This is intended not only to show off various things that can be done with Fate Core. It's intended to happen with a specific structure - that typically found in the source material it emulates. It also may not be perfect, because I kind of rattled it off the top of my head in the space of a day or so. Either way, it should serve as a great starting point for anyone wanting to run a convention game, demo or other.
You can grab Xeno from this link: