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I'm looking for help as to how I add the save to the game, as I am stumped as of where to put it.

I have seen the post Derpius made, but the AppData folder doesn't seem to exist.

Any help would be appreciated :3

It's an hidden folder i believe. Look how to show hidden folder on your current version of Windows.

You also can open the folder by pressing "Windows + R", then type "%appdata%" and press enter. This will open a folder called "roaming" which is inside %appdata%