The PSP port of GTA 3 was developed by Rockstar Leeds, a studio within Rockstar Games, and published by Rockstar Games. The game was released on October 6, 2009, in North America, October 9, 2009, in Europe, and October 22, 2009, in Japan.
The PSP's 32MB of RAM (later 64MB) struggled with the "streaming" requirements of the original Liberty City map without the specialized optimizations built into the Stories games. How to Play Today Seen in Liberty City | GTA III on PSP (Literally) gta 3 psp port
The answer is a fascinating cocktail of technical limitations, corporate strategy, and a thriving homebrew scene that achieved what Rockstar Games never officially dared to attempt. The PSP port of GTA 3 was developed