Beware Boiúna

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1:47

Beware Boiúna

R

Oct 2026

1h 44m

Horror

Mystery & Thriller

Adventure

Action

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Watchlist

Watchlist

Tomatometer

Popcornmeter

58%

Tomatometer

62 Reviews

68%

Popcornmeter

100+ 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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Perri Nemiroff

Perri Nemiroff (YouTube)

Oct 11, 2026

3/5

An impressive location shoot with a winning lead trio. Beware Boiúna doesn’t always click, but Kiana Madeira, Jessica Rothe & Logan Marshall-Green eat up their roles, and Mike P. Nelson is especially skilled at making the most of limited resources.

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Katie Rife

Inverse

Oct 7, 2026

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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Casey Chong

Casey's Movie Mania

3 days ago

2.5/5

A gritty but clunky, muddy horror that tries hard to be more than a straightforward creature feature.

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Brandon Wainerdi

Fangoria

4 days ago

Beware Boiúna proved that I am totally justified in my Ophidiophobia (Google says that’s "fear of snakes"), and that I can skip visiting the Amazon for a few years.

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Steven Prokopy

Third Coast Review

Oct 23, 2026

2.5/4

...part of the storytelling is fun, but the rest is fairly predictable and uninspired, as someone sabotages their boat and just generally makes their lives difficult.

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Anthony L

Oct 9, 2026

Great creature feature

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Juandi

Oct 9, 2026

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

Oct 8, 2026

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

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Prophet R

Oct 8, 2026

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

Oct 8, 2026

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

Oct 7, 2026

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
Release Date (Streaming): Nov 3, 2026
Runtime: 1h 44m

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