From Groundhog Day to Source Code, movie fans love a time loop story, where characters experience the same day over and over again, either to learn a personal lesson or to change what happens.
However, some entries in this sci-fi subgenre do something different, adding a new spin that transforms the time loop's narrative potential. Here are eight examples that no time loop fan should miss out on. Some spoilers ahead, but we'll try to leave the endings ambiguous where possible.
The Endless Uses Individual but Coexisting Time Loops
Directed by Aaron Moorhead, Written and Directed by Justin Benson
In The Endless, Aaron Moorhead and Justin Benson's brothers revisit the obscure religious group they left as children, despite having very different memories of what it was like to be members. The movie is a cult horror hit often praised for what it achieved with a small budget, and for having a compelling emotional journey laced through its sci-fi premise.
The main stakes of the movie see Aaron considering rejoining the cult, even once it's revealed that they're trapped in a loop where an eldritch entity repeatedly kills them.
However, there isn't just one time loop. Each cult member is trapped in their own loop of differing lengths, all ending with their death. In a particularly chilling scene, one man repeatedly suffers a grisly death in a five-second loop, his exhaustion even more terrifying than his actual demise.
The Endless uses its time loop as a metaphor for the allure of nostalgia, and the way that romanticizing the past can be an excuse for not moving forward. Its use of individual time loops allows it to express the danger of giving up, dialing up the horror as the brothers attempt to escape the same fate.
Palm Springs Follows the Third Person to Enter the Loop
Written by Andy Siara and Max Barbakow, Directed by Max Barbakow
Palm Springs tells a story that could only exist in a world where Groundhog Day is already a cultural touchstone. When Cristin Milioti's Sarah finds herself stuck in a time loop on the day of her sister's wedding, she quickly discovers she's not the first or even the second to be trapped.
Andy Samberg's hapless slacker and J. K. Simmons' rage-filled family man have been stuck in the loop for decades, setting up some dark reveals about how they've been spending their time. However, bringing Milioti into a 'community' of loopers helps to speed past her acclimation to the sci-fi premise - a necessary move for an audience already familiar with the concept.
Palm Springs uses its time loop as a metaphor for destructive patterns, making it perfectly fitting that Milioti isn't the first person to be trapped this way, and offering different expressions of the film's core theme of overcoming your baggage. It's also a fantastic comedy with great performances all around.
Happy Death Day's Time Loop Is a Killer
Written by Scott Lobdell, Directed by Christopher Landon
Happy Death Day's time loop repeats the birthday of Jessica Rothe's Tree Gelbman, with each cycle ending with her being murdered by a killer in a baby mask. Uniquely, Tree isn't just trapped - her repeated deaths are causing lasting injuries, introducing a ticking clock.
Surprisingly, Tree's killer isn't some magical part of the loop - they're a regular human killer who can be outwitted if she plays her cards right. This decision makes Tree's time loop feel urgent - she isn't trapped in some predestined cycle, and she needs to use every day to explore a new possibility as to who's killing her.
Like most time loop movies, Happy Death Day is about personal growth, but Tree's progress comes as a result of her frantic attempts to unmask a murderer, imbuing a thrilling intensity to her journey.
Happy Death Day is arguably the best time loop comedy since Groundhog Day, with multiple sequences that make the most of Tree repeating the same day with a rapidly changing outlook on other people. It also concludes with a fantastic twist ending that we won't spoil here.
Donnie Darko Hides Its Time Loop Rules
Written and Directed by Richard Kelly
Image via MovieStillsDB.comDonnie Darko follows Jake Gyllenhaal's mixed-up teenager as he suffers a series of precognitive visions - or potentially just hallucinations - about somehow averting the end of the world via time travel. The visions are actually Donnie's intuitions from previous time loops, though the movie doesn't exactly spell that out.
For those interested in the deep lore, tie-in book The Philosophy of Time Travel lays out exactly what's going on, but it's part of the point that most of the time travel/alternate reality lore is discerned from vibes, hindsight and deduction.
Donnie doesn't know what's happening or why, and neither does the audience, recreating the angst of being a teenager who is starting to question the world around them and their place in it. Is Donnie's world even worth saving, and if so, why?
Even when time loop movies 'hide' their endgame, it's almost always apparent what the main character needs to accomplish to escape, at least in emotional terms. Donnie Darko doesn't offer viewers that clarity, but its weirdness is 100% intentional and has a purpose.
The Matrix Reloaded Is the Very End of a Time Loop
Written and Directed by Lana Wachowski and Lilly Wachowski
Most time loop movies show us the whole time loop, but The Matrix Reloaded skips to the very end. The first movie in the trilogy (and most of the second) set Keanu Reeves' Neo up as 'The One' - the prophesied leader who will free humanity from their digital prison.
However, when Neo meets the Matrix's Architect, he finds out it's all a lie - and one that has played out again and again. The Matrix created the idea of 'The One,' and Neo is actually the sixth person to hold the title. Every other time, when the One reached the Architect, the Matrix was rebooted and the cycle began again, with the Matrix improving itself based on the data collected.
Thankfully, Neo breaks the loop because of his love for Trinity, finally ending a cycle that's been playing out for centuries and ultimately freeing humanity from the Matrix... kind of.
The Matrix Reloaded isn't universally beloved by any measure, but it's a stunningly ambitious sequel, taking everything about The Matrix and mercilessly expanding the scale and stakes in the direction of hard sci-fi.
Timecrimes' Time Loop Includes All Your Previous Selves
Written and Directed by Nacho Vigalondo
This 2007 pseudo-slasher (released in Spain as Los cronocrímenes) stars Karra Elejalde as Héctor - a man trapped in a time loop, gradually learning more about his situation in a way that puts him at odds with his previous selves.
Timecrimes continually builds on what came before, rewarding the viewer's insight and intelligence. While events repeat in a loop, Héctor's perspective gives each cycle a radically different context, totally playing against the Groundhog Day model, where the trapped character begins to find the world more and more predictable.
2009's Triangle pulls a similar trick, but Timecrimes got there first, and is arguably the smarter film for how consistently it treats its time loop rules.
Primer Brings Scientific Realism to the Time Loop
Written and Directed by Shane Carruth
2004's Primer follows Shane Carruth's Aaron and David Sullivan's Abe as they invent a short-distance time machine, living the same day again and again. But when the two end up at odds, the timestream becomes their personal battleground.
This low-budget film is famously obsessed with the realism of scientific discovery, and here the time loop stands in for the consequences of any paradigm-changing invention.
Aaron and Abe's different attitudes to the consequences of their discovery is a major focus, and the process of taking part in the loop is depicted as draining and potentially dangerous.
The movie skillfully evokes the experience of changing the world, then coming to understand that it may not have been for the better. At the same time, there's a belated coming-of-age theme, as the two friends grow apart due to their different priorities.
Run Lola Run Makes Its Time Loop a Superpower
Written and Directed by Tom Tykwer
In 1998's Run Lola Run, the titular character (played by Franka Potente) attempts to save her boyfriend's life by recovering a bag of money. Every time she fails in her attempt, time restarts, like failing a level in a videogame. Thankfully, Lola retains an instinctive sense of what went wrong last time.
Time loop movies are generally slow-moving, seeing a character learn a personal lesson through iteration and introspection. Run Lola Run is the exact opposite, defined by kineticism and a focus on practical obstacles.
Most time loop movie protagonists are broken down by the loop, becoming better people by steadily confronting their flaws. In contrast, Lola uses it like a superpower, with the film emphasizing the impact of her decisions and actions on others.
Those were eight time loop movies that did something totally new with the premise - let us know in the comments below what other time loop films belong on this list and why.
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