<game_name> is the defined in the game’s options.rpy (or gui.rpy ), not necessarily the displayed title.

Copy the entire <game_name> folder to back up all progress, settings, and unlocks. To restore, paste it back into the same location on the new system (same OS type is best).

renpy.save_directory("My Saves")

This write-up applies to standard Ren’Py 6/7/8 builds. Some commercial games may override these defaults.

The saves are located in your user Library folder.

This changes the folder inside RenPy/ . Avoid absolute paths for cross-platform compatibility.