Many zip files found online are simply "skins." They take an existing PSP game (like Vice City Stories
Since no official source exists, files are often hosted on file-sharing sites (like MediaFire or Mega) where they may be bundled with adware or viruses. Incomplete Projects: Gta San Andreas Ppsspp Zip File Download
The most legitimate "downloads" are usually extensive mods of Liberty City Stories Vice City Stories . For example, projects like GTA: San Andreas Stories Many zip files found online are simply "skins