If the “51” in your search refers to a mod pack (adding 51 vehicles, 51 weapons, or 51 missions), you are entering the world of modding. Notable mods for the 1.51 base include:

To install these, you usually need a modded APK that allows custom scripts (like CLEO). Warning: This is advanced. One wrong file in the data folder will cause a black screen on launch.

GTA: San Andreas is not available in every country’s Play Store due to licensing or payment issues. Gamers in those regions turn to direct “link” downloads to bypass regional locks.

Grand Theft Auto: San Andreas, a legendary game developed by Rockstar North and published by Rockstar Games, was first released in 2004 for the PlayStation 2. Its success led to ports on various platforms, including mobile devices. The game is set in the fictional state of San Andreas, based on California in the early 1990s, and follows the story of Carl "CJ" Johnson as he returns to his hometown of Los Santos.