Concept: “All Hail the Necrotoad, three hags terrorize the countryside from their mansion inside a giant undead toad... 

Fifteen Fungi on the Dead Man’s Chest, an alien fungus has infected a crew and their captain”
Content: A hopping toad crawl and a fungal-infested ship crawl. 
Writing: Background that establishes motivation and goals, practical advice on usage, and efficient summaries of fixed and random encounters.
Art/design: A gritty cartoonish illustration style with traditional block text layout aided by effective use of color and emphasis.
Usability: Consistent design choices make these larger dungeons easy to reference. 

Concept: “A collection of frog-based tropes”
Content: An encounter setting with stats for frog-men, special items, and a frog-man class
Writing: Straightforward in its descriptions and exposition of mechanics
Art/design: Relatively conservative but with plenty of color and character
Usability: More of a toolbox for the GM to use rather than a prefabbed adventure

Concept: “From the darkness, they emerged. Of the darkness, they are made.” 
Content: The aforementioned fiends and related diseases, parasites, and tables.
Writing: Themes of infection, subversion, and infestation tie this book of beasts.
Art/design: A mmutilated mashup of tortured illustrations in a stylized but effective layout.
Usability: Rules and description separated and identifiable for ease of reference. 

Concept: The title pretty much says it all
Content: A seriously ugly—and poisonous—toad
Writing: Minimal stats and concise special ability descriptions
Art/design: Seriously ugly toad
Usability: Good for a surprising but not probably not lethal encounter

Concept: “The unspeakable depravity of the way they dress... the unimaginable horror of their singing... only wretched SCVM would side with...”
Content: A FROGBORN
Writing: A refreshing quaff of bog water. *It’ll help clear out the sinuses. 
Art/design: Gritty bog background on neon green corpse painted frogborn.
Usability: Available in full color and plaintext versions. Metal growl at the start of each session for an extra omen.  

 

I love Willo. 

Concept: “Galgenbeck… crooked thieves, cruel knights, obsessed zealots, broken souls.

And then there are the monsters.”
Content: At least nine (but potentially fourteen) monsters.
Writing: Strangely folkloric, highly specific, and vicious absurdism in its ecology.
Art/design: A mixed media collection dominated by sharp high-contrast marker, each creature layout accommodating its illustration.
Usability: Short, legible, and humorously horrific. Deluxe edition contains all 14 monsters.

Concept: “These are the field notes of the famously reclusive Occult Herbmaster Garth Grimgar, found in the ruins of his hut years after his death.”
Content: An Herbmaster’s guide to 16 flora and fauna and their medicinal use.
Writing: Decoctions and their mechanics cleverly disguised as field observations.
Art/design: Weathered, hand-inked visual style achieves a found document aesthetic
Usability: Consistent and legible. Do not try these recipes at home. 

Concept: “It’s a simple agreement: You retrieve the artifact. Aalgut exacts his revenge … After that, the unbounded power of the Killing Crown is yours.”
Content: A dungeon crawl. Bufonic treasures. Murderous Crowns. Toadstools. Toads. Spells. Plague.
Writing: Strong and consistent theme and symbolism. Clear mechanics. Incorporates playing cards.
Art/design: Mörk Borg with toadstools (and toads).
Usability: Aesthetics complement the readability. A breeze to read and reference.

Concept: “Two spindly legs end in hooves that dredge through the muck. They buckle under the weight of 2000 teeth...” 
Content: Mol, a soul collecting dead frog on a human mandible grown to enormous proportions.
Writing: An Odd Wyzard did it, it’s their fault. Knowledge won’t save you from the teeth though.
Art/design: Mol before it got to 2000 teeth. A wittle baby abomination.
Usability: Available in a free and a paid version, which includes an unfortunate quest. 

Concept: “a class pack that adds six more Optional Classes to the dying world... including: Goblin Impostor, an enthusiast for costuming, shrieking, and knives…”
Content: Anthology of six absurdly comedic optional classes
Writing: Absolute hilarity delivered in an understated style. Memorable character concepts and mechanics.
Art/design: Tasteful public domain art with three tone coloring and a crisp traditional layout.
Usability: Table of contents for ease of reference and navigation.