Once Upon a Time in Hollywood is a drama film, comedy film, alternate history, comedy drama, crime film, black comedy film, and alternate history film connected with United States and United Kingdom film history. The page is designed for quick discovery without repeating promotional copy or revealing plot turns.

Watchmen is a drama film, action film, superhero film, neo-noir, vigilante film, dystopian film, and alternate history film connected with United States film history. This guide focuses on confirmed credits and context, keeping the story overview spoiler-free.