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
Amazon.com: Gun Showdown - Sony PSP : Video Games
Retro Review - Gun: Showdown - BagoGames
Gun: Showdown review | GamesRadar+
Retro Review - Gun: Showdown - BagoGames
Amazon.com: Gun Showdown - Sony PSP : Video Games
MSNBC Hotlist ranks top 5 PSP games
GameSpy: Xiaolin Showdown - Page 2
Well I am now a member of the psp community now I just gotta track down UMD's for gun showdown, tony hawks project 8, driver 76 and liberty city stories! : r/PSP
Gun Showdown (USA) PSP ISO - CDRomance
Gun Showdown for PSP Reviews - Metacritic
Gun Showdown (USA) PSP ISO - CDRomance
GUN: Showdown | Eurogamer.net
PlayStation Portable / Useful Notes - TV Tropes
Gun Showdown Review - GameSpot
Gun Showdown for PSP Reviews - Metacritic
PSP Go launch adds 100+ games to PSN - GameSpot
Gun Showdown
GameSpy: NBA Street Showdown - Page 2
The 15 Best Open-World PSP Games Ever Made – FandomSpot