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
Gun Showdown multiplayer details | GamesRadar+
20 fps is that bug? gun showdown psp : r/EmulationOnAndroid
GUN: Showdown - PSP - #19. Clay Captured, Take Down Hoodoo [1/2] - YouTube
Gun: Showdown cover or packaging material - MobyGames
Gun Showdown - IGN
Amazon.com: Gun Showdown - Sony PSP : Video Games
PPSSPP Reporting: Game
Gun Showdown (PSP) : Amazon.co.uk: PC & Video Games