Call of Juarez is an epic adventure western themed FPS game. The game features fast paced revolver duels using historically accurate firearms, horseback riding, mounted combat and stealth actions in memorable locations set after Western movies. Emergent gameplay based on accurate simulation of not only rigid bodies and rag-dolls but also liquids, gases, fire and smoke makes the gameplay innovative and non-linear.The plot exploits emotional and psychological aspect of the link between the two main characters, runaway agile and smart Billy who tends to avoid direct combat and Reverend Ray - strong and ruthless gunman bringing God's Justice to lawless and brutal world of 19th century's USA and Mexico borderland.