Best movies like Nezulla the Rat Monster

An accident occurs in an ultra-secret government biological weapons laboratory spreading a sinister bacteria.

A boy takes in a stray dog, later finding out that its an ultra-intelligent runaway from a genetic research lab. Unbeknownst to him, the dog is being stalked by another escaped creature thats not quite so friendly.

A genetically re-engineered dog develops a psychic link with a monster created in a lab experiment which goes awry.

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 virus leaks from a top-secret facility, turning all resident researchers into ravenous zombies and their lab animals into mutated hounds from hell, the government sends in an elite military task force to contain the outbreak.

In a tributary of the Amazon, a monster – half-man, half-fish – is captured and placed in a reservoir in a Florida national park to be observed by scientists.

Cancer-terminal tycoon Peter Murdoch's secret Wexel Hall Pharmaceuticals lab has developed a blood orchid extract cure. To examine why it works optimally in snakes, they also bread a super-anaconda strain. But the original pair escapes, leaving a bloody trail of human corpses. Murdoch runs, instructing his staff to clean up. They keep failing and being eaten like unsuspecting locals, some alive, even after enlisting ruthless big game hunter Hammett. The fast-growing pregnant monster sheds its skin, thus disabling the only tracking device they have.

After being driven to extinction, great bloodthirsty dinosaurs come back to life with the assistance of a demented genetic scientist. She plans to replace the human race with a super-race of dinosaurs who will not pollute the planet.

A US government germ warfare lab has had an accident. The first theory is that one of the germs has been released and killed several scientists. The big fear is that a more virulent strain, named The Satan Bug because all life can be killed off by it should it escape, may have been stolen.

Secretly engineered and blasted into space by government scientists, a vile monster crash-lands back on Earth and begins killing everyone it encounters. As the death toll rises, veteran cop McLemore bravely steps forward to crush the scary creature.

The year is 1998, six years after the nuke wars reduced the world to rubble and a few bands of wandering survivors. One of these groups stumbles into an abandoned government research facility, where they were working on making the body capable of creating its own amino acids, thus obviating the need for food. They are then attacked by one of the leftover experiments and begin experiencing an attrition problem.

When virtually all of the residents of Piedmont, New Mexico, are found dead after the return to Earth of a space satellite, the head of the US Air Force's Project Scoop declares an emergency. A group of eminent scientists led by Dr. Jeremy Stone scramble to a secure laboratory and try to first isolate the life form while determining why two people from Piedmont - an old alcoholic and a six-month-old baby - survived. The scientists methodically study the alien life form unaware that it has already mutated and presents a far greater danger in the lab, which is equipped with a nuclear self-destruct device designed to prevent the escape of dangerous biological agents.

In an alternate timeline the original Godzilla is never defeated and repeatedly reemerges to feed on Japan's energy sources. A new inter-dimensional weapon called the Dimension Tide is created with the intent of eliminating Godzilla. However, the new weapon might also serve as a gateway to something far more sinister.

JSDF pilot Akane has a fateful encounter when a new Godzilla emerges in Tateyama. As a countermeasure, a cyborg named Kiryu is constructed from the remains of the original. The machine is discovered to harbor the restless soul of the original monster as Akane must learn to find value in her own life as well.

Charlie's ex-wife disappears, and he goes to where she grew up--a rural town in the midwest--to look for her. But, surprisingly, nobody knows about her or any of her many relatives, the Newmans. He meets aliens; but when he contacts the FBI, they don't believe him. He tells his story to a tabloid; and suddenly, he is chased by the aliens.

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.

A former US Operative, who lived in Russia in his earlier years and had been married there with a child, comes out of retirement to face down a former enemy, now running as a candidate for President in modern Russia. Working with a Russian policewoman, they work to uncover a plot to use biological weapons against certain factions of the Russian people to commit genocide. The virus would also be released in other populations, but would be treated making the candidate a hero. A side plot has the agent being reunited with his long lost daughter.

A government team researching cures for plague find their results put on the Official Secrets list. One of their number is so incensed by this that he lets the maimed and jealous companion of a female colleague draw him into what, technically, could be a treasonable act.

A rogue scientist near a small desert town arouses the suspicion of the town's doctor when his lab assistant is found dead from a case of acromegaly, which took only four days to develop. As the doctor investigates, aided by the scientist's new female assistant, they discover that something is devouring local cattle and humans in increasingly large quantities.

Experiments in biological warfare have destroyed all but a few remnants of the human race. Alone in a lab, eight students work feverishly to create a vaccine before they are forced outside in search for food. It is then that the surviving scientists discover creatures mutated by the plague. Now they prepare to do battle against their worst fear: The Terror Within.

In the final days of WWI a shell-shocked soldier must lead a mission deep beneath the trenches to stop a German plot that could turn the tide of the war.

After someone is killed in the subterranean project called "Shadowzone," a NASA captain is called in to investigate. In the project, sleeping subjects are induced into a deep EDS state whereby they become portals to a parallel universe. Unfortunately this causes adverse reactions in the subject, and something gets through the portal, the consequence of which is an attrition problem.

American astronaut Frank Douglas mysteriously disappears from his spacecraft as it parachutes to Earth. He is apparently replaced by or turned into a large, radioactive, humanoid monster. A team of scientists and military men attempt to capture the monster.

A group of biology students head to the Florida Everglades for a holiday, but instead of fun in the sun, they run into trouble with a mutated, bloodthirsty, and quite deadly jellyfish-man-monster.

A biological experiment in Florida goes awry. The result: 8-foot long land crabs which roar loudly and kill everything in sight.

A farmer traps three people in a cave with his pet prehistoric monster.

In February of 1959, nine Russian hikers ventured into a remote area of the Ural Mountains. Two weeks later, all of them were found dead. What happened is a mystery that has baffled investigators and researchers for decades. It has become known as the Dyatlov Pass Incident. When five ambitious American college students are issued a grant to return to the site of the original events, they gear up with the belief that they can uncover and document the truth of what happened to the supposedly experienced hikers. But what they find is more shocking than anything they could have imagined. Retracing the steps of the Russians' ill-fated journey, the students are plagued by strange and increasingly terrifying phenomena that suggest that in spite of the desolate surroundings, they are not alone. The forces at work in the Dyatlov Pass Incident have been waiting for them.

After their plane crashes in the Pacific ocean after a storm a group of people scramble to a tropical island. At first the place seems home to palm trees and exotic wildlife but on the discovery of a disused military base they find out the island poses a severe threat to them

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.

New Mexico, present day. Brian and Lukas are off to the desert to join a kegger party and to celebrate Lukas’ victory in a motocross competition. His winning prize includes meeting The Deathinator, the biggest action star in the world. The party gets started under the hot desert sun, but Brian isn’t in the mood, so he wanders off and is soon joined by his friend, Lukas. They discover something strange in the desert which leads them into a secret military laboratory, where they discover the disturbing truth of what the government has been doing. Secret experiments on ants and spiders using DNA found in a meteorite which fell to Earth in 1951 has given birth to mutated giant ants which have overrun the facility. Now, it's up to Brian and Lukas to save the world from a giant ant invasion!

Scientists working at a government research facility use prehistoric DNA to resurrect a T-Rex who escapes from the lab to terrorize a nearby town.

When a brilliant but obsessive scientist goes to extremes to develop a universal cure for all disease, he finds himself infected with a bizarre parasite that begins to transform him into a bloodthirsty madman. Time running out, he must find a way to stop the monster that is growing within and prevent the rest of the world from being "cured."

A mafia drug lord has unleashed a new, highly addictive stimulant on the streets called HT25, derived from sharks held captive in a secret lab, and which causes monstrous side effects. After an explosion and leak at the lab, an army of mutated, bloodthirsty sharks and other creatures are set loose on the world.