Watchmen: The End is Nigh is a "beat-em-up" style action game and prequel to the Watchmen feature film. The End is Nigh was originally released in two downloadable parts before being collected for this disc, so be aware that it is not a separate game (just a compilation with bonus features).
In the game, set several years before the events of the film (and the graphic novel it is based on), you play as either Nite Owl or Rorschach, two gritty superheroes that work together to fight criminals and other foes in a variety of locations, including a prison, sewers, a construction site, and a strip club. Between missions, the storyline (which includes political discussion and mentions of popular figures from the 1970s) is told via comic-like animated cut-scenes.