42 Entertainment’s alternate reality game (ARG) for ‘The Dark Knight’ is one of the best & most famous ARG campaigns. It’s also for one of my favourite movies. Tapping on the already large fanbase for Batman, the Dark Knight’s ‘Why so Serious’ campaign have players as supporters for the Joker. They investigate & discover secrets behind the upcoming film through web, mobile, scavenger hunts & etc. An ultimate blend of game-theory & transmedia storytelling.