Dark Knight - Viral Marketing Campaign

"Why So Serious?" was designed as a 360° alternate reality experience that played out over 15 months leading up to the release of The Dark Knight. Spilling out over a multitude of different platforms, this deep immersive campaign recruited the audience to become real citizens of Gotham City. Over 11 million unique participants in over 75 countries fueled the rise of the Joker as henchmen, campaigned for Harvey Dent to get elected as District Attorney, and even took the law into their own hands by becoming copycat Batman vigilantes. From calling phone numbers written in the sky, to hunting down GPS coordinates to find mobile phones baked inside of birthday cakes, "Why So Serious?" was an experience like no other. As these fans collectively scoured the globe in search of clues, their incredible passion generated billions of impressions in the press and blogosphere setting a new benchmark for immersive entertainment. (http://www.42entertainment.com/)