The game is set in a place called the Ol' West, which was inhabited by robots. The main protagonist is a mechanical sheriff name Tin Star, who has a side kick name Mo Crash. In the beginning, Tin Star and Mo rode on a stagecoach to a town called East Driftwood to stop the Bad Oil Gang and their leader, Black Bart, from committing crimes. While riding on a stagecoach, a member of the Bad Oil Gang wearing spring shoes name Joe Twiddley saw them inside of the stagecoach and tried to attack them along with his gang, but Tin Star defeated them, and made it to East Driftwood safely. Upon their arrival, the story begins when Tin Star tried to help the old lady carry her bags, while she pushed him away from her and made him accidentally step on and broke a potted plant won by Tiny Johnson at a contest.
- Tin Star - The protagonist of the game. He loves to shoot and has no limit of bullets when it comes to his favorite pastime. He only takes his hat off on Sundays and has a book titled The Code of Good Guy Rules, which tells heroes to "never shoot women and children". When tired, Tin Star usually sleeps or takes coffee breaks.
- Aluminum - Tin Star's trusty steed. He is always ready when Tin Star calls him. This horse can outrun stampedes.
- Mo Crash - Tin Star's faithful sidekick and right-hand man. Mo often helps Tin Star when he needs to be steered in the right direction. His brother is Schemp, and the two of them have been fending ever since that extortion incident back when they were second graders in Elementary.
- Judge Soy Bean - The dignified mayor of East Driftwood. He is eloquent and always ready to give a speech. He has been trying to get the train to make stops at East Driftwood for a long time. He is the proud father of Maria, the belle of the town.
- Maria Bean - The virtuous daughter of Judge Soy Bean. She is in love with Tin Star, but he is much too busy dealing with outlaws to have time with her. No matter what trouble may befall Tin Star, Maria will stand by him because she knows "only a good guy could have a chin like Tin Star's".
- Undertaker - The town undertaker always has his tape measure handy. He's prepared for any incidents that might take place in and around East Driftwood. He'll be checking measurements after each players' run-ins with the Bad Oil Gang. He is only seen at the end of each stage, where he'll let players know how they did in each of their battles by awarding points. He also checks the damage they did in the town and other areas, and charges them accordingly.
- Tiny Johnson - The first of the Johnson brothers that Tin Star faced. The trouble all started with Tiny's prize geranium getting accidentally broken by Tin Star. He is not very quick on the draw, but he is very accurate.
- Bugsy J - The second Johnson brother Tin Star faced. As with many brothers, he tries to keep an eye on his younger siblings. He's out to take care of Tin Star for Tiny. Bugsy is an average gunfighter, but he likes to cheat.
- Lucky J - Another Johnson brother that challenges Tin Star to a Showdown. Lucky wants to average his two brothers and Tiny's geranium. Most of his reputation is based on his good luck instead of skill.
- The Kid Johnson - The last Johnson brother Tin Star faced. It is impossible for Tin Star to shoot him, because according to The Code of Good Guy Rules, heroes should "never shoot women and children", which The Kid Johnson is a child.
- Snake Oil - Another member of the Black Oil Gang that is not happy about what Tin Star did to Tiny's geranium. Snake Oil is a tough talker and a real quick draw, but he's not very accurate.
- Crude Oil - One of Black Bart's best gunfighters. In order for players to beat Crude Oil, they must have fast reflexes and pinpoint accuracy.
- Schemp Crash - Mo's big brother, and Black Bart's main henchman. Schemp says that he is the favorite of Mo Crash, but Mo is always ready to challenge that claim. Schemp and Mo never get tired of trying to insult and outdo each other.
- Black Bart - The leader of the Bad Oil Gang, as well as the main antagonist of the game. He tries anything to keep control of East Driftwood. Black Bart is not known for his good manners or his hygiene. His gang has a tough time just hanging out with him sometimes, especially when they are downwind. Black Bart likes to have members of the gang fight his battles for him, though he is one of the fastest guns in the Ol' West.
Tin Star was designed to be compatible not only with a standard Super NES controller, but also with the Super Scope and the SNES Mouse. The gameplay contains levels titled as "days". Each day is filled with four types of screens called "scenes".
- Training - Each day begins with a training session. Players can practice their gunslinging and try to rack up as much money as possible. Players can also test their aim by shooting the jugs on the screen. A jug will twirl up into the air when shot. As the jug comes down, players must shoot it again to "juggle" it and rack up loads of cash. A jug will break if it hits the bottom of the screen. The color of the jug also changes and will break when it becomes red for a while.
- Action - In this type of scene, players must fight their way through such scenes as cattle stampedes, a train, a bank robbery, barroom brawls, jail breaks, etc., while shooting the members of the Bad Oil Gang as they appear on the screen. Some Action screens are first-person viewed, while some are third-person viewed. If players let them stay on the screen too long, they will shoot Tin Star. Players can shoot canteens to restore health. Some targets can be shot for extra money. Some of the action screens will also have a boss at the end of each third-person viewed, Action screen.
- Showdown - At the end of each day, players usually have to face one member of the Bad Oil Gang in an old-fashioned quick draw gunfight. As players face down their adversary, they must watch for the "Draw" icon, which is shaped like the cylinder of a revolver, to appear. Players must quickly shoot the icon, and then shoot the opponent as fast as possible. Speed and accuracy are the most important in this scene.
- Bonus Screens - To access these, players should not shoot a single canteen. The bonus screen shows a woman spinning around on a round board with stars next to her body. Shooting the stars without missing and without accidentally shooting the woman will help players pick up large amounts of money. Bonus screens cannot be accessed after completing each Showdown screen.
- GameSpot - 7.1/10