10 Sci-Fi Movies That Are Definitely Not for Kids

Image via Universal Pictures Published Aug 3, 2026, 7:51 AM EDT Sign in to your Collider account This genre gets sold with spaceships, robots, strange planets, and cool technology whether the story carries substance or not. Then some films use those same ingredients to talk about bodily violation, war, exploitation, grief, sexual control, and the fear that human beings may be the ugliest thing in the room. But that’s cliche too at this point. So when a sci-fi film needs to stand out, it needs to do more. The movies on this list do more in a different way. These are not family-night picks with a few scary scenes. They are adult films built around disturbing ideas, difficult images, and questions that stay uncomfortable long after the credits. A younger viewer might be impressed by the effects. An adult is more likely to recognise the anger, loneliness, political cruelty, or existential dread hiding underneath them. If that interests you, scroll down slowly. 'Upgrade' (2018) Image via OTL Releasing Upgrade begins as a revenge thriller set in a near future where technology has entered nearly every part of daily life. Grey Trace (Logan Marshall-Green) distrusts that world until a violent attack kills his wife and leaves him paralysed. An experimental computer chip called STEM restores movement to his body, and Grey soon discovers that the system can do far more than help him walk. It can fight, analyse threats, and act with a speed his human brain cannot match. The action is brutal, but the adult edge comes from the loss of control. Grey may look stronger after the implant, yet every victory makes the relationship between body and machine more unsettling. The story is lean, nasty, and increasingly suspicious of every technological promise. Watch it for the bone-snapping fights, then stay for the much darker question about who is actually using whom. 'Event Horizon' (1997) Image via Paramount Pictures A rescue crew travels to Neptune after the Event Horizon suddenly reappears seven years after vanishing during an experimental voyage. The ship was designed to create an artificial black hole and travel across impossible distances. Something went wrong during the first test, and the empty corridors now contain evidence that the crew reached a place nobody was meant to find. That’s Event Horizon for you. This movie is messy in places, but its best ideas are genuinely frightening. Put it on late at night, turn the lights off, and let that ship ruin deep space for you. It starts with hard science-fiction language and turns into full cosmic horror. The production design mixes industrial machinery with religious architecture. The ship resembles a cathedral built for pain. Captain Miller (Laurence Fishburne) has that steady authority that any and every Fishburne character does. Dr. Weir (late Sam Neill) becomes increasingly tied to whatever came back with the vessel. Gore, hallucinations, self-mutilation, and flashes of hellish imagery explain the R rating very quickly. If you get the idea I’ve tried painting so far, you’ll love it. 'Possessor' (2020) Image via NEON Corporate assassins in Possessor carry out murders by taking control of other people’s bodies. Tasya Vos (Andrea Riseborough) enters a host’s mind through implanted technology, completes the assignment, and then forces the host to die so she can return to herself. Her latest job places her inside Colin Tate (Christopher Abbott), whose relationship with a wealthy family gives the company access to its next target. The process then starts breaking down when Colin resists her control. Brandon Cronenberg (the director) takes the body-horror interests associated with his family name and pushes them into questions about identity, labour, and emotional detachment. Tasya’s character spends so much time becoming other people that her own home life seems distant and rehearsed. Tate brings an entirely different energy once he begins fighting for ownership of his mind. The violence is intimate, graphic, and deliberately hard to watch. Possessor is the pick for viewers who want science fiction that leaves them fascinated, slightly sick, and eager to argue about whose personality survived. 'The Fly' (1986) Image via 20th Century Studios The Fly is romantic, sad, funny, revolting, and far more human than most respectable dramas. Watch it when you want a horror film with a real heart beating under all the slime. A brilliant scientist believes he has solved teleportation. Seth Brundle (Jeff Goldblum) can move objects between two pods, but living tissue remains the final challenge. After successfully transporting himself, he starts feeling stronger, faster, and more confident. He later learns that a fly entered the pod with him and that the computer fused them at a genetic level. Not to mention that this is a remake of a 1958 film. And David Cronenberg’s remake is famous for body horror, though reducing it to melting flesh and practical effects misses half the experience. Seth’s transformation also resembles terminal illness, addiction, and the terror of watching someone you love become unrecognisable. Jeff Goldblum and Veronica Quaife (Geena Davis) create a relationship warm enough to make every physical change hurt. All that counts. The effects remain astonishingly disgusting, but the emotional damage hits harder than the makeup. 'District 9' (2009) Image via TriStar Pictures An alien spacecraft stalls above Johannesburg, and its starving passengers are eventually confined to a government-controlled settlement called District 9. Years later, officials decide to relocate them to another camp. Wikus van de Merwe (Sharlto Copley), a nervous employee of the private military company handling the operation, leads the eviction effort until exposure to alien technology changes his body and destroys his place in human society. That premise allows District 9 to thrill a crowd and still leave everyone arguing about complicity on the drive home. The documentary-style opening makes the discrimination feel disturbingly normal too. Aliens are insulted, exploited, experimented on, and discussed as a public nuisance by people who profit from keeping them powerless. South Africa’s history of forced removals and apartheid gives the premise an unmistakable political charge. Wikus begins as part of the system and only develops empathy once the same system targets him. The film eventually erupts into heavy weapons, mech combat, and gruesome violence, but the anger underneath never disappears. 'Ex Machina' (2014) Image via A24 In Ex Machina, a young programmer wins a private visit to the isolated home of Nathan Bateman (Oscar Isaac), the billionaire behind the world’s dominant search engine. Caleb Smith (Domhnall Gleeson), the intern, soon learns the real purpose of the trip. Nathan has created an artificial intelligence named Ava (Alicia Vikander) and wants Caleb to decide whether her consciousness is genuine. Their conversations take place through glass while cameras observe every reaction. The setup looks clean and controlled, but the house is full of power imbalances. Nathan owns the building, the information, and the bodies inside it. Caleb wants to believe his empathy makes him different, though attraction quickly interferes with judgment. Alicia Vikander’s Ava remains compelling without being reduced to innocence or threat, and Oscar Isaac turns Nathan’s confidence into something increasingly ugly. The film includes nudity, coercion, violence, and enough psychological manipulation to make every conversation suspect. So while it’s not for everybody, Ex Machina is perfect for anyone who likes leaving a movie with three theories and no trust left in the person sitting beside them. That’s a joke. Or not. 'Annihilation' (2018) Image via Paramount Pictures A strange zone called the Shimmer is expanding across the American coastline. Few people return after entering it, and those who do come back are changed. It is gorgeous, frightening, and strange enough to make a second viewing feel almost necessary. Lena (Natalie Portman), a biologist and former soldier, joins an all-female expedition hoping to understand what happened to her husband during an earlier mission. Inside the Shimmer, plants, animals, landscapes, and human bodies begin combining in ways that break every familiar biological rule. It’s almost like Alex Garland adapted Jeff VanderMeer’s novel into something less interested in invasion than transformation. The women enter with different private wounds, and the environment seems to reflect their fear, grief, illness, and self-destructive impulses back at them. The infamous bear is terrifying, yet some of the quieter images are even harder to process. Flowers grow in human shapes. Memories lose their stability. DNA behaves like language being rewritten. That’s Annihilation. 'Under the Skin' (2013) Image via A24 Under the Skin is slow, cold, and hypnotic. Give it your full attention and it becomes the kind of film that quietly follows you home. An unnamed woman (Scarlett Johansson) drives around Scotland, approaching lonely men and inviting them into a house where they disappear beneath a black liquid surface. She looks human, speaks calmly, and studies attraction with the distance of someone performing a task she barely understands. Gradually, contact with ordinary people begins changing how she sees them and herself. Scarlett Johansson filmed several encounters with unsuspecting members of the public, which gives the early conversations an awkward reality, authenticity, that no normal casting process could create. Jonathan Glazer strips away familiar science-fiction explanations and lets behaviour, sound, and imagery carry the experience. Nudity appears but without comfort, sex becomes predatory, and the human body looks vulnerable from every angle. Collider Exclusive · Sci-Fi Survival Quiz Which Sci-Fi World Would You Survive? The Matrix · Mad Max · Blade Runner · Dune · Star Wars Five universes. Five completely different ways the future went wrong — or sideways, or up in flames. Only one of them is the world your instincts were built for. Eight questions will figure out which dystopia, galaxy, or desert wasteland you'd actually make it out of alive. 💊The Matrix 🔥Mad Max 🌧️Blade Runner 🏜️Dune 🚀Star Wars TEST YOUR SURVIVAL → 01 You sense something is deeply wrong with the world around you. What do you do? The first instinct is often the truest one. APull on every thread until I understand the system — then figure out how to break it. BStop asking questions and start stockpiling — food, fuel, weapons. Questions don't keep you alive. CKeep my head down, observe carefully, and trust no one until I know who's pulling the strings. DStudy the patterns. Every system has a rhythm — learn it, and you learn how to survive it. EFind the people fighting back and join them. You can't fix a broken galaxy alone. NEXT QUESTION → 02 In a world of scarcity, what resource do you guard most fiercely? What we protect reveals what we believe survival actually requires. AKnowledge. If you understand the system, you don't need resources — you can generate them. BFuel. Everything else — movement, power, escape — runs on it. CTrust. In a world of fakes and informants, a truly reliable ally is rarer than any commodity. DWater. And after water, information — the two things empires are truly built on. EShips and credits. The galaxy is big — you survive it by being able to move through it freely. NEXT QUESTION → 03 What kind of threat keeps you up at night? Fear is useful data — if you're honest about what you're actually afraid of. AThat reality itself is a lie — that everything I experience has been constructed to keep me compliant. BA raid. No warning, no mercy — just the roar of engines and then nothing left. CBeing identified. Once someone with power decides you're a problem, you're already out of time. DBeing outmanoeuvred — losing a political game I didn't even know I was playing. EThe Empire tightening its grip until there's nowhere left to run. NEXT QUESTION → 04 How do you deal with authority you don't trust? Every dystopia has a power structure. Your approach to it determines everything. ASubvert it from the inside — learn its rules well enough to weaponise them against it. BIgnore it and stay out of its reach. The further from any power structure, the better. CAppear to comply while doing exactly what I need to do. Visibility is the enemy. DManoeuvre within it carefully. You can't beat a system you refuse to understand. EResist openly when I have to. Some things are worth the risk of being seen. NEXT QUESTION → 05 Which environment could you actually endure long-term? Survival isn't just tactical — it's physical, psychological, and very much about where you are. AUnderground bunkers and server rooms — cramped, artificial, but with access to everything that matters. BOpen wasteland — brutal sun, no shelter, constant movement. At least the threat is honest. CA dense, rain-soaked city where you can disappear into the crowd and nobody asks questions. DMerciless desert — extreme heat, no water, and something enormous living beneath the sand. EThe fringe — backwater planets and busy spaceports where the Empire's attention rarely reaches. NEXT QUESTION → 06 Who do you want in your corner when things fall apart? The company you keep is the clearest signal of who you actually are. AA tight crew of believers who've seen behind the curtain and have nothing left to lose. BOne or two people I'd trust with my life. Any more than that and someone talks. CNobody, ideally. Alliances are liabilities. I work alone unless I have no choice. DA community bound by shared hardship and mutual survival — people who need each other to last. EA ragtag team with wildly different skills and total commitment when it counts. NEXT QUESTION → 07 Where do you draw the line — if you draw one at all? Every survivor eventually faces a moment that tests what they're actually made of. AI won't harm the innocent — even the ones who'd report me without hesitation. BI do what I have to to protect the people I've chosen. Everything else is negotiable. CThe line shifts depending on who's asking and what's at stake. DI draw a long-term line — nothing that compromises my people's future, even if it'd help now. ESome lines, once crossed, can't be uncrossed. I know which ones they are. NEXT QUESTION → 08 What would actually make survival worth it? Staying alive is one thing. Having a reason to is another. AWaking others up — dismantling the illusion so no one else has to live inside it. BFinding somewhere — or someone — worth protecting. A reason to keep moving. CAnswers. Understanding what I am, what any of this means, before time runs out. DLegacy — shaping the future in a way that outlasts me by generations. EFreedom — for myself, for others, for every world still living under someone else's boot. REVEAL MY WORLD → Your Fate Has Been Calculated You'd Survive In…Your answers point to the world your instincts were built for. This is the universe your temperament, your survival instincts, and your particular brand of stubbornness were made for. The MatrixYou took the red pill a long time ago — probably before anyone offered it to you. You're a systems thinker who can't help but notice the seams in things. You're drawn to understanding how the system works before figuring out how to break it. You'd find the Resistance, or it would find you — your instinct for spotting constructed realities is the machines' worst nightmare. You function best when you have access to information and the freedom to act on it. The Matrix built an airtight prison. You'd be the one probing the walls for the door. Mad MaxThe wasteland doesn't reward the clever or the well-connected — it rewards those who are hard to kill and harder to break. That's you. You don't need comfort, community, or a cause larger than the next horizon. You need a vehicle, a clear threat, and enough fuel to outrun it — and you're good at all three. You are unsentimental enough to survive that world, and decent enough — just barely — to be something more than another raider. In the wasteland, that distinction is everything. Blade RunnerYou'd survive here because you know how to exist in moral grey areas without losing yourself completely. You read people accurately, keep your circle small, and ask the questions others prefer not to answer. In a city where humanity is a legal designation rather than a feeling, you hold onto something that keeps you functional. You're not a hero. But you're not lost, either. In Blade Runner's world, that distinction is everything. DuneArrakis is the most hostile environment in the known universe — and you are precisely the kind of person it rewards. Patience, discipline, and political awareness are your core strengths — and on Arrakis, they're survival tools. You understand that the long game matters more than any single victory. Others come to Dune and are consumed by it. You'd learn its logic and earn its respect. In time, you wouldn't just survive Arrakis — you'd begin to reshape it. Star WarsThe galaxy far, far away is vast, loud, and in a constant state of violent political upheaval — and you wouldn't have it any other way. You find meaning in being part of something larger than yourself — a cause, a crew, a rebellion. You'd gravitate toward the Rebellion, or the fringes, or whatever pocket of the galaxy still believes the Empire's grip can be broken. You fight — not because you have to, but because standing aside isn't something you're capable of. In Star Wars, that willingness is what makes all the difference. ↻ RETAKE THE QUIZ 'Children of Men' (2006) Image via Universal Pictures Humanity has been infertile for nearly two decades, and the youngest person alive has just died. Britain survives through authoritarian control while refugees are hunted, caged, and deported. Theo Faron (Clive Owen) has stopped believing in political causes until his former partner asks him to help transport Kee (Clare-Hope Ashitey), a young refugee carrying the first known pregnancy in eighteen years. The premise is huge, yet the movie stays close to streets, buses, safe houses, checkpoints, and frightened people trying to keep one woman alive. Alfonso Cuarón’s long takes place the viewer inside violence. Theo begins emotionally numb, while Kee’s pregnancy forces him to imagine a future again. War, state cruelty, terrorism, grief, and childbirth all collide without easy speeches about hope. Children of Men is exhausting in the best way. It leaves you desperate for the characters to reach safety and furious at how recognisable their world has become. 'The Thing' (1982) Image via Universal Pictures The Thing gives you monsters, gore, mystery, and this highly debated closing moment without spelling out the answer. Watch it with friends and enjoy distrusting every single one of them afterward. A research team in Antarctica discovers an alien organism capable of absorbing and perfectly imitating other living creatures. Nobody knows when the infection began or who has already been replaced. The isolated station becomes a pressure cooker where trust disappears faster than the temperature drops. John Carpenter’s film arrived to harsh reviews in 1982 and later earned its place among the greatest science-fiction horror movies ever made. Rob Bottin’s practical effects still look grotesque, imaginative, and physically wrong in ways digital work rarely matches. MacReady (Kurt Russell) has no magic solution, only observation, improvisation, and a flamethrower. The blood test, the scale of it is great but the paranoia surrounding it is even better. Every conversation could be happening with something pretending to be human. It’s a great film, and so not for kids. The Thing Release Date June 25, 1982 Runtime 109 minutes