Warlord Games has their new Wild West Chronicles gamebook available over in their webshop, partner.
Sam Elliot voice not included.
From the release:
New from the designers of the highly popular Operation Squad rule system, we now have Wild West Chronicles – wargames rules for reliving Gunfights in the Old West!
This easy-to-learn and intuitive game system will soon have you staging gunfights between Outlaws, raids along the Mexican border, Indian ambushes and many other situations that are so typical of the Far West!
These rules include army lists for Desperados, Texas Rangers, Lawmen, Outlaws, Townspeople and Indians. Each model has a points value that depends on his skills and weaponry so you can create well-balanced scenarios that all the players can enjoy. The use of tables has been reduced to a minimum and the whole system revolves around the addition and subtraction of six-sided dice. There are three standard scenarios inside: the Gunfight, the Rescue and the Ambush!
There is also a simple system to help you track the Experience of your force from one gunfight to another. If you enjoy the Wild West setting then this game is one you can’t ignore!