Concept: “A revolting slurry of disease and decay.”
Content: No explicit mechanics besides rolling, but plenty of scenery and potential for shenanigans
Writing: Full of grotesque, dark imagery punctuated by gallows (midden?) humor
Art/design: Typographical choices create lots of visual variety
Usability: Typographical and notation choices may also hinder quick reference, but they don’t substantially damage usability

Concept: “Obscene and revolting reasons to never take to the road”
Content: A host of horrifying, revolting, and/or pathetic new friends
Writing: Veritably dripping with gore, viscera, and tears of woe
Art/design: Typographical variation adds variety to the pages
Usability: An easy way to add a lot of grim atmosphere to any journey