The PSP homebrew scene was a wild west of unsigned code, custom firmware, and ISO loaders. Forums like QJ.net and PSP-Hacks were flooded with faked "GTA 3 PSP" screenshots.
The GTA III PSP port remains a significant case study for: gta 3 psp port
Between 2007 and 2012, the search for a "GTA 3 PSP ISO" was one of the biggest bait-and-switch traps in emulation history. The PSP homebrew scene was a wild west
The most infamous hoax was the "Rockstar Internal Leak" of 2009—a 4chan post claiming an ex-employee stole a debug build of GTA 3 for PSP. It included fabricated patch notes about reduced draw distance and compressed audio. The thread was deleted, but the myth persisted. The most infamous hoax was the "Rockstar Internal
Ironically, the best way to play a "GTA 3 PSP port" is to not use a PSP at all.
As of now, the unofficial port is playable but not perfect: