Horror Mystery Science Fiction

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Backrooms (2026)

Runtime 111 min

Release date 27/05/2026

Country United States of America, Canada

Production

Atomic Monster

21 Laps Entertainment

A24

Phobos

The North Road Company

Overview

A strange doorway appears in the basement of a furniture showroom.

Directors & Screenwriters

Kane Parsons

Director

Cast

Chiwetel Ejiofor

as Clark

Renate Reinsve

as Mary

Finn Bennett

as Bobby

Lukita Maxwell

as Kat

Mark Duplass

as Phil

Avan Jogia

as Naren Warne

Robert Bobroczkyi

as Pirate Clark

Ember Ambrose

as Young Mary

Krista Kosonen

as Nora

Philip Granger

as Meterman

Katharine Isabelle

as Robin

Peter New

as Big Wayne

Sarah Hayward

as Nurse

Natalie Moon

as Phil's Wife

Calix Fraser

as Phil's Child

Sawyer Fraser

as Phil's Child

Patrick Baynham

as Bearded Still Life

Rhiannon Roberts

as Redheaded Still Life

Dana Mahmood

as Archibald Leland Sutter Still Life

Matthew Patrick Savage

as Homeless Man

Ramona Kim

as Party Attendant Mother

Milana Wan

as Party Attendant Daughter

Kelly Craig

as Barbara

Mel Kostas

as Rival Customer

All trailers

Horror Mystery Science Fiction

Backrooms

Official Promo

Video: YouTube
Duration: 00:16

Horror Mystery Science Fiction

Backrooms

Official Promo

Video: YouTube
Duration: 01:07

Horror Mystery Science Fiction

Backrooms

Official Trailer

Video: YouTube
Duration: 02:18

Horror Mystery Science Fiction

Backrooms

Official Teaser

Video: YouTube
Duration: 01:01

Did You Know?

Backrooms, the creepy atmospheric horror film directed by Kane Parsons, will debut on HBO Max on September 25 after becoming one of the year's biggest surprise hits.

gizmodo.com

The uncanny horror hit “Backrooms” is scheduled to stream on HBO Max starting September 25, 2026.

boston.com

Image via collider.com,

The YouTube‑born horror that turned A24’s biggest box‑office win is finally streaming.

Kane Parsons’ Backrooms exploded onto the big screen this spring, turning a viral YouTube series into a $394 million global phenomenon. With a modest sub‑$10 million budget and an 87% Certified Fresh rating, the film eclipsed A24’s previous record‑breaker Marty Supreme to become the indie studio’s highest‑grossing release ever. The movie follows a struggling furniture store owner, Clark (Chiwetel Ejiofor), who discovers a portal to an endless maze of liminal spaces beneath his shop. When his therapist Mary (Renate Reinsve) realizes he’s vanished, she plunges into the same nightmarish corridors, racing against reality’s own memory glitches to rescue him. Supporting turns from Mark Duplass, Finn Bennett and Lukita Maxwell round out the psychological horror crafted by writer Will Soodik. After its theatrical run, Backrooms is set to debut on HBO Max on September 25, exactly four months after its cinema debut. The streaming launch caps a breakout year for YouTube‑originated horror, joining the likes of Markiplier’s Iron Lung and Curry Barker’s Obsession as proof that online creators can deliver both critical acclaim and blockbuster earnings.

collider.com