Dwarf Fortress PatreonTarn set up a Patreon for Dwarf Fortress, which is a great idea. Sometimes I forget to contribute as often as I intend to, so being able to do it monthly (and automatically) means I won't forget.
Dwarf Fortress, in my mind, is the most complex simulation ever created, and it's even more astonishing that Tarn and his brother Zach are the only two people involved.
They've been working on it since the beginning of time, and they will continue working on it until the end of time. I find that very comforting, somehow.
Here's the page: Bay 12 Games Patreon.