This Script wil copy from every game folder the saves and copied them to a new folder in the root of the main directory. (you'll need all your games in the same folder though)
If your games are in c:\renpygames (c:\renpygames\game1, c:\renpygames\game2, etc)
you make a directory for example "_backup"
c:\renpygames\_backup
and edit the renpy-bckup.py to have your folder paths
alwayy use forward slashes even on windows -> /
when defining your path, the script will handle it ;)
it is intended to be OS independent thats why.
base_dir = "C:/_share/_game/VN/" # folder where your games are, change to your directory
backup_folder = "_backup" #backup folder !! NO SLASHES !! make shure it exists inside base_dir
run the script : python renpy-bckup.py
this wil make a new folder for every game inside _backup with the name of the game, inside there are the copies of all the saves for your save keeping
Example:
c:\renpygames\_backup\game1\save1.save
c:\renpygames\_backup\game2\save1.save
I'm not a programmer so it's far from perfect...but it does the job