The actual GTA V game is over 60GB–100GB; it cannot be compressed to a few hundred megabytes while remaining the full game. Guide to Installing a Fan-Made GTA V Mod
: Download and install the PPSSPP - PSP emulator from the Google Play Store. Gta V Ppsspp Iso File 7z Download For Android
A file that is 1GB+ when extracted might only be 300MB–600MB in a 7z archive. The actual GTA V game is over 60GB–100GB;