Concept: “A zine full of MÖRK BORG stuff. Most of it is created by our wonderful community and will be (or already is) made available for free download on morkborg.com, but there is also exclusive official material.”
Content: Generators for cults and curses, feats, 2 classes, black-powder weapons, 2 long adventures, a pair of 1-page dungeons, and a quartet of monsters/NPCs
Writing: Varies by author but consistently emphasizes images and concepts that are grim, creepy, and/or outright weird
Art/design: Every entry’s layout, graphic design, and coloration are distinct, creating a lot of visual diversity and easy navigability; sweet foil printing on the cover and first page; fold-out covers just to cram as much content into this zine as possible
Usability: The only obstacle is deciding what to read first.

Concept: “When it’s a choice between toiling for meager coppers and fighting for scraps with alley cats and shank-wielding orphans, it’s not even a choice. Not really.”
Content: A cosmetic redesign of the gutterborn scum core class
Writing: Clearly written and punctuated with humorous ability titles and asides
Art/design: Has a sneaky ratface just like Karl Druid
Usability: Plays like the gutterborn scum but with bigger ears

Concept: “Your soul may be screaming, but your throat sings sweetly.”
Content: A bard befitting Mörk Borg
Writing: Provides a vain, acquisitive characterization alongside brutal imagery and standard mechanics
Art/design: Illustration features three whole colors; a bit of a chromatic departure, but atmospheric and fitting
Usability: Definitely not your grandad's minstrel

Concept: “A scvmbirther (that’s a noun now) with *only* unofficial third party content!”
Content: Adds a slew of new options; under active development
Writing: As per individual scvm; clever reload button
Art/design: Atmospheric and unintrusive
Usability: Linear and clear; links to content docs and source materials

Concept: Supplemental character creation tables
Content: 47 additional character names, 14 "bags", 55 pieces of equipment, and 10 weapons
Writing: It has words. (They're pretty good ones.)
Art/design: Not elaborate; doesn’t need to be
Usability: As-is, will require a digital random number generator (or a small throwing knife)

Concept: Random character generator including exclusive content
Content: Includes all character options from the rulebook as well as exclusive content
Writing: Descriptions concisely characterize additional abilities
Art/design: Clean, clear, well-delineated presentation
Usability: MBC content can be toggled on/off; includes a print option to save your scvm

Concept: “A Compiled PDF of all Scvmbirther exclusive content with rules for using it at the table!”
Content: Additional class abilities for Fanged Deserter and Wretched Royalty as well as optional results for weapons, armor, gear, Terrible Traits, Broken Bodies, and Bad Habits rolls; includes directions for incorporating content into character creation
Writing: On par with the core book’s quality
Art/design: Primarily typographical, but choices make for easy reading and use
Usability: A minimally intrusive way to add new content to character generation  

Concept: “A collection of terrible traits, bad habits, and bodily features” (featured in Scvmbirther)
Content: Additional quirks and foibles to flesh out characters
Writing: Very aligned with Nilsson’s grit and wit
Art/design: Conservative but still thematically aligned; some clever use of sub/superscript
Usability: A handy supplement for a high-mortality game

Note: Published prior to release of formal third-party license; semi-semi-official-ish

Concept: “Another collection of terrible traits, bad habits, and bodily features” (featured in Scvmatorium)
Content: Even more quirks and foibles to flesh out (or in some cases de-flesh) characters
Writing: Just look at the title—how could this be bad?
Art/design: Conservative but includes characteristic elements like multiple typefaces and highlighting
Usability: Yet more options for players with perennially unlucky characters

Concept: “The forbidden books and scratchings of your study SCREAMthe indisputable truth.”
Content: An Esoteric Hermit but rounder
Writing: Seems vaguely familiar …
Art/design: Now with 100% more olifants
Usability: Beware pointy tusks and grabby nose

Concept: “D66 Items of Doom”
Content: Powerful magical items inspired by song titles
Writing: Frequently brutal, shocking, and visceral
Art/design: A labyrinth of horrors …
Usability:  … but in a good way

Concept: “AN UNENDING TIDE OF MONSTERS AND MISCREATIONS.”
Content: A digital adaptation of the monster generator from MBC: Feretory
Writing: Pelle’s gloriously weird sensibility in full effect
Art/design: Presented clearly and cleanly without sacrificing visual character; features a rather unpleasant egg
Usability: “Now, make a million monsters.”

Concept: “You have two accomplices who will never abandon you: YOUR TUSKS.”
Content: The Fanged Deserter with an alternative bite pattern
Writing: Reads exactly like Fanged Deserter because it’s the same damned class
Art/design: It has columns and pink and a walrus-man holding a crossbow
Usability: Exactly like Fanged Deserter because Karl Druid is a crazed, sadistic imp

Concept: “The world of people never much agreed with you; instead you sought the company of beasts” 
Content: A delusional zoologist.
Writing: A primitive class whose connection to animals is wildly open to interpretation.
Art/design: Cave illustration just adds further to the ambiguity to the story. 
Usability: Easy to use, flexible in characterization. Cover art by Nohr is available on Twitter.