Call of Juarez (formerly The Lawman) is a Western-themed first-person shooter from the Polish developer Techland. First released for Windows in E3 2005, it was ported to the Xbox 360 in 2007. The PC version is one of the first games to use Microsoft's DirectX 10. Its prequel Call of Juarez: Bound in Blood was released in 2009. A third game in the series, Call of Juarez: The Cartel was released in 2011.

A narrator tells the legend of the Gold of Juarez, which was allegedly meant as a ransom for Moctezuma, held hostage by conquistadores. The treasure was lost long ago and never found. Nevertheless, many daring souls have set out to retrieve the lost riches of the Aztec Empire, even though the treasure is rumored to be cursed.

Billy is a young man who doesn't know who his father is, and has no real last name. Due to the town's racism against his Mexican ancestry, during his childhood he suffered racial prejudice from the local population. He especially hated his stepfather Thomas, who beat him daily. Fed up, Billy left his hometown of Hope to go after the Gold of Juarez, but after two years of fruitless searching, he had found nothing, and eventually returns to Hope. However, upon his arrival, he finds his mother and Thomas dead, lying underneath the words "Call of Juarez" written in their blood. A man named Reverend Ray, a former outlaw, and Thomas' brother, sees Billy standing over his family, and assumes that Billy is the murderer. Billy flees from Ray and escapes, but Ray decides that it is his duty as God's emissary to track down and kill Billy for the crime.

William H. Bonney (born William Henry McCarty, Jr.) est. November 23, 1859 – c. July 14, 1881, better known as Billy the Kid but also known as Henry Antrim, was a 19th-century American gunman who participated in the Lincoln County War and became a frontier outlaw in the West. According to legend, he killed 21 men, but he is generally accepted to have killed between four and nine.

McCarty (or Bonney, the name he used at the height of his notoriety) was 5 feet 8 inches (173 cm) to 5 feet 9 inches (175 cm) tall with blue eyes, a smooth complexion, and prominent front teeth. He was said to be friendly and personable at times, and many recalled that he was as "lithe as a cat". Contemporaries described him as a "neat" dresser who favored an "unadorned Mexican sombrero". These qualities, along with his cunning and celebrated skill with firearms, contributed to his paradoxical image, as both a notorious outlaw and beloved folk hero.

Relatively unknown during most of his lifetime, Billy was catapulted into legend in 1881 when New Mexico's governor, Lew Wallace, placed a price on his head. In addition, the Las Vegas Gazette (Las Vegas, New Mexico) and the New York Sun carried stories about his exploits. Many other newspapers followed suit. After his death, several biographies were written that portrayed the Kid in varying lights.