itch save location (Firefox):
C:\Users\[user account name]\AppData\Roaming\Macromedia\Flash Player\#SharedObjects\[RANDOM LETTERS]\commondatastorage.googleapis.com\itchio\upload2\game\[RANDOM LETTERS]
Local save location:
First narrow down the scope by going to this directory. **(See how to unhid AppData folder if you have it hidden: https://cybertext.wordpress.com/2012/05/29/cant-see-the-appdata-folder/)
C:\Users\[Your User Name]\AppData\Roaming\Macromedia\Flash Player\#SharedObjects\[Random Number]\localhost