A 100% save for this mod is different from standard San Andreas. It typically includes:
Often includes optimal settings for low-end PCs. How to Install Your Save Game gta underground 100 save game portable
As of the current modding landscape, GTA: Underground is considered a legacy mod. Development has largely stalled, and the community has fragmented. Dedicated searches on: A 100% save for this mod is different
Short example README (to include with a download) gta underground 100 save game portable