Which horror film's marketing campaign created a fake documentary and missing persons website that was so convincing, many viewers believed the movie was actual recovered footage?

In the ever-evolving world of pop culture marketing, brands constantly compete to create campaigns that capture the public's attention and become part of the cultural conversation. Some advertising campaigns transcend their commercial purpose and become cultural phenomena themselves, generating memes, catchphrases, and massive earned media. Test your knowledge about one of the most innovative viral marketing campaigns that blurred the line between advertising and entertainment!

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The Blair Witch Project
Paranormal Activity
Cloverfield
The Ring