This file holds the heavy assets. For a game as vast as San Andreas, the OBB is massive (often exceeding 2.5 GB). It contains the game world’s geometry (Los Santos, San Fierro, Las Venturas, and the countryside), character models, mission scripts, audio files (radio stations, dialogue, sound effects), and texture data. The term “opaque” means the file is a packed archive not meant to be read directly by the user—only the game engine, via the APK, can unpack and read it.
: Three distinct control schemes and adjustable graphic settings to optimize performance based on device power. Google Play 3. Stability and Known Issues Gta San Andreas 1.09 Apk Obb--
Android/obb/com.rockstargames.gtasa.