Saves & config
Sid Meier's Civilization VI Save File Location
Sid Meier's Civilization VI keeps its saved games in %USERPROFILE%\Documents\My Games\Sid Meier's Civilization VI\Saves\Single on Windows. Copy the whole folder to back a save up; paste it back to restore it.
Save games
1Windows
Multiplayer and hotseat saves are in sibling folders.
%APPDATA% style variables expand to your own account, and it works
even though AppData is hidden.
Backing a save up properly
Close the game first. A save folder copied while the game is running can catch a file mid-write, and the copy then loads as a corrupt save weeks later when you need it.
If the game uses Steam Cloud, close Steam entirely before restoring an old folder. Steam compares timestamps on launch and offers a choice between the local files and the ones on its servers; restoring while Steam is open often means the cloud copy quietly wins and the folder you just put back is overwritten.
Before you try a cheat
Back the save up first. Some codes on the Sid Meier's Civilization VI cheats page disable achievements for that save file, and a few cannot be reversed once used. A copy of the folder costs nothing and undoes all of it.
These paths are written by hand rather than imported, and a game update can move them. If one is wrong on your machine, tell us and it will be corrected.
Quick answers
Sid Meier's Civilization VI saves
Where are Sid Meier's Civilization VI save files stored?
%USERPROFILE%\Documents\My Games\Sid Meier's Civilization VI\Saves\Single. Paste that path into the address bar of File Explorer and it will open the folder — the environment variables in it expand to your own user folder.