The underground passage is spotless. Its white tiles reflect the fluorescent lights, the advertisements sit neatly behind their frames, and an overhead sign directs commuters towards Exit 8. Nothing about the place suggests danger. That is rather the point: these are spaces designed to disappear from our attention while we concentrate on getting somewhere else, and it is precisely that invisibility which makes them unsettling once the usual stream of people has gone.
Genki Kawamura’s Exit 8 takes that familiar public-space discomfort and makes it the basis of an unusually economical psychological horror film. A man finds himself trapped inside a repeating underground passage where the only way out is to notice anything abnormal. If he sees an anomaly, he must turn back; if everything appears normal, he must continue. Getting the decision wrong returns him to the beginning, regardless of how close he thinks he is to leaving.
On paper, it sounds like the sort of idea that might make a good five-minute short, or perhaps a particularly unpleasant experience on the way home after a long day. What interests me is how much the film manages to extract from such a simple mechanism. It understands that an ordinary corridor can feel threatening without filling it with monsters, and that a man who keeps making the same mistakes may have a problem extending well beyond the architecture.
A Very Small Game with an Unusually Large Shadow
The film is adapted from The Exit 8, the independent game released by Kotake Create in November 2023. Its central idea is almost aggressively minimal: walk along a single underground passage and keep track of its details. An advertising poster may be different, a door may be behaving strangely, or the man walking towards you may not be quite as ordinary as he was a moment ago. The game does not reward speed or combat skills; it rewards the rather less fashionable ability to pay attention.
I rather like the audacity of that design. Modern games can spend enormous amounts of time reassuring us of their scale, offering bigger maps, longer campaigns and more things to collect. The Exit 8 gives us a handful of surfaces and makes us suspicious of every centimetre. Even an unchanged corridor is stressful, because the absence of a visible anomaly might simply mean that we have failed to spot it. There is no comfortable moment when the player can stop examining the background.
The game belongs to the larger internet fascination with liminal spaces: those transitory interiors that become strangely oppressive when separated from their normal purpose. People often compare the effect with the Backrooms, although The Exit 8 feels more disciplined and more recognisably Japanese. The signage, floor tiles, light fittings and institutional neatness are not generic dream imagery. They are the visual habits of a real city, reorganised until familiarity becomes a trap.
That left Kawamura and his co-writer Kentaro Hirase with a fairly awkward adaptation problem. A player can make a corridor interesting through the act of searching it, but a film cannot assume that ninety-five minutes of passive observation will create the same involvement. The answer was to retain the puzzle while giving the Lost Man a reason to be trapped, one connected to the choices he has been avoiding outside the station.
A Commuter Who Would Rather Not Become Involved
Kazunari Ninomiya plays the Lost Man, an anonymous commuter whose first real decision is to avoid making one. On a crowded train he watches a furious passenger harass a mother whose baby will not stop crying. The other commuters retreat into their phones and private thoughts, while he visibly considers intervening and then does nothing. It is uncomfortable because the behaviour is so recognisable; most of us know that public-transport calculation between wanting to help and wanting the journey to end without becoming part of someone else’s argument.
A telephone call from his former partner, played by Nana Komatsu, adds another responsibility he cannot quite face. She is pregnant, and he is uncertain about what fatherhood would demand of him. The corridor then reduces his world to a choice that cannot be deferred: either recognise what is wrong and respond correctly, or return to the beginning. He may have spent years getting away with indecision, but here it has an exact and rather punitive result.
Ninomiya does not play him as a heroic problem-solver, and that is a relief. He looks tired, anxious and increasingly irritated by the sheer unfairness of the situation. Sometimes his reactions are funny in the way real frustration can be funny, particularly when someone is trying very hard to remain rational in circumstances that have stopped being rational at all. The performance gives the film a human anchor without turning its protagonist into the sort of capable genre veteran who already knows what every strange noise means.
The Corridor Has Better Graphic Design Than Most Nightmares
The production design is one of the main reasons the premise works. The corridor is not shabby, abandoned or theatrically sinister; it is well maintained, brightly lit and covered in the familiar visual language of public transport. White ceramic tiles, identical doors, advertisements and yellow directional signage make a functioning system of visual information. In a normal station those details help people move without thinking, but here they form a puzzle in which every piece of reliable information is suddenly open to dispute.
I find the film especially interesting from a design perspective. Public wayfinding depends on consistency: the colour of a sign, the position of an arrow and the repetition of standard graphic elements create an expectation that the environment can be trusted. Exit 8 takes those same principles and turns them against us. Once we start wondering whether a poster has changed or whether the sign at the end is telling the truth, the most ordinary parts of the built environment become suspicious.
Kawamura and cinematographer Keisuke Imamura pursued that effect largely through practical methods. The crew constructed two closely matched corridors that allowed extended looping movements, rather than simply relying on a computer-generated tunnel. The production nicknamed the paired sets Hitchcock and Kubrick. Kawamura also wanted the film to possess the oddly artificial look of a game engine while keeping its surfaces and camera movement physically convincing, an approach that gives the repetition an unnerving solidity.
The camera is equally important. Its earlier first-person movement echoes the game’s viewpoint, but the film also pulls outside the protagonist’s perspective and lets us inspect him. We are asked to hunt for changes in the walls while noticing the accumulating changes in his behaviour. It is a small but intelligent adjustment: the audience becomes both player and observer, not entirely sure whether the most important anomaly is somewhere in the corridor or walking through it.
The Man Who Walks Past and Never Arrives
Yamato Kochi’s Walking Man is a marvellous piece of restrained discomfort. In his light-coloured shirt and business trousers he initially seems like any other commuter with somewhere to be. His expression is fixed in an almost agreeable smile, and his movement is routine enough to become predictable. Yet the longer he returns, the more difficult it becomes to accept him as part of the ordinary world. He has the faintly dreadful quality of an office worker condemned to repeat the same Monday morning forever.
It is the slight changes in this figure, rather than any elaborate creature effect, that make some of the film’s strongest moments. A small alteration in expression can become more alarming than something overtly monstrous, because by then the audience has been trained to notice a face as closely as a sign. His backstory later gives the repetition a moral weight: he is connected to a failure of responsibility, and the corridor has effectively turned that failure into a job from which he cannot resign.
The concept is rather cruel but not entirely far-fetched as a metaphor. Plenty of people live inside routines they no longer question, going through the motions while the reasons for those motions have quietly disappeared. The Walking Man makes that condition literal. He has movement without progress, purpose without destination, and just enough of a pleasant expression to make the situation considerably worse.
The Boy Changes the Rules
When the Boy, played by Naru Asanuma, enters the narrative, the film risks compromising the isolation that made its opening so effective. The game is frightening partly because the player is alone with their own judgement; giving the Lost Man a companion might have made the whole business less oppressive. It also introduces the danger of a very familiar dramatic device: a child who exists primarily to teach a reluctant adult how to behave.
To the film’s credit, the relationship grows through practical cooperation rather than speeches. The child notices details, responds to danger and sometimes understands the environment more quickly than the man trying to protect him. The Lost Man must begin considering whether the correct escape route is also the correct choice for someone else. Their relationship introduces a new kind of uncertainty, one no amount of careful poster inspection can resolve.
The shell the Boy gives him is a small but important counterweight to the corridor’s endless visual repetition. It matters not because of its position on the wall or its ability to signal an anomaly, but because it has become part of a connection between two people. At the same time, the pregnant Woman remains largely beyond the passage, a reminder of an unfinished conversation and of the future the protagonist has been avoiding. The film’s emotional structure is not difficult to decipher, though at its best it allows behaviour to carry that meaning before spelling it out.
Horror for People Who Look at the Background
The film’s most enjoyable trick is the way it teaches viewers to become amateur inspectors. Once the rules are established, every new passage becomes an invitation to compare what we see with what we remember. The advertisements, lockers, doors and ceiling are no longer background dressing. They are evidence, and it is quietly satisfying when we notice something before the character does, even if that satisfaction often lasts only until the next mistake.
The anomalies range from small and almost plausible deviations to events that make the corridor openly hostile. I prefer the subtle ones, partly because the film has been so good at making us distrust ordinary details. The more spectacular disturbances raise the stakes, but they can also weaken the original idea that almost nothing needs to happen to make this place frightening. A poster behaving incorrectly is often enough; I do not necessarily need the building to demonstrate its full supernatural abilities.
There is also a curious humour to this style of horror. When you have been checking the same wall repeatedly, the idea of missing something obvious becomes personally irritating. The film understands that irritation and occasionally lets us laugh at the absurdity of the instructions. It is an oddly familiar response to modern systems: follow the rules exactly, discover that you have failed anyway, and return to the beginning to complete the form again.
The Sound of a Place That Cannot Stop Repeating
Sound does much of the atmospheric work. Footsteps rebound from the tiles, the ventilation seems to continue without purpose, and the low mechanical ambience suggests a public building functioning perfectly well without any need for passengers. The film resists the temptation to cover every quiet moment with orchestral alarm, allowing the corridor to sound like a corridor for long enough that small changes become disturbing.
Yasutaka Nakata and Shohei Amimori approach the score from complementary directions, bringing together synthetic unease and a more explicitly human emotional register. The use of Ravel’s Boléro is particularly apt: its familiar repeated idea gradually acquires force through accumulation and arrangement. That is close to the structure of the film itself, where a modest collection of visual elements becomes more oppressive each time we encounter it.
I enjoy that kind of musical logic in a horror film. Repetition is often treated as a technical problem that needs to be disguised with constant novelty, but here it is the mechanism that makes everything uncomfortable. The sound design, the movement of the camera and even the shape of the corridor work together to establish a rhythm that refuses to release us.
The Flood and the Choice Behind the Exit
By the final act, the corridor has moved from uncomfortable repetition into a much more openly threatening ordeal. The rush of water changes the scale of danger, replacing careful observation with the instinct to keep another person alive. Against the background of Japanese disaster imagery, the sequence carries an emotional charge considerably larger than the earlier anomalies. It is also the moment when the film most clearly demands that the Lost Man stop measuring success purely by whether he can escape.
The possible future involving the Boy and the protagonist’s pregnant partner connects his present predicament with the life he has been reluctant to accept. Protecting the child matters more than reaching the next numbered exit, and the small shell becomes a reminder that the relationship is real even when the surrounding space is not. The emotional reversal makes sense: a man introduced through his failure to intervene is finally willing to take a risk for someone else.
I can understand why Kawamura chose this ending, although I think it is also where the film becomes a little too determined to explain itself. The symbolism of the Boy, the Lost Man’s reluctance about fatherhood and the corridor’s moral consequences fits together almost too neatly. The story had been more disturbing when its rules were exact but its purpose remained uncertain, and I would have welcomed a little more of that uncertainty once the physical ordeal was over.
What I like more is the return to the crowded train and the confrontation involving a mother and her crying baby. The circumstances have changed very little, which makes the protagonist’s response matter. Rather than asking us to watch another spectacular escape, the film places him back inside the mundane situation he previously chose to ignore. We do not need a long explanation of what he does next; the important difference is that he has stopped pretending not to notice.
A Clever Idea That Occasionally Shows Its Working
At ninety-five minutes, Exit 8 is restrained compared with many contemporary thrillers, but there are stretches where the basic mechanism begins to wear thin. Some loops are engrossing because we are actively examining the background; others simply repeat the protagonist’s frustration. I occasionally wondered whether a slightly shorter running time might have preserved the sense of discovery and reduced the feeling that the film needed another reset before arriving at its point.
Its emotional design is similarly effective and slightly heavy-handed. Ninomiya’s performance gives the material vulnerability, the Boy creates a meaningful change in the stakes, and the Walking Man provides a genuinely unsettling reflection of what avoidance can become. Nevertheless, the film becomes more conventional as it moves towards a clear lesson about moral responsibility. It is not a fatal problem, but I find myself more attached to the strange open-ended discomfort of the earlier scenes than to the tidy psychology of the conclusion.
There is much to admire in the adaptation’s technical confidence. Its Cannes Midnight Screenings selection was an appropriate home for a film that sits somewhere between interactive puzzle, psychological drama and uneasy genre experiment. More importantly, it finds a cinematic use for a game whose pleasures are inseparable from observation, rather than simply reproducing a sequence of recognisable moments for existing fans.
The Things We Stop Seeing
I suspect what will stay with me about Exit 8 is not its biggest anomaly or even the final flood, but the unnerving possibility that an ordinary hallway has become unfamiliar because somebody has finally paid attention to it. The film is at its strongest when it trusts its environment, its performers and our own eyes to do the work, leaving the meaning to emerge gradually from repeated walks past the same white tiles.
There is something uncomfortably recognisable in that, particularly in cities where we are surrounded by instructions, advertising and other people while being encouraged to move along without interruption. We depend on the visual order of those places precisely because we do not wish to think about them. The next time I see an empty tiled passage and a yellow exit sign, I may give the posters a slightly longer look. I would prefer not to find out that I have been here already.
Production notes and further reading
Production and cast credits: Festival de Cannes — Exit 8; AOI Pro. film production profile. Practical corridor construction and filmmaking approach: TheWrap interview with Genki Kawamura; Rue Morgue interview. Film stills and press notes: Toho press material via SciFi Japan.
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