Concept: “Established three generations ago by tax scofflaws from Schleswig, this mercantile utopia teeters on ruin”
Content: A three-act city crawl of procedurally crumbling districts and five dilapidated adventure sites. 
Writing: Moldering descriptions of urban decay blend with a malaise of frustration and angst to characterize the collapse of a culture fueled by greed.
Art/design: Haunting depictions of crumbling infrastructure and desperate souls contained in a dynamic and visually stimulating design.   
Usability: Accessible and easy-to-reference adventure design. 

Concept: “The cult dedicates the last of their wretched lives to procuring and using the luxurious bubble baths in this abyssal hellscape.”
Content: Tenets and random tables for those seeking to enjoy the Warm Embrace
Writing: As with any cult, alternatingly cheery and welcoming or seethingly malicious
Art/design: Primarily text with graphic elements to aid use
Usability: Faster than a real bath and almost as pleasant 

Concept: “Their husks litter the landscape, mountainous swirling shells that are all that remain of the titan snails. Now they serve as a refuge for the stray, the weary, and the weird - and as a lure for fools such as you”
Content: A massive slimy spiral snüngeon.
Writing: Captures the humble majesty of an extinct apex predator. 
Art/design: A comforting white and blue layout makes you want to slow down, grow some stalks, and savor the transformation.
Usability: Explore a snüngeon, make your own snüngeon, there are many titan snail shells left to explore. 

Concept: “Cleanliness is next to Basiliskliness”
Content: Mechanics for cleaning your scvm
Writing: Includes some helpful bits of advice for personal grooming and hygiene
Art/design: Features naked people—just like you when you use these rules
Usability: Delivered in shower curtain and towel form. Super-meta.

Photo by @graven_images, used with permission (encouragement, even)