If you are playing the on PC, PS5, or Xbox Series X/S, the latest updates added key "Ultimate" features:
You can now immediately restart failed missions and pause during cutscenes. gta-san-andreas-ultimate-edition-new-version
For those building their own "Ultimate Edition" via mods on the original 1.0 PC version: If you are playing the on PC, PS5,
A new toggle in the graphics menu restores the original game’s warm, orange atmospheric glow. or Xbox Series X/S
Reintroduced volumetric clouds, original tire smoke colors (fixing the "black smoke" bug), and improved character animations for CJ.
Includes a GTA V-style controller layout and improved weapon/radio selection wheels. 2. Installation & Modding Guide