These are often "PSP Mods" that use the engine of GTA: Vice City Stories but replace characters and vehicles with those from GTA 5.
Open PPSSPP, navigate to the folder where you extracted the file, and tap the GTA 5 icon to start. gta 5 ppsspp 24mb top
Use an app like ZArchiver to extract the .7z or .zip file. A 24MB file will usually expand to about 500MB–1GB after extraction. These are often "PSP Mods" that use the
To prevent lag, go to Settings > Graphics and set the Backend to "Vulkan" or "OpenGL" and "Frameskipping" to 1. Better Alternatives for Mobile gta 5 ppsspp 24mb top
Originally for PSP, this runs perfectly on the PPSSPP emulator and offers a similar vibe to the newer titles.