Revolver: Vengeance on the Frontier; the third in a series of expansions for Revolver 1, gives both players the option of buying cards from a separate, neutral Frontier deck with dollar coin tokens earned during the main game. Many of these cards feature a choice of useful options. Others are threats which can be played by either player, such as "Old Three Toes", a monstrous grizzly bear that is particularly difficult to kill.

The expansion further elaborates on the new winning condition added for McReady in Revolver: Hunt the Man Down, and many of the cards are also useful to both players at the San Manzanillo prison location.