Can't believe no one's posted that on here. The Fallout Equestria game by the Overmare studio is now renamed as Ashes of Equestria in order to ensure that the project will be finished without legal issues. The demo itself is pre-alpha wave 5 and includes a bunch of neato stuff, though unfortunately I can't run it on my crappy laptop

Anyways, the links are below if you're interested in awesome FoE Fan Games of massive quality:
Name Change Announcement
Wave 5 Demo

Enjoy!

Sweet!

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It runs pretty well, definitely better than previous versions!