(As this is a short technical/legal paper, consult primary sources on software copyright law, PPSSPP documentation, and official game port technical notes for implementation specifics.)
If a file claims to be a full 3D open-world game under 200MB, it is 99.9% fake. The only exception are 2D retro games or very small indies. gta san andreas android highly compressed 50mb ppsspp
How these “50MB” packages are typically built (for context) (As this is a short technical/legal paper, consult
If you want to play San Andreas on your phone, you should use the dedicated rather than trying to emulate a non-existent PSP version: gta san andreas android highly compressed 50mb ppsspp
To understand why a 50MB file is suspicious, you have to look at the game's size: