Is Red Dead Redemption on PSP? No—Platform History

No. Red Dead Redemption never released on PlayStation Portable.

Actual Release Timeline

• May 2010: PlayStation 3, Xbox 360
• Oct 2016: Xbox One backward compatibility
• Aug 2017: PS4 / PS5 via PlayStation Now streaming
• Aug 2023: Native PS4 & Nintendo Switch port (Red Dead Redemption + Undead Nightmare)

No PSP, PS Vita, or PC version exists (as of 2024). If you want portable Red Dead, the Switch version is your only official handheld option.