Best movies like They Crawl

A set of vipers has been taken by scientists to mutate them to make a cure for cancer. As their experiment goes awry, the vipers escape into the woods - they're not only biting people, they're actually killing people, in a little town.

Richard Greico leads a team of electrical workers who stumble across a terrifying parallel universe. While investigating a strange power source in an abandoned building, the workers find themselves sucked into an underworld teeming with massive, man-eating, spider-like monsters. The bloodthirsty arachnid-human hybrids stalk and kill their victims one by one, leaving the dwindling group of survivors to fight back with just their wits and a handful of primitive weapons.

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.

When a series of unexplained vicious animal attacks strikes his community, Sheriff Jim Tanner and his assistant Barbara trace them back to a Dr. Hyde, a former military researcher whose government funding for a dinosaur cloning project was cut. When the Pentagon discovers Hyde obtained foreign backing to continue his experiments, they send in a strike team to save Tanner and Barbara and stop Hyde.

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.

After an experiment to make the ultimate weapon goes wrong, a team of commandos is sent into a genetic research lab and end up getting stalked by a creature that looks a lot like the Predator

Genetically mutated bats escape and it's up to a bat expert and the local sheriff to stop them.

A group of Delta Force soldiers, accompanied by a CIA agent, are sent to the Belzan forest in Chechnya in search of a rogue American weapons researcher, Dr. Benton Walsh. As they search for Walsh's camp, they are attacked by genetically-altered carnivorous bats. The survivors attempt to reach helicopter extraction but encounter various challenges, including Chechen rebels.

A cop on the track of a criminal finds himself in the midst of an unfinished subway tunnel, when his flashlight reveals a startling discovery: a three meter long scorpion-like Bug. With one slice of its massive tail the bug fells the man and devours him. FBI agent Matt Pollack is brought in to investigate, and when forensics reveal the source of the problem, he turns to his friend and entomologist Emily Foster for help.

When two brothers, Josh and Mike, go to a small southern town for a vacation, they find most of the residents either dead or missing. When Mike himself goes missing, Josh teams up with the local sheriff and an attractive school teacher to find him until Josh discovers that the whole town and most of it's people have been infected by a form of toxic waste, and they have all turned into toxic vampires whom prowl the streets at night for human blood!

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 NASA try to save the world.

After Los Angeles is invaded by an army of subterranean monsters, a small group of people must fight for survival in the deserted metropolis.

A news team is sent to Burundi to capture and bring home a legendary 25-foot crocodile. Their difficult task turns potentially deadly when a warlord targets them for death.

A shy comic book fan is injected with an experimental serum and starts turning into a spider. When web covered bodies start appearing a policeman starts to investigate the strange case.

It's an experiment in human behavior. It's an exploration of the most natural of animal impulses. It's something new under the moon. And it bites. When security dispatcher Aaron Scates is blinded in an explosion, he's put in the care of Dr. Andrea Hewlitt, famous in her field for spearheading extraordinary-though controversial-medical breakthroughs. Her newest is cross-species organ transplants, and Aaron is her first human subject. When a severely wounded wolf is brought to Dr. Hewlitt's office by museum curator Lydia Armstrong, Dr. Hewlitt leaps on the opportunity and successfully transplants the wolf's eyes to Aaron-despite Lydia's objections. Aaron, however, is thrilled. Not only can he see again, he can see in the dark. He also has an unusually acute sense of hearing, and tears into a raw steak like never before. Unfortunately, he also tends growl, and to target people as prey.

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.

In Host, Missouri, the newcomer Dr. of Veterinary Science Eli Rudkus is called by the farmer Jacob Long to exam one of his cows. The veterinarian finds a strange parasite in the animal and sends it to a friend in the Department of Agriculture for research. Later, he finds the same parasite in a creek and he summons the population for a meeting, warning that the cause might be the animal food. However, Fletcher Odermatt, the wealthy owner of the local Host Tender Meals that has been providing free animal food for the farmers, brings his lawyer Hayley Anderson and discredits Eli. When a huge mutant parasite attacks Eli and Jacob, they discover that the meals are actually an experimental genetic cocktail that is growing parasites inside the cattle and people. Written by Claudio Carvalho, Rio de Janeiro, Brazil

A dog turns from man's best friend into man's worst nightmare as he attacks everything that moves.

When a cockroach-spread plague threatened to decimate the child population of New York City in the original Mimic, biologist Susan Tyler and her research associates developed a species of "Judas" bugs and introduced them into the environment, where they were to "mimic" the diseased roaches and infiltrate their grubby habitats. The plan worked until the bugs evolved to mimic their next prey... humans! Just when they were all thought to be dead, the giant cockroaches are back, and this time they've mutated to take on human form!

After the mayor uses a potentially dangerous substance to protect the local plantation, the lakeside town of Mountview, in California, is attacked by a lethal species of large cockroach. After some of the town's inhabitants are killed, the mayor enlists the help of eccentric pest exterminator General George S. Merlin in order to prevent further harm to the local dwellers.

Stranded on a deserted island, a group of people struggle to survive against a swarm of supernatural flies.

As the result of a corrupt businessman's illegal toxic waste dumping, a small desert town is beset by a deadly swarm of huge bloodthirsty mutant mosquitoes!

After freezing up under pressure in the emergency room, Dr. Cahill decides to spend a few months unwinding on a little Maine island where he immediately gets off on the wrong foot with the locals. Meanwhile, a body has washed up on shore infested with a strange type of carnivorous cockroach. But when Dr. Cahill tries to warn the townsfolk of the danger, they are naturally skeptical. Will they realize the truth before it's too late?

After an African dinosaur ancestor of the crocodile is found, Dr. Campbell uses its DNA to create prototypes at Paula Kennedy's Gereco lab.

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.

A space shuttle crashes containing a lethal prototype organism designed to survive in any environment. The only people who can stop the creature are the Secretary of Defense agent and the female scientist who created it.

A group of scientists try to stop a swarm of flesh-eating locusts that escape from a top secret government lab in the USA Midwest.

A widow, Deputy Sheriff Jane Kozik, moves from Manhattan to Black Stone, New York, with her daughter Kelsey. There she expects to find a safe place to live. The day after moving, a homeless man is found dead in the tool shed of Jane's blind friend Beverly; an entomologist, Katherine is summoned to help with the investigation, along with Devin, Jane's brother-in-law and former boyfriend. Meanwhile, Kelsey befriends Eli, a scientist who has developed genetically modified wasps to the army as a weapon, and who is now trying to revert the process. When the wasps attack Black Stone, Jane, Devin and Eli team-up to attempt to destroy the swarm.

In 1979, a delivery truck makes its way up a lonely southern California highway in a storm, bound for the San Diego Zoo with a deadly tropical rattlesnake as cargo. When the truck suffers a blowout, the driver loses control and hits a tree, shattering the snake's aquarium in the back and the window separating the snake from the driver. The snake slithers into the front of the truck, kills the driver with its bite and then moves off into the forest. Flash forward to 1999. The small southern California town of San Vicente has grown from 6,000 to 30,000, and the rattler, which escaped nearby years ago, has bred. There are now 25,000 of these hybrid rattlesnakes, and they are slowly making their way downhill into the town, attracted by the movement of the blasting as the town paves its way toward progress. Progress, in this case, brings terror, in this tale originally penned by John Carpenter.

When a team of backpackers sets out to explore the Indian jungles, one of them is bitten by a poisonous spider and killed.

In the peaceful town of Snowfield, Colorado something evil has wiped out the community. And now, its up to a group of people to stop it, or at least get out of Snowfield alive.

Horror tale of insects which eat their victims from the inside out.

A sheriff tries to save unsuspecting townspeople, including his estranged wife and young daughter, from a deadly swarm.

Scottsville is a sleepy town, where the yearly apple blossom festival is usually the only 'memorable' event, so Police Chief Sam Taylor is furious when young cop Ally Parks -who comes from the big city- insists on investigating the death and mutilation of prof. Fuller, who experimented on bats, and soon several other victims, as unnatural bat attacks. She finds a helpful 'expert' in animal controller Dr. John Winslow, and the couple gets help from his inquisitive daughter Genny and her practically in-living high school-friend Logan to unravel how it all ties in with local real estate mogul Carl Hart's dishonest and corrupt practices.

After miners disappear in the Namib Desert, some scientists find their remains and the demonic creature that killed them.