As a gunslinger, it's your job to protect a bank from bandits while taking care not to shoot innocent customers. The bank has 12 doors in front of 12 teller windows, with only three doors visible at a time. Shooting is done simply by pressing one of the three buttons to shoot the left, middle or right door. The player can move his viewpoint left and right to reveal new doors. People only appear behind the doors that are currently visible on screen, except for the rare outlaws who will pop up to steal a cash deposit from a teller window the player isn't watching.
The indicators at the top of the screen show how much time it will take before someone will show up at a door. If a bandit appears behind a door, you have only a few seconds to shoot him before he shoots you. If you shoot him too early, it is considered unfair and gives very little score, but if you're too late, he'll shoot you and you lose one of your three lives.
Throughout the game, you will encounter various objects such as dynamite, customers, cowboys with hats, and people tied up with rope. Shooting these objects can reward you with gold coins, cash deposits, and score bonuses. However, be careful not to shoot innocent customers or miss an opportunity to eliminate a bandit, as this will result in losing a life.
is a challenging game that consists of more than ten rounds, each ending when all 12 doors have been cleared by someone throwing you a bag of gold coins. The rounds get increasingly difficult as the game progresses, with added obstacles such as bandits blocking your shot and time limits to complete each round.