107 The Kingdom of Talingarde from The Way of the Wicked evil campaign by Gary McBride, Fire Mountain Games (2011). It is the noblest, most virtuous, and peaceful kingdom in history. The PCs will attempt to take it apart piece by piece and destroy it, in the name of Asmodeus.
Throne of Night, an unfinished adventure path (2013), by the same author, seems to take place in the same setting - although as it takes place almost entirely underground (in the Azathyr), it's difficult to be sure. The PCs are either Dwarves trying to find and restore their fallen kingdom, or Drow in another evil campaign, but this time in the underdark. In either case, allies must be found (or the weak conquered, depending on your party), and your fledgling kingdom expanded and defended as you explore and meet new underdark peoples. Both a normal campaign style and an evil campaign are supported.
Note: the author stopped communicating with his backers years ago, and seemed to drop off the face of the earth, never finishing the Throne of Night adventure path and never fulfilling his kickstarter obligations. Too bad, really - I was ready to purchase anything he put out for his underground Dwarf (or Drow) kingdom.