Concept: “Have you ever wanted to be a wizard who did a few too many drugs?” 
Content: “THE DRUG WIZARD/THE SHROOM CASTER/THE ACIDLOCK”
Writing: Probably written while on a magic mushroom.
Art/design: A colorful introspective and psychedelic experience involving a pipe and a floppy wizard hat.
Usability: Please LARP responsibly. 

Concept: “The Omnivorous Slime Mold might start off as an innocent-looking mold, but if it's not kept in check, it will keep expanding, devouring everything in its path!”
Content: A voracious, amorphous devourer
Writing: Stat block and additional, relevant mechanics along with a paragraph discussing behavior and ecology
Art/design: Text arranged in the illustration’s void spaces to preserve readability without sacrificing visual character
Usability: Unrelenting and highly corrosive; may pose significant challenges for PCs

“Soporific ruler of moist patch of land in a forgotten corner of the world. Holds undying grudge against all of humanity. Calls his tiny warband to action at a moment’s notice.”

“This parasitic psychic fungus spreads through sight.”

Concept: “in this book you will find Seven Hells to inflict upon your players, and one Dead Paradise. Tie them all together with a Hellish table-crawl, the Eightfold Crypt of the King Orzog”
Content: Seven hells, a lost paradise, a tormented class, body parts, and a dread king’s crypt.
Writing: The history and cosmos of dead gods conveyed in 13 spreads worth of tables and dungeon.
Art/design: Excellent use of public domain imagery as inspiration for the various locals. Tortured sketches of divine punishment.
Usability: Enough material here to flesh out many settings. With an index to use them piecemeal or whole. 

Concept: “From north to south, barge pilots … carry mushrooms. Dense, heaping bargeloads of mushrooms.”
Content: An assortment of shrooms, variant Shroomic Powers (and consequences), rules for barge racing, rules of barge building, ready-made barges, and a barge-based class
Writing: Clear and easy to read prose with some obligatory conceptual weirdness
Art/design: Traditional layout and design with color, illustrations, and typographical variance lending visual variety
Usability: Simple in itself; an interesting way to lend some background color or focused variety to campaigns

Concept: “Young adults living in and near the village have disappeared.”
Content: An adventure in fungal infection
Writing: Presents rules and flavor for a skin-crawling ecology
Art/design: Diverse but unified; useful in navigating the document during play
Usability: Some ambiguity in the fungal infection rules but intent becomes clear

Concept: “You wander the world, gathering and consuming the sacred fungi.”
Content: A character whose foraged mushrooms grant special effects (but not always the ones you want)   
Writing: Mechanics-focused and efficiently so
Art/design: A variety of ’shrooms and an impressive ’stache
Usability: Probably safe for consumption

Concept: “Every aspirant is implanted with a sample of their patron and it strengthens their resolve, piety and wisdom.”
Content: Six quests for initiates seeking to prove their worth (willing or otherwise)
Writing: Provides lore and quest sketches; some are more absurd than others
Art/design: Easily readable body text with stylized headings; includes an illustration of a sample knight and one pretty sweet basilisk icon
Usability: GMs will have to supply knight stats and flesh out the quests

Concept: "As the world grows dark with Nechrubel’s influence... they farm the mushrooms, listen to the messages they give them, and wait." 
Content: A slick cavern complex full of apostates, visions, monsters, and spores.
Writing: Encounter structure that builds toward the insidious influence of the fungi and the waters on the cultists.
Art/design: Illustrations highlight a traditional text. Variety in typeface throughout. The contrast in type color creates visual breaks between room descriptions. 
Usability: Background, Map, Encounter, and NPC sections blocked. Adventure is best referenced in print. 

“The Mothershrooms are pale white fungi that grow in dark places. When picked up they bleed an intoxicating red substance used by the Sarkash druids to reach the metaphysical island of Venus Red. Here they learned how to uncover forgotten dark secrets, but initiates must find the path on their own risking their life.”

Concept: “Deep in the jungle, far from civilized lands, lies an ancient temple dedicated to a long forgotten god.” 
Content: A “4th level adventure” of alien gods, blood sacrifice, and ziggurats.
Writing: A heavy science fantasy/weird fiction setting with loose references to elements of Preclassic/Classic Mesoamerican civilization. 
Art/design: Dark and forbidding page illustrations of strange aliens and ancient machinery highlight an effective single-column layout.
Usability: Organized for reference over multiple sessions. Occasional generalized OSR rules reference.