I'm not comfortable with adding gentoo to the downloads page right now for two reasons:

* I'm completely ignorant of how the ebuild system works, so have no idea what to write in the blurb text.
* The ebuild isn't integrated with our deploy scripts which makes us dependant on a third party updating the repo. I'd rather we didn't advertise outdated builds on our main website in the event that @hasufell is on holiday or gets hit by a bus.

If someone could supply some blurb text that explains how to install playtest vs release, and explain why my second point is unfounded then I'd be all for adding it.