The official trailer for Backrooms has finally arrived, and it looks like A24 is ready to turn one of the internet’s most unsettling creepypasta concepts into a full-blown cinematic nightmare. Starring Renate Reinsve, this upcoming horror film dives deep into the eerie, fluorescent-lit maze that has haunted online imaginations for years—and now it’s coming to the big screen with a fresh, elevated twist.
Backrooms is set for US release on May 29, 2026, and it brings together an impressive ensemble cast: Avan Jogia, Chiwetel Ejiofor, Finn Bennett, Lukita Maxwell, Mark Duplass, and Renate Reinsve. The film is directed by Dan Cohen and Kane Parsons, the latter being the young filmmaker whose viral Backrooms short films helped cement the mythos as one of the defining horror phenomena of the digital age. With A24 behind it, this movie is positioned to be one of the most anticipated horror releases of 2026.
The trailer wastes no time pulling viewers into the unsettling atmosphere that fans of the Backrooms concept will recognize instantly. Harsh fluorescent lights, stained yellow walls, endless empty hallways, and that oppressive hum in the background all combine to create a sense of dread that’s more about mood and space than jump scares. It’s liminal horror at its finest—spaces that feel familiar yet deeply wrong, like a dream you can’t wake up from.
The film’s central hook is beautifully simple and incredibly effective: a strange doorway appears in the basement of a furniture showroom. That mundane, almost boring setting makes what follows even more disturbing. One moment, you’re in the real world among couches and chairs; the next, you’ve slipped into a reality that shouldn’t exist. This plays directly into the core Backrooms lore—an alternate dimension of endless, empty rooms you “noclip” into by accident, with no clear way out.
Renate Reinsve, known for her breakout role in The Worst Person in the World, brings a grounded emotional intensity to the trailer. Even in the brief glimpses we get, her performance looks like it will anchor the film in real human fear and confusion, rather than treating the Backrooms purely as a visual gimmick. Surrounded by a cast that includes genre veterans and rising stars like Chiwetel Ejiofor, Avan Jogia, and Mark Duplass, Backrooms is clearly aiming for character-driven horror within an unreal environment.
What stands out most in the trailer is the sense of scale and escalation. We see tight, claustrophobic corridors and then vast, cavernous spaces that dwarf the characters. The Backrooms aren’t just a single unending office-like floor; they appear to morph into different zones and levels, each more dangerous and disorienting than the last. Fans of the original mythos will immediately recognize this idea of “levels” and the hidden logic of the Backrooms universe, while newcomers will get drawn in by the sheer visual strangeness of it all.
A24’s touch is evident in the cinematography and sound design teased in the trailer. This isn’t just a monster-chasing-you movie; it’s horror rooted in unease, liminality, and the terror of being lost in a place that doesn’t follow normal rules. Long, lingering shots, minimal but piercing sound effects, and a color palette dominated by sickly yellows and sterile whites create a sensory experience that feels like a nightmare you can’t quite explain, but absolutely feel.
The trailer also hints at deeper lore behind the doorway. Why did it appear? Who first discovered it? Are corporations, scientists, or other shadowy figures involved in exploring the Backrooms? Quick cuts suggest experiments, surveillance, and attempts to map or exploit this bizarre realm. That gives the film a sci-fi edge, mixing existential dread with speculative mystery. It’s not just about surviving the Backrooms—it may be about understanding what they are, and what it means if such a place exists alongside our reality.
For horror fans, Backrooms looks like the perfect convergence of internet-born mythology and prestige genre filmmaking. For A24 enthusiasts, it promises another bold, atmospheric entry into their expanding horror catalog. For anyone who’s ever been unsettled by empty malls, abandoned offices, or liminal spaces that feel “off,” this film has the potential to be uniquely disturbing in a way that lingers long after the credits roll.
The official trailer showcases just enough to spark theories and speculation without giving away key scares or the full structure of the story. That balance is crucial for a film like this—so much of the Backrooms’ power lies in the unknown, the unanswered questions, and the feeling that the space itself might go on forever. Expect fans to dissect every frame, looking for clues about entities, levels, and the rules of this reality-bending labyrinth.
As the release date approaches, Backrooms is shaping up to be essential viewing for anyone into horror, weird fiction, A24’s distinctive filmography, or viral internet legends making the jump to cinema. With Renate Reinsve leading a stacked cast, Kane Parsons bringing his original vision to a feature-length format, and A24 pushing for atmosphere and originality, this is one trailer you do not want to skip.
Stay tuned to BlueBoxNERD to get the latest from nerd culture.