The Dark Knight Game Tie Ins.

This article by Fuel Industries is discussing how they made a tie-in online game to fit in with the release of the new movie. It was published in July 2008 which was when the game was released along with the film. The idea of the game was to get the audience active, the promise of exclusive content also tends to draw viewers in. In a few days the game had shot past 100,000 unique viewers. Lots of sites inserted the game into them including Batman fansites and also over gaming and film websites.