Concept: “You find a well equipped corpse along the side of the road. It has no face. When you examine it more closely it breathes to you ‘don't pretend that I'm not alive’... ‘Find the stone circle, stop the Baphomets before they kill us all’”
Content: A phantom limb crawl.
Writing: A story-driven dungeon crawl of possession, exorcism, maggots, entrails, rituals, and blood.
Art/design: Grisly isometric map enshrined in vinyl, gruesome cover, and a track listing of an adventure layout.
Usability: Easy to read, simple to navigate, trivial to compel your scvm with a good old-fashioned possession. 

Concept: “Enter as three and be free”
Content: A Norse myth puzzle crawl.
Writing: Encounters that heavily reference mythological events and figures.
Art/design: A map and protective ward.
Usability: More likely to confound the enemies of the Æsir.

Concept: “Rules inspired by the sanity or stress systems in various RPGs.”
Content: Words to lose hope by.
Writing: A fatal descent into bad habits and hopelessness. 
Art/design: Violent imagery and sharp design in stark red-and-white across a weeping void.
Usability: Simple and self-contained. Jagged font makes for a delicate read.