Multiple discs

I have decided that it would be best to release the game in pieces, sort of like having multiple discs. this way, i can get playable games out, while still working on the next "disc". i guess you could call them chapters really. The only issue with this would be the fact that you would have to copy the save file from one folder, and place it into the new folder for the new chapter. not sure how many chapters there will be. it seems like this will probably be necessary though, due to the fact that i have discovered there are size limits within the program i am using.