There are about two days left on the HârnWorld: Kingdom of Tharda campaign, and you can pick up the hardcovers for the published books here for the previous entries into the series (this is the 6th of 9 total).
I have heard a lot about this setting, and it has been around since the 1980s, so it has a long history in gaming. This is a High Middle Ages setting and is system agnostic, so it plays well with anything.
The writing, cartography, maps, and history are all best-in-gaming many say, so this looks interesting.
I backed this and look forward to seeing the world and the books.