GUN Showdown ROM Download - PlayStation Portable(PSP)
Gun Showdown for PSP Reviews - Metacritic
Gun Showdown multiplayer details | GamesRadar+
Gun: Showdown cover or packaging material - MobyGames
Retro Review - Gun: Showdown - BagoGames
Amazon.com: Gun Showdown - Sony PSP : Video Games
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