A 2010 open-world Western action-adventure following former outlaw John Marston as he hunts his old gang across the fading American frontier.
- Developer: Rockstar San Diego
- Genre: Action-adventure, open world
- Platforms: PlayStation 3, Xbox 360 (2010); later PS4 via streaming/ports and Switch
- Mechanics: Dead Eye targeting, horseback travel, bounty/renown systems, random encounters, side activities (hunting, poker)
- Notable: Acclaimed narrative and atmosphere, influential open-world design, strong DLC (Undead Nightmare)