Which film's marketing campaign included a viral alternate reality game called 'Why So Serious?' featuring cryptic websites, real-world scavenger hunts, and even mock political campaigns?

The film industry spends billions on marketing campaigns, often with budgets rivaling the production costs themselves. From viral stunts to elaborate cross-promotions, studios employ innovative strategies to build anticipation and drive box office success. Test your knowledge about some of the most creative and successful marketing campaigns that helped transform films into cultural phenomena!

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The Dark Knight (2008)
Inception (2010)
Cloverfield (2008)
The Blair Witch Project (1999)