Watchmen is a comic book limited series by the British creative team of writer Alan Moore, artist Dave Gibbons and colorist John Higgins. It was published monthly by DC Comics in 1986 and 1987 before being collected in a single-volume edition in 1987. Watchmen originated from a story proposal Moore submitted to DC featuring superhero characters that the company had acquired from Charlton Comics. As Moore's proposed story would have left many of the characters unusable for future stories, managing editor Dick Giordano convinced Moore to create original characters instead.

Watchmen: The End Is Nigh is an episodic video game series that serves as a prequel to the film adaptation of the DC Comics limited series Watchmen. The game was originally announced for release in downloadable installments on Microsoft Windows, PlayStation Network, and Xbox Live Arcade, with the first one released in March 2009 to coincide with the film's theatrical release. The second episode was released in July and August 2009.