Movies Like Once You Understand It

If you liked Once You Understand It (2016), a horror movie directed by Kazuyuki Sakamoto, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Bodycam (2026)
★ 6/10Also horror
A call to a quiet suburban home unleashes unthinkable carnage when two officers mistakenly shoot a man and his infant child, spiraling the tragedy into a fierce, unrelenting fall into the unknown.
2
Tomie: Rebirth (2001)
★ 7.2/10Also horror
Young art student Hideo paints an unnerving portrait of Tomie, who whispers that she loves him. Inexplicably, he reacts by stabbing her to death with a painting trowel. Two friends, Takumi and Shunichi, arrive on the…
3
Grindhouse (2007)
★ 7/10Also horror
Grindhouse combines Robert Rodriguez's Planet Terror, a horror comedy about a group of survivors who battle zombie-like creatures, and Quentin Tarantino's Death Proof, an action thriller about a murderous stuntman who…
4
Reincarnation (2005)
★ 6.1/10Also horror
A Japanese actress begins having strange visions and experiences after landing a role in a horror film about a real-life murder spree that took place over forty years ago.
5
V/H/S (2012)
★ 6.1/10Also horror
When a group of misfits is hired by an unknown third party to burglarize a desolate house and acquire one rare VHS tape, they discover more found footage than they had bargained for.
6
Sana (2023)
★ 7/10Also horror
Takashi Shimizu's newest film is about a mysterious cassette tape containing a melody. People who hear this melody gradually begin to hum it themselves and become involved in a mysterious incident. What is the mystery…
7
Eyes of Laura Mars (1978)
★ 5.8/10Also horror
A famous fashion photographer develops a disturbing ability to see through the eyes of a serial killer.
8
Monkey’s Magic Merry Go Round (2026)
★ 7.6/10Also horror
After a mysterious bout of amnesia, a beloved children’s television host struggles to piece together his fractured memories, only to find his once-cheerful puppet co-stars behaving with sinister intent. As reality…
9
Paranormal Activity (2009)
★ 6.1/10Also horror
After a young, middle-class couple moves into what seems like a typical suburban house, they become increasingly disturbed by a presence that may or may not be demonic, but is certainly the most active in the middle of…
10
Vicious (2025)
★ 6/10Also horror
When Polly receives a mysterious box, it comes with one rule: place inside something she needs, something she hates, and something she loves. If she doesn’t obey, it will consume everything—and everyone—she’s ever known.
11
Play Dead (2025)
★ 6.3/10Also horror
A woman wakes up injured in a basement surrounded by corpses. To survive, she pretends to be dead while a grotesque ritual unfolds in the house above.
12
Rape Zombie: Lust of the Dead 5 (2014)
★ 7.4/10Also horror
Convinced of the final outcome, a team of scientists travels back in time to stop the spread of a virus turning men into zombified rapists through society and causes them to finally uncover the source of the deadly…
13
Ghostland (2018)
★ 7.4/10Also horror
A mother of two inherits a home from her aunt. On the first night in the new home she is confronted with murderous intruders and fights for her daughters’ lives. Sixteen years later the daughters reunite at the house…
14
Saint Catherine (2024)
★ 6.2/10Also horror
An orphaned girl is rescued from a satanic ritual and taken to Saint Catherine Institute for homeless youth. There she will learn new skills while facing demons that stalk her.
15
Abduction (2019)
★ 6.1/10Also horror
A man steps out of a park fountain in Ho Chi Minh City with no recollection of who he is or where he came from. As he wanders through the city, piecing together clues to his past, he is relentlessly pursued by…
16
Never Let Go (2024)
★ 6.1/10Also horror
As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.
17
Deep Water (2026)
★ 7.4/10Also horror
A group of international passengers on a flight from Los Angeles to Shanghai is forced to make an emergency landing in shark-infested waters. The terrified group is forced to work together and overcome their…
18
Mikey (1992)
★ 5.9/10Also horror
Mikey just needs a good stable home. He's bounced from foster home to foster home his whole life. He finally lands himself with a new loving family, but their perfect little child is not what he appears to be. His…
19
The Bay (2012)
★ 5.8/10Also horror
Chaos breaks out in a small Maryland town after an ecological disaster occurs.
20
Barbarian (2022)
★ 6.9/10Also horror
In town for a job interview, a young woman arrives at her Airbnb late at night only to find that it has been mistakenly double-booked and a strange man is already staying there. Against her better judgement, she…