Watchmen is a 2009 American superhero film based on the 1986–1987 DC Comics limited series of the same name co-created and illustrated by Dave Gibbons (with co-creator and author Alan Moore choosing to remain uncredited). Directed by Zack Snyder from a screenplay by David Hayter and Alex Tse, the film features Malin Åkerman, Billy Crudup, Matthew Goode, Carla Gugino, Jackie Earle Haley, Jeffrey Dean Morgan, and Patrick Wilson. A dark and dystopian deconstruction of the superhero genre, the film is set in an alternate history in the year 1985 at the height of the Cold War, as a group of mostly retired American superheroes investigate the murder of one of their own before uncovering an elaborate and deadly conspiracy, while their moral limitations are challenged by the complex nature of the circumstances.

For nearly two decades from October 1987 until October 2005, a live-action film adaptation of the Watchmen series became stranded in development hell. Producers Lawrence Gordon and Joel Silver began developing the project at 20th Century Fox, later moving it to Warner Bros. Pictures, the sister company of Watchmen publisher DC Comics, and hiring director Terry Gilliam, who eventually left the production and deemed the complex comic “unfilmable”. During the 2000s, Gordon and Lloyd Levin collaborated with Universal Pictures, Revolution Studios and Paramount Pictures to produce the film. Directors David Hayter, Darren Aronofsky, and Paul Greengrass were attached to the project before it was canceled over budget disputes. In October 2005, the project returned to Warner Bros., where Snyder was hired to direct. Paramount remained as its international distributor, whereas Warner Bros. would distribute the film in the United States. However, Fox sued Warner Bros. for copyright violation arising from Gordon’s failure to pay a buy-out in 1991, which enabled him to develop the film at the other studios. Fox and Warner Bros. settled this before the film’s release, with Fox receiving a portion of the gross. Principal photography began in Vancouver, in September 2007. As with his previous film 300 (2006), Snyder closely modeled his storyboards on the comic but chose not to shoot all of Watchmen using green screens and opted for real sets instead.