Concept: “What is left of your humanity is pervaded by the tides and the salt-soaked waters that you now call your home.”
Content: A character class adapted to aquatic environs
Writing: Class options provide mechanics, color, and some humor
Art/design: Illustration helps to visualize the characteristic transformations
Usability: Aquatically oriented but usable in landlocked situations as well

Concept: “Of inscrutable origin and of unfathomable power, your chassis absorbs the blood of the living.”
Content: A blood-drinking robotic scvm.
Writing: Mechanically precise though not as soulless and inflexible as its titular subject.
Art/design: Superior in design, though not of machine precision. With a menacing full-color character illustration.
Usability: Ready to rip and tear. 

Concept: “Picked up any silver? Good for you, NOW ROLL A D20!!!” 
Content: Like normal silver, but probably fvcked.
Writing: Seven shiny new miseries* for those greedy scvm.
Art/design: Cursed silver coins fall, casting angled shadows across a plastered page. 
Usability: *Not “Miseries” in that sense. That fate is sealed.  

Concept: “Forever the hunter, never the prey.”
Content: A macabre archery-based class
Writing: Conveys the character’s desperate upbringing and grim outlook
Art/design: Laid out for easy reading with expressive typefaces, illustrations of arcane arrow types, and purple accents to unify the text and images
Usability: A daily mix of arcane arrow effects make a constantly varying ability set

Concept: “What happens when the lore of our world collides with the Dying World of MÖRK BORG?”
Content: The second volume of collected FÖLK-LORE Jam entries
Writing: Varies by author, see individual entries under the FÖLK-LORE Jam tag
Art/design: Varies by entry; single-page entries are well balanced in spreads
Usability: Varies by entry, but it’s all Mörk Borg—how tough could it be?

Concept: “A tiny system for MÖRK BORG when rolling 4:3.”
Content: A blank map of the Dying Land to track the progress of the prophesied fires
Writing: Includes instructions for use and a dire warning
Art/design: Elegant and visually engaging in its contrasting aspects
Usability: A clever material (rather than mechanical) tool

“The characters venture into the depths of the venerable Manor, attempt to steal treasure, uncover its dark secrets, and kill a lot of monkeys along the way.”

Concept: “A quarterly publication that focuses its cyclopean gaze on a single system with every issue”
Content: “A journey through dilapidated townsteads, rejuvenated fields and terrifying dungeons, with all the horrors you meet along the way”
Writing: The pedagogy of planting and population planning, and a forgotten temple to begotten basilisks, all aggressively annotated. 
Art/design: Darkly grotesque cultists, disturbed floral prints, cultured public domain illustrations, and colorful marginalia highlight the body text.
Usability: Organized, aside from a few intentionally frustrating almanac charts. But I’m sure you can manage those with a little old-fashioned spit and polish.

Concept: “An egg hunt riddled with danger and reward!”
Content: Lore, NPCs, items, and schedule for a high-stakes scavenger hunt in the Dying Land
Writing: A balance of lore and mechanics with lots of character folded into both
Art/design: Laid out for easy reference, with graphic elements that add strange, supernatural character
Usability: A straightforward toolkit for a grimly humorous adventure

Concept: “The Abominable Bone Pit … appears throughout the lands seemingly at random but with singular purpose – to swell the ever-growing pile of material needed to fuel its unending tide of cursed creations.”
Content: A monster generator with tables for legs, heads, powers, attacks, and tactics
Writing: Adds style and personality to the mechanics
Art/design: Appropriately frames the text against a trippy red-and-black ground
Usability: Uses an assortment of dice, which you probably already have

Concept: “27 pieces exhumed from the depths of lavish graves, themed around skeletons, bones and skulls.”
Content: “Classes, items, companions, monsters and encounters created by sacrilegious mind.”
Writing: A variety of styles, all appropriate to their content
Art/design: Worth downloading just to check out the range of art and layouts
Usability: Complexity varies by entry but consistently easy to use

Concept: “A collection of 17 spells to unleash in MÖRK BORG!”
Content: 8 unclean and sacred scrolls apiece, plus the more elaborate Cascading Rebirth
Writing: Concise spell descriptions and creature stat blocks
Art/design: Slick, monochrome Mörk Borginess
Usability: Readable and straightforward