Which groundbreaking literary product launch included an immersive real-world scavenger hunt across multiple cities, with augmented reality elements that brought the book's fictional world to life before publication?

The publishing industry has evolved dramatically in how new literary works are introduced to the public. Book launches have transformed from simple signings to elaborate experiential marketing events that engage readers in immersive ways. This poll tests your knowledge about innovative product launch strategies in the literary world that have redefined how authors and publishers connect with audiences and create memorable experiences around new releases.

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J.K. Rowling's 'The Casual Vacancy' (2012)
Dan Brown's 'The Da Vinci Code' (2003)
James Frey & Nils Johnson-Shelton's 'Endgame' series (2014)
Gillian Flynn's 'Gone Girl' (2012)