Best movies like The 13th Unit

The film revolves around a special ops unit who commandeer a commercial research vessel and it’s submersible to locate a mysterious item at the bottom of the Yellow Sea. When an explosion causes the sub to overturn and take on water, the crew begins to understand that not all of them will escape and a fight for survival ensues.

Trapped in a forgotten amusement park, a young woman (Kristy) finds herself terrorized by the living memories of the park. She must break free from the park's grasp before she becomes its next victim.

A group of strangers find themselves trapped in a maze-like prison. It soon becomes clear that each of them possesses the peculiar skills necessary to escape, if they don't wind up dead first.

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.

After discovering a passenger ship missing since 1962 floating adrift on the Bering Sea, salvagers claim the vessel as their own. Once they begin towing the ghost ship towards harbor, a series of bizarre occurrences happen and the group becomes trapped inside the ship, which they soon learn is inhabited by a demonic creature.

Nine strangers wake up in a house with no recollection how they got there and no way out. The voice on the PA introduces them to a grisly game they must play. The prize is $5 million and their life.

Four teenagers at a British private school secretly uncover and explore the depths of a sealed underground hole created decades ago as a possible bomb shelter.

When passengers on a train are attacked by a creature, they must band together in order to survive until morning.

A group of people are trapped in an elevator high above Philadelphia, and one of them is the devil.

Karen, a young psychiatric nurse, boards the last subway train of the night only to have it stop in the middle of the tunnel. Suddenly, her nightmare begins: a mysterious cult has decided that it's the end of the world and the only way to save the souls of the living is to kill them in cold blood. As those around her are brutally murdered, Karen and a handful of survivors must face the homicidal cult, supernatural forces and their own fears of Armageddon in order to survive.

Ella discovers a terrifying secret when she becomes trapped in an underground storage facility. To survive she must join forces with a group of strangers, each with something to hide.

Whilst celebrating a graduation at a secluded vacation home, a group of college students find themselves targeted by a sadistic killer who forces them to play a deadly game of killing one another in order to survive.

Something nasty is lurking inside a secure storage unit. When a group of people get trapped inside, they need to find a way to get out of a building that's designed to keep things in...

A group of utility workers are trapped in a series of tunnels which, unfortunately, contain a scientist mutated by his own creation. The creature feeds instantly on a rat, becoming what it has eaten.

A bus full of strangers find themselves fighting for their lives when one of them reads from an ancient Gothic tome, bringing six dead serial killers back to life, who proceed to hunt them down one by one.

Six strangers sign up for a slasher movie re-enactment, in which they are dropped into the woods and pursued by knife wielding assassins. But when the body count becomes real, Alexandra must unravel the mystery of who is responsible if she wants to survive the ordeal.

A group of teens fights for their lives as they find themselves trapped in a fun-house, stalked by a killer clown who won't rest until every last one of them is dead.

In a sunken Castle underneath the earth, five strangers wake. They have no food. No memory. No water. And no way out. These strangers are from every normal walk of life, yet they each have a secret. They don’t know it yet, but they’re capable of something they never imagined. They must organize and band together for the sinister adventure that awaits them.

A ghost story taking place at a maximum security prison. A detective (Michael Paré ) is called to investigate a string of unexplained deaths as the prisoners fear for their lives.

Flight 7500 departs Los Angeles International Airport bound for Tokyo. As the overnight flight makes its way over the Pacific Ocean during its ten-hour course, the passengers encounter what appears to be a supernatural force in the cabin.

Eight strangers are thrown together by mysterious forces and must help each other survive in a violent world that defies explanation.

Seven strangers find themselves trapped inside an abandoned hospital after an unexplainable apocalyptic event. In addition to being haunted by what they've lost, the strangers must also fight off mysterious creatures that hunt them down one by one.

Held captive in an underground prison by a sadistic sicko who fancies himself a surgeon, 4 women fight for their lives, knowing the exact time they're scheduled to die thanks to a crudely carved set of numbers on each of their bodies. None of them can remember how they got there, but if any of them figure out the secret to their imprisonment, they stand at least some chance of surviving.

A sewage worker gets trapped inside a septic tank during a water contamination crisis and undergoes a hideous transformation. To escape, he must team up with a docile Giant and confront the murdering madman known as Lord Auch.

A computer whiz named 'Bean' is among several people found dead with strange striations, odd puncture wounds and missing internal organs. Bean's brother Ted teams up with detective Gina to get to the bottom of it. With the help of a computer hacker, they find a blueprint that reveals the killer who has been terrorizing the city...a rampaging posse of genetically mutated cockroaches!

Laura Kove is an agoraphobic young woman whose world turns upside down when she discovers that the apartment she's locked herself into is haunted. Turning to the internet for help, she enlists the aid of Elizabeth Dean, a scam artist who passes herself off as a ghost hunter. At first, Elizabeth doesn't buy Laura's story but she soon becomes a true believer.

Six strangers suddenly awaken in a remote, endless cornfield. Stripped of their possessions, they are left with only six items: a gun with a single bullet, matches, a lantern, a knife, a compass, and a flask of water. As mysterious sirens blare in the distance and traps appear at every turn, the group realizes it’s been plunged into a cat-and-mouse game with an unseen evil, and survival depends upon solving a diabolical and deadly puzzle.

In 1998, thirty four unidentified bodies were found in shallow graves in a remote Siberian forest. After subsequent investigations, no official explanation by the Russian authorities was ever offered about the circumstances of the deaths.

College students and best friends Ginger Matheson, Jim Duncan, and Kyle "Dixie" Canning, pool their cash to buy a "ghost" in an online auction. The three think it's all a goof, but once they open up the antique box to examine their "treasure," they unleash the vengeful spirit of an Irish servant girl who has been wreaking havoc on her owners throughout the generations

Royal Marine A.J Budd awakes in a mysterious house and is forced to fight for his life everyday against grotesque inhuman opponents. Trapped alone in an unchanging prison of unbreakable routines, he must kill every day or die himself. As days stretch into years, the isolation and unceasing violence threaten his very soul.

Dr. Michael Cayle thought leaving the chaotic lifestyle of New York City behind for the quiet, small town of Ashborough would bring his family closer together. Soon after arriving, however, he discovers the town's deepest secret: a terrifying and controlling race of creatures that live amongst the darkness in the woods behind his home.

In 2008, a deer hunter was taken by something in the Alabama woods. Only his rifle, blood and a 16" footprint were left behind... Five years later, his son seeks revenge.

One night, a female demon attacks Rick, a contentedly married man. Under the spell of the demon, he takes a beautiful young woman, Ariel, off to an isolated house for a weekend fling. There, bizarre and frightening things happen, and accidentally Rick kills Ariel. But she won't stay dead. He soon realizes that she is the demon that first attacked him. He defends himself by killing her again. And again. But no matter how many times he kills her, she keeps coming back

When a disgraced architect awakens from a coma, he is confronted by an agent of evil with a proposition; kill five people to reconcile his life's misdeeds and live, or decline the offer and die. As he proceeds with his grim assignment and begins collecting the fifth and final soul, he learns that his pact may have eternally horrifying consequences…

Cassidy is a senior at a NYC college and he's trying to balance the demands of school, his role as big brother to Jessica, a freshman at the same school and his role as best buddy to horn-dog Mike with his emerging feelings of attraction to men. This is further complicated by a string of co-ed murders on campus for which his sister fits the victim profile.