Most RePacks keep the SAMP (San Andreas Multiplayer) exe intact. If you want to play online:
While there is no formal academic "paper" on a specific unofficial GTA San Andreas .7z RePack GTA San Andreas.7z RePack
The modding community for San Andreas is legendary. From graphical overhauls like "SAx Graphics" to total conversion mods like "GTA Underground," the modding scene is vibrant. However, many mods require version 1.0 of the game executable. The Steam version is often version 3.0, which is incompatible with many mods. RePacks almost always downgrade the executable to Version 1.0, making them the "Gold Standard" for modders. Most RePacks keep the SAMP (San Andreas Multiplayer)