The save file location depends entirely on which version of the Definitive Edition you own.
By keeping a master save file at 89% (right before the final mission "Keep Your Friends Close"), you can go back and clean up collectibles without redoing the entire drug empire. gta vice city definitive edition save game
The PC version offers the most flexibility for modding and save editing. If you have purchased the game via Steam or the Rockstar Games Launcher, you will find your saves here. The save file location depends entirely on which