I'm thinking of creating a saved game editor (yes, I know that there's at least 1 good one out there) but an editor that doesn't need the game running in the background.

I've tried viewing the saved game file (.fm file) in a text editor but it just displays gobbledegook. So my question is is there some sort of (.Net) API to query the file or is the file in some other format/language, i.e. xml?

If someone could point me in the right direction and give me a few pointers/tips it would be very much appreciated.