That’s it! Your USB drive now contains a fully functional, portable GTA Underground installation with a 100% completed save game. Plug it into any Windows PC, navigate to the GTA San Andreas folder on the drive, and launch the game. You will have all your progress and mods ready to go, exactly as you left them.

For "portable" versions where you want the game and saves to live on the same USB drive or folder without relying on the Windows "Documents" folder, follow these steps:

GTA Underground is one of the most ambitious modifications for Grand Theft Auto: San Andreas . It bridges the gap between the 3D-era games, uniting Liberty City, Vice City, Bullworth, and San Andreas into one massive map, while adding vehicles and weapons from other Rockstar titles.

Use the airport terminals or the teleportation mods included in Underground to travel instantly between maps. Troubleshooting

Installing a 100% save game offers instant access to the best parts of the mod:

For the uninitiated, reaching 100% completion in GTA: San Andreas is a serious undertaking. It involves finishing all storyline missions, side missions, collectible hunts (like the 100 oysters or 50 snapshots), races, courier missions, and more. Now, multiply that effort several times over for GTA Underground . With multiple cities, each with its own set of missions, properties, and collectibles, achieving a 100% save file is a Herculean task.

Travel freely between Liberty City, Vice City, San Andreas, Carcer City, and Bullworth without triggering artificial restrictions or early-game search levels.

Always download save files from reputable sources. Files from unverified sites may contain viruses or corrupted data. Stick to the mod's official releases and well-known community hubs. For maximum safety, you can even create your own "portable" save by completing the game legitimately and backing up the resulting GTA Underground User Files folder to the cloud.