Backrooms | Official Trailer HD | A24

A24’s ‘Backrooms’ trailer dominates #2 with 7.9 million views and 410,000 likes, proving that a viral internet meme can translate into massive pre-release hype. At 50% higher view count than the average trailer on this list, it outperforms #1 Ella Langley’s video by over eight times in views. The eerie cinematography and A24’s proven horror pedigree drive this buzz, positioning the film as a potential box-office hit.