There is no official version of Grand Theft Auto: San Andreas
Android Modifications: Files of this size are often menu or loading screen upgrades specifically for the Android version of the game, not a full PC executable.
About GTA San Andreas
The Verdict: The "50 MB Exclusive" is a myth, a clever ruse from the dial-up era. But for many gamers, that tiny, suspicious .exe file was their first step into the world of modding, file compression, and the realization that on a PC, anything is possible—even if it’s just a lie wrapped in a WinRAR archive.
Copyright Infringement: Downloading the game for free from unofficial sources is illegal and exposes your system to vulnerabilities that official manufacturer versions do not have. Official System Requirements (PC)