Let the launcher handle the extraction and updates to ensure all your files are clean and functional.
This has led to one of the most searched queries in the gaming community: gta san andreas 500mb download pc
For a PC version that is still small-ish: Let the launcher handle the extraction and updates
The original of GTA San Andreas is about 4–5 GB after installation (1.5–2 GB compressed in setup files). So 500 MB means it's a heavily stripped-down version — likely missing radio stations, cutscenes, low-quality audio, or downgraded textures. or downgraded textures.