the SUPER SHARK!

The breastplate of Attila the Hun is stolen as it has clues to the location of the Sword of Mars. It is said the Sword of Mars made Attila invincible and is guarded by Cerberus.

Ángela Vidal, the young television reporter who entered the building with the firemen, manages to make it out alive. But what the soldiers don't know is that she carries the seed of the strange infection. She is to be taken to a provisional quarantine facility, a high-security installation where she will have to stay in isolation for several days. An old oil tanker, miles off shore and surrounded by water on all sides, has been especially equipped for the quarantine.

A dormant volcano deep with the Turkish forest holds within it a deadly secret. Perfectly preserved, a nest of pterodactyl eggs are ready to hatch...

A group of oddball high school students find themselves trapped in detention with their classmates having turned into a horde of Zombies.

After finding a host body in investigative reporter Eddie Brock, the alien symbiote must face a new enemy, Carnage, the alter ego of serial killer Cletus Kasady.

When a hunter sent back to the prehistoric era runs off the path he must not leave, he causes a chain reaction that alters history in disastrous ways.

The Most Dangerous Game formula gets a monstrous twist as the mythical Hydra turns the tables on a group of wealthy human-hunters. Kidnapped along with three ex-convicts, former Marine Tim Nolan is transported to a deserted island where the super rich pay a fortune to hunt human prey. But this island isn't exactly deserted; it's actually home to Hydra the Beast!

A sequel to 2004's Alien vs. Predator, the iconic creatures from two of the scariest film franchises in movie history wage their most brutal battle ever - in our own backyard. The small town of Gunnison, Colorado becomes a war zone between two of the deadliest extra-terrestrial life forms - the Alien and the Predator. When a Predator scout ship crash-lands in the hills outside the town, Alien Facehuggers and a hybrid Alien/Predator are released and begin to terrorize the town.

A scientist enlists the help of the US army to investigate the mysterious disappearance of her father, deep in the Belizean jungle. Caught in the crossfire between a brutal guerrilla army controlled by a mystical warlord, they are also confronted by an even bigger terror giant mutated wasps that are, for some reason, thirsty for blood.

On a lush tropical island, working under a secret government charter, Martin Drake has not only grown sprawling acres of giant vegetables, but inadvertently spawned two mammoth reptiles as well. Now they've broken free of their enclosures, and Drake has only one option: kill the creatures before word gets back to Washington and they close him down. When Drake's first team of well-armed mercenaries gets wiped out within hours of setting down in the jungle, he turns to one lone hunter, The Cajun, to go in single-handedly. But will The Cajun be cunning enough to find the creatures and destroy them before they turn the blue waters red with the blood of tourists. The only hope is to bring the monsters together and make them fight. When one emerges victorious, that will be the time to strike and kill the other. It's a risky plan, but ultimately the only one that may work. One of David Carradine's last movies.

Lovely and resourceful Daria and Tisa escape a space gulag only to crash land on a nearby world where a guy in tight pants named Zed is playing The Most Dangerous Game. Zed turns the girls and another guest loose in his jungle preserve to serve as the prey in a mad hunt. Armed only with knives and their wits, the girls must battle their way across the jungle to a hidden arms cache before Zed catches and kills them.

Captain Martin Stone is leading a finely-trained, elite platoon of Allied soldiers as they attack an enemy bunker. Underestimating their enemy's strength, they are quickly beaten back into the forest. As they try to regroup, they are suddenly attacked by the same soldiers they had just killed a few minutes earlier. Forced to flee deeper into Russian territory, they discover one of war's most terrifying secrets and realize they have woken up a far more deadlier enemy.

A group of shark-attack survivors is hunted by a supernatural shark that haunts their dreams.

When a young ski team training for the Olympics arrives at the remote and isolated Lost Mountain Ski Resort to focus on training, they're thrilled to find a retired Olympic skier is there to help them train. But their plans are halted when a scientist working at a nearby government lab arrives with the horrifying news that a top secret Government project has produced giant spiders and they have escaped, killing and eating everything in sight.

When plans for a weekend vacation hit a dead end, a group of close-knit friends find themselves stranded in unfamiliar territory, pursued by a menacing predator. Holed up in an isolated cabin, tensions mount as long-buried secrets are revealed. As the body count rises, the group must put their differences aside and fight for survival.

When a mad scientist mixes the genes of a killer whale and a wolf, it creates the Whalewolf, and it's up to Sharktopus to stop it.

A tropical storm floods Soggy Meadows trailer park and forces a hungry shark upriver.

Two women, aspiring documentary filmmakers, find themselves trapped in a monster-plagued Toyko in 2003.

An expedition led by adventurer Darren McCall and funded by the wealthy Harry Vargas braves the impenetrable jungle to retrieve a fabled bejeweled dagger from an ancient burial ground. But pulling the dagger from its rightful resting place awakens the long-dormant plant creature - part plant, part animal, and all bloodthirsty -- and sends it on a feeding frenzy from which there seems scant hope of survival or escape...