‘Lights Out’ Showed How a Viral Horror Short Could Become a Studio Hit

David F. Sandberg’s Lights Out helped establish a path from viral online horror to studio success, a trajectory The Hollywood Reporter is revisiting alongside Obsession and Backrooms. The Swedish filmmaker’s short attracted attention through Reddit before becoming a New Line feature. Its transformation offers a concrete example of internet discovery translating into theatrical business.

The original short built its horror around an immediately understandable situation: a threatening figure visible when the lights are switched off. Released online in 2013, it starred Lotta Losten and ran approximately three minutes. That compact format allowed the central scare to work without an elaborate explanation or a lengthy introduction to its characters.

According to the account supplied by The Hollywood Reporter, a Reddit post helped propel the short to viral attention. The distinction matters because the film’s route to Hollywood involved both its availability on YouTube and its circulation elsewhere online. Posting the work made it accessible; sharing helped bring it to a wider audience.

Sandberg subsequently directed the feature adaptation, which Warner Bros. released in the United States in July 2016. New Line was among the production companies behind the film, with Eric Heisserer credited as its screenwriter. The adaptation retained the short’s central threat while expanding the premise into a story about a family confronting an entity associated with darkness.

The commercial results gave the transition significance beyond the filmmaker’s discovery story. Box Office Mojo records worldwide ticket sales of approximately $149.4 million, including $67.3 million domestically, against a listed production budget of $4.9 million. Those figures establish the scale of its theatrical performance, although box-office revenue is not the same as studio profit.

The short and the feature also served different purposes. The online film demonstrated a visual concept and Sandberg’s ability to execute a scare, while the theatrical version needed characters and a narrative capable of sustaining a longer running time. Its success therefore involved more than simply transferring an existing video to a larger screen.

Viewed as an industry example, Lights Out illustrates how a finished short can make an unfamiliar filmmaker’s approach visible to audiences and potential collaborators. Online attention can provide evidence that a premise connects with viewers, but it does not establish how a feature adaptation will perform. In this case, the eventual theatrical results supplied that separate test.

The Hollywood Reporter’s retrospective places Lights Out within a continuing discussion about horror’s passage from internet platforms to studio filmmaking. Its record provides a useful benchmark for evaluating subsequent adaptations, rather than a guarantee that the route can be repeated. The question for the next projects is whether their appeal can survive the same transition from an effective online experience to a sustained theatrical story.