Most downloads come in .7z or .zip format. Use an app like ZArchiver to extract the .iso file.

Some versions include "HD" texture packs that sharpen the look of the game on modern mobile screens. How to Play (Emulation Guide)

Often optimized to fit on standard Pro Duo sticks or SD cards.

The short answer is . Rockstar Games never officially released Grand Theft Auto: San Andreas for the PSP.

Creative developers in the emulation community have taken the engine of or GTA: Liberty City Stories and "skinned" it to look like San Andreas. These mods often include:

Seek out a reputable source for the modded file.

Open PPSSPP, locate your folder, and start the game. A Word of Caution

To run a GTA San Andreas modded ISO, you’ll need the right tools:

If you decide to download a modded ISO, here is what you can typically expect from the "best" versions:

This is the gold standard for PSP emulation.