Concept: “Face off against interdimensional horrors, a drug-fueled cult and their terrifying god, and the unrelenting predation of the Mutant Centipede Thing!” 
Content: Three new ways to die... in a hole.
Writing: A sculptor's nightmare world of rock, lead, slag, bronze, drugs, and intelligent sinusoidal waves. Grounded and moving surrealism.
Art/design: Dark, textured, and occasionally effervescent images of spectral manifestations.
Usability: Deep vertical shafts with helpful mini-maps add utility and visual suspense.  

Concept: “The secluded mining town of Bereleah has been ground down by the exploitation of Thunder Trove Mining, its inhabitants grasping for survival at the treacherous edge...” 
Content: A company town atop a Black Rock pit of horrors. 6 locations, 6 side quests, 11 artifacts (14 if you count cursed ones), 7 NPCs, and 10 monsters.
Writing: A moral quagmire inspired by the complex relationships and power imbalances of mining communities.
Art/design: Coarse, gritty, and at times dark illustrations and isometric maps in a rich black and white format. Organized two-column layout.
Usability: Highly legible. Available as a soft cover or pdf.