The Lords of Underearth is a 1981 board game published by Metagaming Concepts as part of its MicroGame line.
The Lords of Underearth is a game of warfare in a subterranean labyrinth between orcs, dwarves, humans, and monsters.
[1] William A. Barton reviewed The Lords of Underearth in The Space Gamer No.
Fantasy veterans might find it an interesting diversion from their more complex endeavors as well.
"[2] In a retrospective review of The Lords of Underearth in Black Gate, John O'Neill said "This is a fully featured game that offers a range of solitaire and 2-player scenarios deep in the heart of an ancient Dwarven fortress… all in 14 pages of rules and a box that can fit in your pocket.