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The best Atomic Monster horror films

James Wan's Atomic Monster is behind much of The Conjuring universe, plus Lights Out and M3GAN. Here's every Atomic Monster horror film on Scare Scale, scariest first. Unrated ones are waiting for your score.

Backrooms (2026) is number one on this list, with a Scare Scale score of 7.4 out of 10 from 3 ratings. It's followed by The Conjuring: Last Rites (2025) and Other Mommy (2026).

23 films · Average score 4.3 out of 10 from 6 rated films · Updated

Films in this list

Seen one of these and think it's in the wrong place? Open the film and add your rating. Every score here comes from people who've watched it.

About this list

What is the scariest Atomic Monster horror film?
Backrooms (2026) is number one on this list, with a Scare Scale score of 7.4 out of 10 from 3 ratings. It's followed by The Conjuring: Last Rites (2025) and Other Mommy (2026).
How is this list put together?
Released horror films from Atomic Monster, rated or not, ranked by overall Scare Scale score, highest first. Every score is the average of ratings from people who've watched the film, out of 10, and the list updates as new ratings come in.