The Best Monster Movies and TV Shows on Plex

What it's about: Following the dumping of gallons of toxic waste in the river, a giant mutated squid-like appears and begins attacking the populace. Gang-du's daughter Hyun-seo is snatched up by the creature; with his family to assist him, he sets off to find her.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 2 others), stream on a popular subscription service (Prime Video, Hulu, fuboTV & 2 others) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Six years ago NASA discovered the possibility of alien life within our solar system. A probe was launched to collect samples, but crashed upon re-entry over Central America. Soon after, new life forms began to appear and half of Mexico was quarantined as an infected zone. Today, the American and Mexican military still struggle to contain "the creatures," while a journalist agrees to escort a shaken tourist through the infected zone in Mexico to the safety of the U.S. border.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 2 others), stream on a subscription service (Philo, Hoopla, Kanopy & 2 others) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Trapped in a remote tavern, a group of strangers must band together for survival. Outside the bar, a horde of ravenous, flesh-eating monsters are trying to break in and dine on the frightened humans inside.

Where to Watch: Available to watch free online (Plex) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: 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.

Where to Watch: Available to watch free online (Plex & Crackle), stream on a popular subscription service (HBO MAX, Philo, The Criterion Channel & 1 other) & rent or buy from $3.99 on 2 services (iTunes & Prime Video).

What it's about: In a flooded future London, Detective Harley Stone (Rutger Hauer) hunts a serial killer who murdered his partner and has haunted him ever since. He soon discovers what he is hunting might not be human.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a popular subscription service (Prime Video, Philo, fuboTV & 1 other) & rent or buy from $2.99 on 4 services (iTunes, Prime Video & 2 others).

What it's about: 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.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a subscription service (Hoopla & Kanopy) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: The monsters have made it into a small neighboring town in the middle of nowhere and the locals have to band with the survivors of the bar' slaughter to figure out how to survive.

Where to Watch: Available to watch free online (Plex) & rent or buy from $2.99 on 2 services (Google Play & Microsoft).

What it's about: The California coast is terrorized by two enormous prehistoric sea creatures as they battle each other for supremacy of the sea.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 2 others), stream on a subscription service (Hoopla) & rent or buy from $0.99 on 2 services (Prime Video & Microsoft).

What it's about: When a giant alien spider escapes from a military lab and rampages across the city of Los Angeles, it is up to one clever exterminator and his security guard sidekick to kill the creature before the entire city is destroyed.

Where to Watch: Available to watch free online (Tubi, Plex, Vudu & 2 others), stream on a subscription service (Philo & fuboTV) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: When a princess is shrunken by an evil wizard, Sinbad must undertake a quest to an island of monsters to cure her and prevent a war.

Where to Watch: Available to watch free online (Plex & Crackle), stream on a subscription service (Philo) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: After a tragic accident, six friends reunite for a caving expedition. Their adventure soon goes horribly wrong when a collapse traps them deep underground and they find themselves pursued by bloodthirsty creatures. As their friendships deteriorate, they find themselves in a desperate struggle to survive the creatures and each other.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu), stream on a popular subscription service (Prime Video & Hoopla) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Jason, a fearless sailor and explorer, returns to his home land of Thessaly after a long voyage to claim his rightful throne. He learns, however, that he must first find the magical Golden Fleece. To do so, he must embark on an epic quest fraught with fantastic monsters and terrible perils.

Where to Watch: Available to watch free online (Plex & Crackle), stream on a subscription service (Philo) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: The Swamp Thing returns to battle the evil Dr. Arcane, who has a new science lab full of creatures transformed by genetic mutation, and chooses Heather Locklear as his new object of affection.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a subscription service (Hoopla) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: A woman and her childhood friend seek out revenge on those who victimized and abused them.

Where to Watch: Available to watch free online (Plex & Vudu), stream on a subscription service (Hoopla) & rent or buy from $1.99 on 4 services (Google Play, Prime Video & 2 others).

What it's about: In the small New England town of Galen, a young teenage boy claims he has dreams of young women being brutally raped and murdered. A doctor and the local sheriff discover that the boy's dreams are real and that a sinister occult might be behind the brutal murders. They must track down the vicious killer, who may be the indestructible incarnation of a demon spawned from hell.

Where to Watch: Available to watch free online (Tubi, PlutoTV & Plex) & rent or buy from $1.99 on 3 services (iTunes, Google Play & YouTube).

What it's about: Three young children accidentally release a horde of nasty, pint-sized demons from a hole in a suburban backyard. What follows is a classic battle between good and evil as the three kids struggle to overcome a nightmarish hell that is literally taking over the Earth.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu), stream on a subscription service (Hoopla & Kanopy) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: An ex-soldier ventures into the Pacific Northwest to uncover the truth behind his fiance's disappearance.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 2 others), stream on a popular subscription service (Prime Video) & rent or buy from $1.99 on 2 services (Google Play & Prime Video).

What it's about: A Semester at Sea ship is attacked and sunk by a mutated two-headed shark, and the survivors seek refuge on a deserted atoll. The coeds, however, are no longer safe when the atoll starts flooding.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 2 others), stream on a subscription service (Hoopla) & rent or buy from $2.99 on 4 services (iTunes, Prime Video & 2 others).

What it's about: A family rents their home to unsuspecting tourists to satiate the monster that lives in its very walls.

Where to Watch: Available to watch free online (Tubi & Plex).

What it's about: The sequel to Monster Hunt. Set in a world where monsters and humans co-exist, the franchise tells the story of Wuba, a baby monster born to be king. Wuba becomes the central figure in stopping an all-out monster civil war.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: An American scientist up to no good (as usual) by creating the half-pterodactyl, half-barracuda: Pteracuda. When the creature inevitably escapes, it's up to Sharktopus to stop him.

Where to Watch: Available to watch free online (Tubi, Plex & Crackle) & stream on a subscription service (Philo & fuboTV).

What it's about: 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.

Where to Watch: Available to watch free online (Tubi, Plex & Crackle) & stream on a subscription service (Philo & fuboTV).

What it's about: A hybrid creature - half piranha and half anaconda -- attacks a low-budget horror movie crew on location near her nest when her egg is stolen. Now they must outrun and kill the deadly piranhaconda as well as stop the mad scientist who stole the egg - before they all become dinner.

Where to Watch: Available to watch free online (Tubi, Plex & Crackle), stream on a subscription service (Philo, fuboTV & Shout Factory TV), stream on a popular TV everywhere service (Syfy) & rent or buy from $2.99 on 1 service (Prime Video).

What it's about: When monsters suddenly appear from the bottom of the Atlantic Ocean, a special team pilots giant robots to combat the new threat.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 2 others) & rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

What it's about: A woman goes back to the island where her parents were killed. They had been working on a cure for cancer and accidentally raised the dead by angering a voodoo priest. With the woman is a group of mercenaries and they meet up with some other researchers. They raise the dead again and all hell breaks loose

Where to Watch: Available to watch free online (Tubi & Plex) & rent or buy from $1.99 on 2 services (Prime Video & Microsoft).

What it's about: The arrival in a small mountain town of a dissheveled stranger launches a series of murders committed by some sort of animal. As the town doctor and his daughter attempt to help the stranger, the sheriff investigates the murders; and they uncover a sinister experiment involving two rogue scientists, a car accident victim, his wife and children, and a serum that causes a man to turn into a ravaging werewolf.

Where to Watch: Available to watch free online (Plex & Crackle), stream on a subscription service (Philo & fuboTV) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: On their way home from a party in eastern Europe, sisters Abi and Lily get lost. With no signal and an unreliable GPS, they try to navigate their way out using road signs. Along a narrow road, through a deep forest, their front tire suddenly blows out. With no spare or cell service, they are completely cut off. Soon they discover that this is no ordinary forest and there is a reason no cars come up here, for the locals know of what lives deep in the woods and if they’re woken, there is nowhere to run.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu) & rent or buy from $2.99 on 4 services (iTunes, Google Play & 2 others).

What it's about: Sophie's 18th birthday becomes a bloodbath when monsters descend upon her house, devouring the guests and killing anyone who tries to leave. To survive the night, Sophie must face her destiny: monsters are real and she's the only one who can stop them.

Where to Watch: Available to watch free online (Tubi, Plex & 2 others), stream on a subscription service (Philo & fuboTV) & rent or buy from $2.99 on 4 services (iTunes, Google Play, Vudu & 2 others).

What it's about: The classic story of the mighty Eighth Wonder of the World is given a musical update, utilizing the talents of Disney musical giants The Sherman Brothers. Boosting this family-friendly take on the 1933 film are the acting talents of Jodi Benson and Dudley Moore.

Where to Watch: Available to watch free online (Tubi, Plex, Vudu & 1 other), stream on a subscription service (Hoopla) & rent or buy from $1.99 on 1 service (Prime Video).

What it's about: A crazed scientist experimenting with a rage virus on innocent victims in a laboratory in the woods. When his monstrous subjects escape and vultures devour their remains, they became mutations seeking to feed on humans.

Where to Watch: Available to watch free online (Plex & PopcornFlix), stream on a subscription service (Paramount+ & Epix), stream on a popular TV everywhere service (Epix) & rent or buy from $1.99 on 4 services (Google Play, Prime Video & 2 others).

What it's about: Giant lava breathing tarantulas – Lavalantulas – erupt out of ancient volcanos in the Santa Monica Mountains, raining death and destruction upon Los Angeles. With the City of Angels on the verge of incineration, only a washed up ‘90s action hero actor stands in the way of this monstrous swarm of bloodthirsty creatures who burn their victims alive.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 3 others), stream on a subscription service (Philo & fuboTV) & rent or buy from $2.99 on 3 services (iTunes, Google Play & Microsoft).

What it's about: Jim (John Schneider) and his research team study the Canadian Lynx every year. This year, he has to take his rebelling 16 year-old daughter, Emmy (Danielle Chuchran), with him. But the lynx are missing. As Jim and his team try to find why, something stalks them--a predator no prey can escape.

Where to Watch: Available to watch free online (Tubi & Plex), stream on a subscription service (Hoopla & ScreamBox) & rent or buy from $3.99 on 2 services (iTunes & Prime Video).

What it's about: After a Soviet space station crashes into a New York City subway tunnel, a species of venomous spiders is discovered, and soon they mutate to gigantic proportions and wreak havoc on the city.

Where to Watch: Available to watch free online (Tubi, Plex, PopcornFlix & 1 other) & stream on a subscription service (Philo & fuboTV).

What it's about: A group of friends fight for their lives against the lethal and ravenous creatures lurking beneath the Earth's surface. The group finds themselves at the mercy of creatures genetically engineered by the military to be expendable in battle. Though they fought countless battles in Iraq, these friends never knew real fear until they went underground.

Where to Watch: Available to watch free online (Plex & Vudu) & rent or buy from $2.99 on 4 services (Google Play, Prime Video & 2 others).

What it's about: Police lieutenant detective Thomas 'Thom' Randall's steady girl-friend, Dr. Jennifer 'Jen' Allen, is Dr. Aaron Michaels's main assistant on his pharmaceutical firm Bellion's research program to cure the highly contagious, fatal infection Guinin. A convicted murderer, whom Thom arrested, is one of their special drug test subjects, but escapes. The convict and Jen are affected by radioactively altered DNA from an experimental reactor used on mosquitoes which transfer quinine. The convict soon mutates into a mosquito-like monster, which sucks its victims dry. By the time Thom and his junior murder brigade partner Charlie Morrison figure out what happens, Jen starts mutating herself.

Where to Watch: Available to watch free online (Plex) & stream on a subscription service (Philo).

What it's about: An object is found that points to the secret of eternal youth so a research team is sent to find the fountain only to find it is protected by a giant snake

Where to Watch: Available to watch free online (Tubi, Plex & Crackle), stream on a subscription service (Philo & Fandor) & rent or buy from $2.99 on 1 service (Vudu).

What it's about: A group of teenagers go on a excursion to the mountains. There, they are attacked by birds infected with a lethal virus. When the teens reach a nearby village, the haunting birds start passing their virus on to all the dwellers.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu) & rent or buy from $1.99 on 1 service (Prime Video).

What it's about: A rap group on the verge of signing their first record deal is the city's only hope in a battle with a giant mutating snake monster.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu), stream on a subscription service (Hoopla) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: When the Haskin family seeks refuge from Y2K hysteria in the isolated forests of the Sierra Diablos mountains, madness and terror find them there. Abducted by a vicious hillbilly clan, the Haskins fight for survival, but neither they nor the hillbilly Crawfords can comprehend the monstrous nightmare about to erupt from the bowels of the earth.

Where to Watch: Available to watch free online (Tubi, Plex, Vudu & 1 other), stream on a subscription service (ConTV) & rent or buy from $2.99 on 1 service (Vudu).

What it's about: A group of people try to survive an attack of bloodthirsty zombies while trapped in a rural Pennsylvania farmhouse.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 3 others), stream on a popular subscription service (HBO MAX, Paramount+, fuboTV & 9 others), stream on a popular TV everywhere service (Starz, Epix & Syfy) & rent or buy from $1.99 on 6 services (iTunes, Google Play & 4 others).