Which iconic literary marketing campaign was the first to use interactive elements and an internet puzzle that led to a real-world prize, revolutionizing book promotion in the digital age?

In the world of publishing, marketing campaigns can transform an unknown work into a cultural phenomenon. While great writing is essential, the way a book is presented to the public can determine its success. This trivia question explores one of the most innovative and influential marketing campaigns in literary history that forever changed how books are promoted and sold. Test your knowledge of the intersection between literature and advertising!

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The 'Da Vinci Code Quest' for Dan Brown's novel, which included online puzzles with a €100,000 prize
J.K. Rowling's 'Pottermore' launch campaign, which featured digital scavenger hunts for early access
Stephen King's 'The Plant' serialized e-book campaign with pay-what-you-want pricing
Suzanne Collins' 'Hunger Games' campaign featuring district-themed competitions across social media