I can also suggest related search terms for deeper research.
: Most "GTA 4 PSP" files found online are actually modified versions of GTA: Liberty City Stories or GTA: Vice City Stories . These mods often replace textures, character models (like adding Niko Bellic), and music to give the appearance of GTA 4. Psp Iso Club Gta 4
During the height of the PSP’s popularity, custom firmware (CFW) allowed players to run homebrew games and backed-up ISOs of their UMDs. This spawned massive online communities and forums—often referred to as "ISO Clubs"—where dedicated fans shared game rips, custom missions, and texture mods. I can also suggest related search terms for deeper research