Which groundbreaking marketing campaign is credited with establishing the 'found footage' viral marketing approach that has since become an industry standard for horror films?

The film and television industry has pioneered some of the most innovative marketing campaigns in history, revolutionizing how entertainment products reach audiences. From viral mysteries to elaborate real-world experiences, studios have pushed the boundaries of conventional promotion. Test your knowledge of groundbreaking marketing strategies that changed how movies and TV shows connect with fans and created new industry standards.

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The Blair Witch Project's missing persons campaign with fake documentaries and websites claiming the footage was real
Paranormal Activity's 'Demand It' campaign allowing fans to vote for theatrical screenings in their cities
Cloverfield's mystery teaser trailer released without a title and ARG marketing elements
The Dark Knight's 'Why So Serious?' campaign with scavenger hunts and in-universe websites