The object in the game is to shoot outlaws in order to eradicate crime from a stereotypical Old West town. At the beginning of the game, three to five life units are available. In the arcade version, more can be purchased by inserting additional coins. Life units are also awarded based on how many points the player scores while playing the game. Every time the player is shot or an innocent townsperson or lawmen is shot, one life unit will be lost. (wikipedia.org)