Yeah, I've never found a way to do this either without just backing up the whole folder manually at regular intervals.
As AGS seems to force saves even if you quit the editor or forcibly shut it down (in my experience, someone please correct me if I'm wrong on this one) then the only way I know of is to make sure you have backed up the game manually each time it works to your satisfaction...
For example: Just even for some MAGS projects I have about 15 complete backups of the entire game folder still on file...
I have seen some posts recently about how DropBox automatically creates archives or something, but I'm too old to trust all that newfangled stuff:
I go for a manual backup every time!
As AGS seems to force saves even if you quit the editor or forcibly shut it down (in my experience, someone please correct me if I'm wrong on this one) then the only way I know of is to make sure you have backed up the game manually each time it works to your satisfaction...
For example: Just even for some MAGS projects I have about 15 complete backups of the entire game folder still on file...
I have seen some posts recently about how DropBox automatically creates archives or something, but I'm too old to trust all that newfangled stuff:
I go for a manual backup every time!