Most "50MB" files found online are either Graphics Mods (like ENB or 4K textures) that require the full game to be installed first, or Downloaders that will simply start a much larger download once opened.
Downloading "highly compressed" games from unofficial sources is a major security risk: GTA San Andreas - 460 MB Highly Compressed | By MEHRAJ
“Who is this?”
The highly compressed version of GTA San Andreas for Android, weighing in at just 50MB, offers a solution to this problem. This version of the game has been optimized and compressed to fit within a tiny fraction of its original size, making it accessible to a wider range of devices. The compression process involves optimizing the game's assets, such as textures and audio files, and streamlining the game's code to reduce its overall footprint.
"Highly compressed" versions often remove all radio stations, cutscenes, and high-res textures. Even then, they rarely drop below 400MB–600MB. 🛠️ Typical "Compressed" Versions If you see a 50MB link, it is likely one of the following: Graphics Mod Only changes the "look" of an already installed game. Safe (if from a trusted site) Menu/UI Mod Changes the loading screens or buttons. Safe Fake "Full Game"