Beware Boiúna

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Beware Boiúna

R

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1h 44m

Horror

Mystery & Thriller

Adventure

Action

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Popcornmeter

57%

Tomatometer

51 Reviews

68%

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50+ Verified Ratings

Deep in the Amazon, a medical mission spirals into a fight for survival when Boiúna, a colossal ancient predator, awakens to reclaim her domain. In the jungle where nature holds absolute power, she decides who lives and who dies.

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Critics Consensus

Devouring too much chaotic action and not enough genuine thrills, Beware Boiúna fails to make the most of its mythical monstrosity despite some creative narrative twists.

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Katie Rife

Inverse

3 days ago

For an unabashed B-movie like this one, achieving the modest ambition of pulling off one killer horror scene is enough.

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Barry Hertz

Globe and Mail

Oct 2, 2026

For every moment in which it feels as if Nelson is meeting the desires of his thrill-seeking audience, there are so many more that land like defanged nothingness. In the end, Beware Boiúna’s title winds up acting as its own consumer warning.

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Randy Myers

San Jose Mercury News

Oct 1, 2026

2.5/4

Boiúna perks up for two main reasons: the brio of Logan Marshall-Green as an avenging bad-boy brother and screenwriter Alan McElroy’s admirable decision to flip the switch halfway through the film.

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Pavinee Palakawong Na Ayuthaya

Bangkok Post

1 day ago

Overall, the film builds tension effectively and explores its characters’ personalities and motivations. However, some scenes feel unnecessary and could have been simplified to give the story greater focus.

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Clint Worthington

Common Sense Media

3 days ago

2/5

This monster movie commits the cardinal sin of taking itself a bit too seriously. More

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Abbie Bernstein

Assignment X

4 days ago

B

A decent giant snake movie.

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Anthony L

1 day ago

Great creature feature

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Juandi

1 day ago

This is exactly what you’d expect these kind of creature movies to be: mostly entertaining & not to be taken seriously. The ending sort of messes up the momentum but it is what it is.

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Brandi

2 days ago

I loved this movie. Some parts gave me the heebie jeebies. I'd recommend it.

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Prophet R

2 days ago

Beware Boiúna is a solid enough creature feature. The Colombian Amazon makes for a great setting, and bringing the local folklore into the story gives the giant-snake premise a little more personality. It doesn't really bring anything new to the genre, though. Lots of jump cuts, familiar scares, people getting picked off one by one, and the usual female-survivor setup. Still, it moves along well, has some fun moments, and never really overstays its welcome. Nothing groundbreaking, but a decent watch for what it is.

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Diana F

2 days ago

I really liked this movie. It was like 70’sTarantino merged with 70’s Jaws and created a snake monster movie. There’s other stories going on along the way that helps to keep it interesting too.

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Juan

3 days ago

Thought the trailer sold this really well. The snake looked good. The movie is just boring. Like at least Anaconda was bad in a fun way.

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Mike P. Nelson

Director

Logan Marshall-Green

Brennan Malloy

Kiana Madeira

Lena

Jessica Rothe

Alli

Will Close

Callum

Jackson Bews

Shawn

Beware Boiúna: Movie Clip - Do The Honors

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Beware Boiúna: Movie Clip - Grab Onto Something

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Beware Boiúna: Vertical Movie Clip - Grab Onto Something

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"Don't Play With Snakes in the Amazon!" Jessica Rothe, Kiana Madeira & Mike P. Nelson on Filming 'Beware Boiúna'

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Beware Boiúna: Trailer 1

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Synopsis

Deep in the Amazon, a medical mission spirals into a fight for survival when Boiúna, a colossal ancient predator, awakens to reclaim her domain. In the jungle where nature holds absolute power, she decides who lives and who dies.

Director: Mike P. Nelson
Producer: Robert Kulzer, Jeremy Bolt
Screenwriter: Alan B. McElroy, Tony Giglio
Distributor: Lionsgate
Production Co: Constantin Entertainment, JB Pictures, Jaguar Bite, Constantin Film, JB Pictures
Rating: R (Bloody Violent Content|Some Grisly Images|Language)
Genre: Horror, Mystery & Thriller, Adventure, Action
Original Language: English
Release Date (Theaters): Oct 2, 2026, Wide
Runtime: 1h 44m

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