Beware Boiúna

Play trailer

1:47

Beware Boiúna

R

Oct 2026

1h 44m

Horror

Mystery & Thriller

Adventure

Action

Play Trailer

Watchlist

Watchlist

Tomatometer

Popcornmeter

57%

Tomatometer

54 Reviews

68%

Popcornmeter

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.

Watch on Fandango

Stream Now

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.

Read Critics Reviews

Perri Nemiroff

Perri Nemiroff (YouTube)

2 days ago

3/5

I think [Mike Nelson] found a winning place in the spectrum of showing too much and showing not enough that worked well enough. I don't think he hit it perfectly, but I think he hit a point that made it work well for me.

Go to Full Review

Katie Rife

Inverse

6 days ago

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

Go to Full Review

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.

Go to Full Review

Joe Lipsett

Horror Queers Podcast

14 hrs ago

3/5

More indebted to the original 1997 Anaconda that it should be, Boiúna features solid performances by Madeira and Rothe. Your mileage may vary on Marshall-Green's character though, and the climax should have been the boat set piece

Go to Full Review

Chris Sawin

Video Librarian Magazine

3 days ago

2.5/5

Beware Boiúna is chock-full of jerky camera movements jittering to an obnoxiously loud sound mix. At least it isn't stingy when it comes to butchering people in countless slimy and slithery ways.

Go to Full Review

Pavinee Palakawong Na Ayuthaya

Bangkok Post

4 days 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.

Go to Full Review

Read all reviews

Anthony L

4 days ago

Great creature feature

See more

Juandi

4 days 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.

See more

Brandi

5 days ago

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

See more

Prophet R

5 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.

See more

Diana F

6 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.

See more

Juan

6 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.

See more

Read all reviews

Read More

Read Less

WRITE A REVIEW

EDIT REVIEW

POST RATING

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

1:42

Now Playing

Beware Boiúna: Movie Clip - Grab Onto Something

0:51

Now Playing

View more videos

Beware Boiúna: Vertical Movie Clip - Grab Onto Something

0:51

Now Playing

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

16:30

Now Playing

Beware Boiúna: Trailer 1

1:47

Now Playing

View more videos

View more photos

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

Join The Newsletter

Join The Newsletter

Cookie Settings