The game features Silas Greaves as protagonist, and most chapters are in the form of visualization of his recollection of events spanning from 1880 to 1910. As such, graphics are rendered in cartoonish-style.
Gunslinger features an XP and upgrade system. Also, concepts like Concentration Mode and some gameplay mechanics from previous generations are reused. New gameplay mechanic to dodge lethal bullet, known as Sense of Death, is presented.
The game also features Arcade Mode where the player can try to get the highest score as possible. Duel Mode is also included. The game also have "Nuggets of Truth" collectibles that provide factual information on the real-life characters, locations and events.
- Apache Territory
- Bull's Head Saloon
- Gold Rush
- Grand Valley
- Iron Springs
- Lincoln County
- Missouri Swamps
- Guadalupe Canyon
- Stinking Springs
Story mode difficulties
A total of 3 difficulties, namely "Normal", "Hard" and "True West", are available. "True West" is unlocked upon the first finish of the game. Difficulties mainly affect the health of Silas and his enemies. Plus, in True West mode, most HUDs including the crosshair are forced to off, the player can take much less damage, and VIP bosses are much more resilient.
Also after the first finish, a new mode called "New Game Plus" is unlocked. In this mode, all experiences points from previous finish are retained, allowing the player to achieve max level of 37 (XP capped at 600,000) and unlock all skills. Difficulty options are also given for New Game Plus.
Difficulties can be changed anytime in-game via settings.
Story Mode levels
Each episode pits Silas Greaves against a different gang of outlaws (with the exception of the Billy the Kid levels where he fights alongside the outlaws again townsfolk and deputies) based on real life historical figures from the wild west era. The title of each level is a reference to a western or spaghetti western movie.
- Episode I: Billy the Kid
- Once Upon a Time in Stinking Springs
- A Fistful of Hot Lead
- Episode II: The Cowboys
- A Bullet for the Old Man
- Gunfight at the Sawmill
- Episode III: The Innocents
- The Magnificent One
- Episode IV: John Wesley Hardin
- Be Quick or Be Dead
- Episode V: Grey Wolf
- Dances with Renegades
- Episode VI: The Dalton Brothers
- They Call Me Bounty Hunter
- Bounty Hunter is Still My Name
- Episode VII: The Wild Bunch
- Not so Great Train Robbery
- 1:30 to Hell
- Episode VIII: Jesse James
- Death Rides a Steel Stallion
- Without Forgiveness
- Episode VII: The Wild Bunch [Reprise]
- The Good, the Bad and the Dead
- Epilogue: Finale
- Silas Greaves
- Roscoe "Bob" Bryant
- Dwight D. Eisenhower
- Jim Reed
- Grey Wolf
- Johnny Ringo
- Jesse James
- Frank James
- John Wesley Hardin
- Billy the Kid
- Kid Curry
- George Curry
- Butch Cassidy
- Sundance Kid
- Curly Bill
- Pat Garrett
- Henry Plummer
- Bob Ollinger
- Old Man Clanton
- Emmet Dalton
- Bob Dalton
- Grat Dalton
- Minor Characters - A list of other, more minor characters in the game.
Possibly to address the issue of weapon homogeneity in previous generations, Gunslinger greatly reduced types of weapons available.
- Six-Shooter - balanced firepower, range, ammo cap and reload speed
- Quickshooter - fastest reload speed (refills a whole cylinder at a time) with limited firepower and range
- Ranger - best firepower and range for a pistol with lowest ammo reserve
- Rifle - accurate long-range weapon, can penetrate up to 2 enemies ("pair")
- Sawed-Off Rifle - the only ranged weapon with no legendary version available, mediocre in every way
- Sawed-Off Shotgun - one-handed shotgun that can be dual-wielded like pistols with a particular skill
- Shotgun - firepower reduces with range, can kill multiple targets due to spread ("sweep")
- Dynamite - Old West version of frag grenades, can be splitted into 3 with a particular skill
- Gatling Gun - used by several bosses, has unlimited ammo and will not overheat under player's control
- Tomahawk - Used by Indians as a melee weapon. Not usable by the player.
- Scoped Rifles - Used by Frank's bandits. Mentioned but not obtainable.
For a full list of secrets, see the Secrets article.
For a full list of achievements, see the Achievements/Trophies article.
- The events of the game span thirty years, the longest in the series.
- It is the only game in the series where the player does not visit locations from previous games.
- Newspapers can be found in various places. On closer inspection, they are the same newspapers found in Dead Island and Call of Juarez: The Cartel.
- A Wanted Poster on a bandit named Ramos is seen during the duel with John Wesley Hardin. The very poster appeared also in Call of Juarez: Bound in Blood.
- The first game in the series where the player does not have visible legs in first person (One screenshot supports the idea that Silas does have a first person model, but the black "widescreen bars" most likely hide it).
- Despite the title, the story has no direct involvement with The Treasure of Juarez. It is also the first game in the series in which the player does not physically visit Juarez, Mexico or the surrounding area.
- The first game in the series to feature only one playable character.
- It would appear that the developers intended to leave the factual basis of Silas' many stories up to the interpretation of the player.
- Concept art revealed that African-American characters were originally going to appear in the game.