The sci-fi movie genre is one of the most complicated in all cinema, and that is the way that most hardcore fans want it. These movies tell stories about complicated scientific topics, including time travel, paradoxes, space travel, alien existence, and even more supernatural unexplained phenomena. Much like horror movies, these are often all made-up topics and themes, but what makes sci-fi stand out is that the filmmakers try to keep it grounded in real science.
The biggest sci-fi movies often require more than one rewatch to catch everything, or piece together the puzzle created for viewers to enjoy. The movies often take sci-fi ideas and then twist them in interesting directions, so it remains a fresh take on even the oldest ideas. The best of these sci-fi movies either have ambiguous endings or they are complex ideas that require a person to actually break down the clues that led to the climactic moment.
Over the years, there have been plenty of fun sci-fi movies, with Colonial Marines gunning down Xenomorphs or farm boys learning how to fly X-Wing fighters to help save the galaxy. While those are beloved genre entries, it is the more complex and mind-bending entries that often become cult favorites within the genre.
10
Inception (2010)
Christopher Nolan’s Inception is a straightforward sci-fi movie idea with a lot of things added to it that make it confusing at times. The story is simple, as there is a team that has mastered technology that allows them to break into a person’s mind and steal secrets from them. In this movie, they are hired to do the opposite by someone who needs an idea planted in someone’s mind. In exchange, the team leader will get a chance to return home to his children.
That is where the mind-bending moment occurs. When Dom Cobb (Leonardo DiCaprio) finishes the job, the film ends with him at home with his kids. The twist is that each team member has a totem that they use to show whether they are in the real world or if they might be lost in the mindscape. Dom’s is a spinning top. If it stops spinning, he is in the real world. However, when he spins it at the end, he leaves the room without waiting to see. This is the ultimate twist, leaving audiences wondering whether anything is real.
9
Donnie Darko (2001)
Donnie Darko was director Richard Kelly’s directorial debut, and it was a sci-fi movie that exploded in popularity on home video and became an instant cult classic. Jake Gyllenhaal stars as Donnie, a teenager who happens to sleepwalk one day and avoids death when a jet engine crashes into his bedroom at his home. However, the movie then shows that Donnie is supposed to die, and the fact that he lives is threatening the world.
This is where the movie gained its cult following, because Donnie Darko refuses to give a straight answer to what is really happening and what might be in Donnie’s mind. In the ending, Donnie travels back through a time portal to allow the jet engine to kill him so he can save everyone he loves. By the end, nothing is clear, and while Kelly released a director’s cut that tried to explain more of the story, that actually hurt the movie. The best part of Donnie Darko is not understanding so much.
8
Primer (2004)
Primer is widely considered one of the most difficult movies for anyone to understand. Written, directed, edited, scored, and starring Shane Carruth in his directorial debut, the movie follows four engineers inventing things in a garage. Two of them create a time machine that sends people and objects through time, so each of the two decides to use it to improve their own lives.
The problem is that manipulating time in this way causes duplicates of the two to appear, and then everything starts to fall apart, starting with them trusting each other. With multiple versions of the characters, all working towards different goals, it becomes almost impossible to keep up, and Carruth never once slows down to explain what is happening, trusting the viewers to figure it out.
7
Coherence (2013)
Directed by James Ward Byrkit in his directorial debut, Coherence tells the story of a dinner party between eight friends on the night that Miller’s Comet passes Earth. However, their lives are turned upside down when the comet causes a power outage that also fractures reality. They then see another house that is an exact version of theirs, and soon they realize the people in the other house are their own variants.
When one person decides to replace their doppelgänger, hoping for a better life, nothing goes as planned. There’s no clear way to tell which version of any character is on the screen at any given time, and there is a chance an infinite number of doppelgängers could be out there. By the end, the movie hints at what happened throughout the night, but it never clarifies who survived and who really died.
6
Looper (2012)
Rian Johnson directed the sci-fi time travel movie Looper, which stars Joseph Gordon-Levitt as Joe, a hitman who kills people who are sent to him from the future to help cover up all the murders in that timeline. However, when his future self is sent back to be executed because his usefulness has ended, the younger version hesitates, and the older version then goes hunting for the child who will grow up to become a violent crime boss. Bruce Willis stars as the older version of Joe.
As with most time-travel movies, there are a lot of places that can go wrong, but Johnson keeps everything lined up well. Despite that, with two versions of the same character involved in the hunt, there is plenty of room to deliver mind-bending twists and turns. The biggest twist here is the paradox that Joe creates the crime lord, and young Joe has a chance to stop it.
5
Predestination (2014)
One of the most underrated sci-fi movies of the 21st century arrived in 2014 with Predestination. Directed by the Spierig Brothers, this is another time-travel movie that deals with paradoxes. In this case, based on the Robert A. Heinlein 1959 short story “All You Zombies,” Ethan Hawke plays a temporal agent sent through time to stop a terrorist who has eluded capture across several decades.
While time-travel movies are often complex, this one is especially dense, with the agent meeting different people and working with them, only to learn their connection is nothing he ever expected. The Agent, Jane, John, the Fizzle Bomber, and the baby Jane gave birth to are all the same person, meaning the lead character is his own mother, father, and child, one of the most mind-bending twists in all sci-fi movies.
4
Source Code (2011)
Duncan Jones made his name with the low-budget sci-fi movie Moon, which itself has a mind-bending twist regarding the identity of the only character aboard a space station on the moon. However, his follow-up had a much bigger budget and a much larger mind-bending twist. In Source Code, Jake Gyllenhaal plays Captain Colter Stevens, a man who wakes up on a train and has to find a terrorist before the train explodes.
The problem is that this is a time loop movie, and Colter dies over and over while taking over the body of someone on the train, and each time, he needs to put the clues together to figure out who the terrorist is. When the movie shows where Colter really is, it provides a terrifying moment, but then the ending leaves things open-ended, with audiences left to determine if his happy ending is real or if he is still trapped in his tragic state.
3
Enemy (2013)
Directed by Denis Villeneuve (Dune), Enemy stars Jake Gyllenhaal in two different roles. He stars as a Toronto history professor named Adam Bell, who rents a movie and spots an actor (Anthony Claire) who looks identical to him. The two men’s lives and identities become dangerously entangled, as they begin to wonder how they are connected, if they might be related, or if they are doppelgängers.
However, the movie takes a dark turn when Anthony seemingly dies, and Adam slips into Anthony’s life with Anthony’s pregnant wife, Helen. What makes this movie so mind-bending and puzzling is the ending, which includes a giant spider creature, and the film never reveals if anything was real, if there were ever two people, or if it was possibly just one man’s fractured psyche. This is one sci-fi movie that offers no answers.
2
Eternal Sunshine of the Spotless Mind (2004)
Directed by Michel Gondry from Charlie Kaufman’s screenplay, Eternal Sunshine of the Spotless Mind is one of the most brilliant and mind-bending movies ever made about trauma, separation, and fate. Jim Carrey stars as Joel Barish, a man who meets Kate Winslet’s Clementine Kruczynski, and the two develop a passionate relationship. However, in this world, a person can have all memories of a person erased from their mind, and Clementine does it when they break up.
Joel then decides to do it as well, and much of the movie shows the memories from his mind disappearing in a way that is heartbreaking and cathartic. Much of the story unfolds backward inside Joel’s collapsing memories, and when it ends, it makes it seem like this has happened before and will happen again, which delivers a brilliant story of a couple trying to escape their destiny.
1
Arrival (2016)
Arrival is a heartbreaking first-contact alien sci-fi movie. While the aliens’ arrival is important, it comes in second to the story of Amy Adams’ linguist, Dr. Louise Banks, and the discoveries she makes about herself. When 12 enormous alien craft appear at sites across Earth, Louise is recruited by the U.S. Army to decipher the heptapods’ written language before global tensions escalate into war.
However, the message that the aliens give to Louise reveals they are here because they will need Earth’s help in the future. That isn’t what is important. What is important is that the aliens also show Louise her future, and it turns out the traumatic experience that weighs her life down hasn’t happened yet. It is a movie that forces viewers to go back and watch it again to completely understand the story.