Batman: The Doom That Came to Gotham (2023) is an animated "Elseworlds" film that blends DC's Dark Knight with 1920s H.P. Lovecraft-inspired cosmic horror. Based on the Mike Mignola comic, the story features a reimagined Bruce Wayne battling supernatural entities and cultists in an atmospheric, adult-oriented mystery. For a legal viewing experience, the film is available through official channels such as Rotten Tomatoes .