Gun Showdown on PSP came out 4 years before RDR1, and it also nails the cowboy vibe, with such a small open world and janky controls. : r/reddeadredemption
Retro Review - Gun: Showdown - BagoGames
Gun Showdown
GUN: Showdown - PSP - #19. Clay Captured, Take Down Hoodoo [1/2] - YouTube
Buy the Gun Showdown - PSP | GoodwillFinds
Playzone Psp Gun Showdown | แฟนไทย
Gun Showdown - Sony PSP : Artist Not Provided: Amazon.de: Games