Which famous literary marketing campaign involved placing mysterious chalk symbols in cities across the US and UK, leading to an alternate reality game that revealed clues about the upcoming book?

The publishing industry has seen some revolutionary marketing campaigns that transformed books into cultural phenomena. From midnight release parties to elaborate transmedia storytelling, publishers have found innovative ways to capture readers' attention in an increasingly digital world. Test your knowledge about some of the most successful book marketing campaigns that changed how literature is promoted and consumed!

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The 'Lost Symbol' campaign for Dan Brown's novel, featuring cryptic Masonic symbols in major cities
The 'Night Circus' campaign, where performers in red scarves appeared in public spaces to promote Erin Morgenstern's debut novel
The 'Hunger Games' Capitol Tours, which created immersive district experiences in shopping malls
The '39 Clues' campaign by Scholastic, which integrated physical cards, online games, and book content into a transmedia treasure hunt