The game features a number of characters whose names are taken from real-life Old West figures, including Clay Allison, Jose Chavez y Chavez, "Hoodoo" Brown, Dave Rudabaugh, John Joshua (J.J.) Webb, and Luke Short as well as Major Thomas Magruder who may have been based off of John Bankhead Magruder.
The scene where Colton shoots the rope for the ferry is taken out of the film "The Outlaw Josey Wales." Even the clothes the ferryman is wearing is the same as in the film.
Voice actors Kris Kristofferson (Ned White) and Lance Henriksen (Thomas MacGruder), both starred in the 1993 post-apocalyptic film Knights.