Click on file name on left to download.
These files are provided by Wildtangent at their site as unlockable Demo files. The only reason you should need them is if you create a Mod and saved over some of the original file(s) without making your own backup previously. It is the official Wildtangent policy that they are the only ones who should offer any of the files, so your only option is to download new files from their site.
If you already have an unlocked version of the game, all you need do is re-install one of the appropriate 'demo' files on top of what you already have so it will replace any damaged files you currently have. There will be no need to reapply your unlock code or, for those who purchased a retail version, have one at all.
Fate (The Original)
Fate: Undiscovered Realms
Fate: The Traitor Soul