I had the Steam version of this game and was enjoying it when I ran into a game breaking bug. I can't find a fix for it but it was suggested to me that I buy the GoG version. I did, only to discover that, for some unknown reason, the GoG version uses a different type of save file. For example: in the Steam version, a save file name would be 1.PetroglyphFoCSave but the GoG version would be slot1.sav. Changing the file names manually didn't work so I'm hoping someone knows how to convert the files. I was well into the campaign and am NOT going to restart it just to potentially run into the same damn bug.