Unlike modern games that lock your save file to a cloud account (looking at you, Forza ), NFSU2 is from the Wild West era of PC gaming. Dropping a save file into My Documents\NFSU2 feels like hotwiring a car.
Press Win + R on your keyboard, type %LOCALAPPDATA% , and hit Enter. Nfsu2 100 Save File
Before pasting anything, your existing save folder. For example, rename SaveGame to SaveGame_Backup . If you don't do this, you will overwrite your own progress forever. Unlike modern games that lock your save file