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3 underrated sci-fi movies on Amazon Freevee you should watch in October

Amazon Freevee is a service you can watch even without an Amazon Prime subscription. It’s totally free but with ads between movies and TV show episodes. That’s a small price to pay for being able to watch so much great content.

Sci-fi is the type of genre that often touches on other genres, like drama, comedy, action, and psychological horror. You can check out the best sci-fi movies on Amazon Prime Video. But the selection of content on Amazon Freevee,  including sci-fi movies, is worth exploring, too. If sci-fi is what you’re in the mood for right now, we have put together this list of 3 underrated sci-fi movies on Amazon Freevee you should watch in October. You might never even have heard of these films before, but you’ll find them intriguing, entertaining, and thought-provoking.

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Triangle

Triangle - Trailer

In this British-Australian sci-fi film, which gears towards the psychological horror side, Melissa George stars as a woman preparing to take her autistic son with her on a boat trip with a friend named Greg (Michael Dorman). But as they set sea, a troubling call comes in from a woman who claims to be witnessing someone killing people. The boat capsizes and the survivors end up on an ocean liner.

Strange things begin to happen, including visions of a mysterious silhouette. Triangle, which also stars Liam Hemsworth, has been lauded for being intelligent and well-acted. But it never received a theatrical release in the U.S., making it a movie that has likely never been on your radar, until now.

Stream Triangle on Amazon Freevee.

Killer Klowns From Outer Space

Killer Klowns from Outer Space Official Trailer #1 - John Vernon Movie (1988) HD

Sci-fi horror movies from the ‘80s didn’t rely on complex special effects: the films were much simpler yet could still make your skin crawl. Killer Klowns From Outer Space skews to the comedic side, the story of evil aliens who happen to look like clowns. When they invade a small town with the intent of harvesting humans and drinking their blood, insanity and hilarity ensue.

The movie is the only ever from the Chiodo Brothers who predominantly work behind the scenes in special effects, stop-motion, and Claymation. Killer Klowns From Outer Space is campy and fun. It has since become a cult classic but remains a goofy movie not everyone is aware even exists.

Stream Killer Klowns From Outer Space on Amazon Freevee.

Black Box

Black Box – Official Trailer

A Prime Video original, Black Box stars Mamoudou Athie as Nolan, a man suffering from amnesia after a devastating car crash. Now a single father since his wife died in the crash, Nolan decides to undergo an experimental procedure called “black box,” desperate to make his memories return.

But the procedure results in Nolan seeing a monster every time he tries to access a memory and a battle between a man and a strange figure taking over his consciousness. Having received decent reviews, Black Box is mind-boggling and thought-provoking. Phylicia Rashad also stars as Dr. Lilian Brooks, the woman administering the controversial treatment.

Stream Black Box on Amazon Freevee.

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Christine Persaud
Christine has decades of experience in trade and consumer journalism. While she started her career writing exclusively about…
3 underrated movies on Amazon Prime Video you need to watch in March 2025
Several workers with bags standing in a remote location looking scared in Severance.

What makes a movie underrated? It might be that critics have panned the film even though it has earned massive box office success and positive reception from audiences. Perhaps it’s the other way around, and critics love it, but audiences fail to see what’s so special. Some underrated movies are fantastic but simply didn’t get the attention they deserved and have slipped into the deep depths of streaming services, only to be unearthed by those who dare to find them.
The three underrated movies on Amazon Prime Video you need to watch in March 2025 fall into varying categories that qualify the movies as underrated. One broke records, yet critics refuse to give it two thumbs up. Another shares its name with one of the hottest shows streaming right now.
Need more recommendations? Then check out the best new movies to stream this week, the best movies on Netflix, the best movies on Hulu, the best movies on Amazon Prime Video, the best movies on Max, and the best movies on Disney+.
The Super Mario Bros. Movie (2023)
The Super Mario Bros. Movie | Official Trailer

Even before it premiered, The Super Mario Bros. Movie was getting a lot of flak for the choice of Chris Pratt as the voice of the titular character. Following the debut of this adventure comedy film in theaters, critics still weren’t convinced that it was a hit. But The Super Mario Bros. Movie delighted fans and proved naysayers wrong.
The film explored an interesting dynamic whereby Bowser (Jack Black) was a softie with a deep love for Princess Peach (Anya Taylor-Joy). Of course, this brought us that lovely gem of a Peaches song that kids sang for weeks after. The movie's mixed reviews are no match for its tremendous box office success, not to mention the fact that it broke a Guinness World Record to become the highest-grossing movie based on a video game and became the first movie based on a video game to gross more than $1 billion. It’s incredible to learn that with all these huge numbers, The Super Mario Bros. Movie only has a 59% Rotten Tomatoes critics score.
Watch The Super Mario Bros. Movie on Amazon Prime Video. 
Severance (2006)
Severance (2006) Trailer | Danny Dyer | Laura Harris

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What's on tap for Amazon Prime Video? This week, we're celebrating the approaching 30th anniversary of Crimson Tide, a terrific thriller by the late Tony Scott.  Our second pick is a sci-fi horror movie called Life, which may remind you of some famous movies in the genre. And if you want some romance in your life this week, the British rom-com called Picture This is still high on Prime Video's movie list.
The rest of the best movies on Amazon Prime can be found below. We update this list every Friday so you can get ready for the weekend with your top viewing options.
Need more recommendations? We’ve also put together guides to the best shows on Prime Video, the best movies on Hulu, the best movies on Netflix, the best new movies to stream, and the best movies on Disney+.

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Wall-E looks to the stars in Wall-E.

There's not a lot of action on the sci-fi front in Hulu's new movies for February. But there is a very special film on loan from Disney+: Wall-E, the 2008 winner for Best Animated Movie at the Oscars, and an incredible sci-fi story that still resonates nearly two decades later.
The only other sci-fi film of note added in February is Things Will Be Different, a different take on traveling through alternate timelines that gets the most out of its exceedingly small budget. You can find these films and the rest of the best sci-fi movies on Hulu below.
If you're curious about what's available in science fiction on other streaming services, we also have guides for the best sci-fi movies on Netflix, as well as the best sci-fi movies on Amazon Prime Video. For more options, check out guides for the best new movies to stream and the best movies on Hulu.

If you're looking for more films to watch, remember that Hulu is part of the Disney Bundle. That includes the basic Hulu subscription (with ads), Disney+, and ESPN+, all for just $17 a month. That's a great deal, and you don't even have to travel to the future for it.

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