"they come, they come"

Concept: “An endless invading horde of black metal-wearing fire creatures hellbent on death and destruction.”
Content: Includes a general scenario, potential outcomes, and stats for invaders and their monsters
Writing: Mörk Borg is generally pretty grim, but this is grim
Art/design: Clearly demarks textual sections with illustrations that convey the concept but leave plenty to the imagination
Usability: Usable? Yes. Survivable? Well …

Concept: “The PCs awaken to the sounds of thunder and screams. […] Can they escape the city before it crumbles in the inferno?”
Content: A map-based adventure to find the keys to the city gates; includes encounter and event tables as well as enemy stat blocks
Writing: Sets the scene and the stakes fairly concisely; other descriptions are tightly focused
Art/design: Intuitive layout with some stylized illustrations of enemies and NPCs
Usability: Provides some leeway for making forward progress or just punishing inept PCs

Concept: “There are 3 cultists among you. You have 24 hours.”
Content: A general scenario and 12 NPCs to do with as you will
Writing: Lean but colorful and evocative
Art/design: Almost entirely typographical, but leverages layered text as a visual figure of how the PCs’ work will ultimately be overwritten
Usability: Requires some elaboration from the GM, but the bones are there

Concept: “A fire-breathing, Colchis-complected horse homunculus; a flock of crows strung to it by a cacophony of clanging cables.”
Content: This composite monster doesn’t start fights but will most definitely end them
Writing: Some verse and a paragraph describing behavior; no stats other than damage
Art/design: An excellent illustration and color-coordinated text blocks
Usability: A strong motivator to resolve conflicts without violence

Concept: “The kingdom burns. A horde rises from the west to wipe away all. Your hated foes are vulnerable. Seize vengeance before the world is turned to ash!”
Content: 8 targets of revenge and a table of encounters to use when stalking them
Writing: Extremely entertaining
Art/design: Clean, easy-to-use layouts with some expressive artwork
Usability: Straightforward and full of humor; everyone needs a good laugh in the midst of the apocalypse

Concept: “A bitter army of basilisk children has formed and is marching from the Valley of the Unfortunate Undead.”
Content: A pair of complementary monsters and a table of demands
Writing: Creative with a dark tone punctuated by random weird humor
Art/design: A solid adaptation of the Mörk Borg aesthetic and style
Usability: The Dying Land needs more basilisks

Concept: “We must destroy the world before it can be taken from us.”
Content: An apocalyptic fire cult
Writing: Includes the heretical creed, stats for NPCs, and mechanics for gaining new adherents
Art/design: Color delineates descriptive from mechanical text and adds emphasis in the lore
Usability: A versatile, scalable supplement that can provide small encounters, recurring antagonists, and larger strife

Concept: “And Forth comes the fire on insectile wings.”
Content: A ruinous swarm of fire-starting vermin
Writing: Some short, prophetic flavor text and a stat block with special attention to igniting characters and items
Art/design: An intuitive layout with appropriate graphic and typographical character
Usability: Easily scaled to the GM’s desired level of challenge or catastrophe

Concept: “These ants are the size of human feet, and swarm at their targets with razor sharp mandibles, and fiery acid spit.”
Content: Delivers exactly what’s promised
Writing: One stat block for the entire swarm
Art/design: Orients the textual components around the central image
Usability: Some small text may be challenging to read, especially when printed

Currently unavailable

Concept: “A short supplement about fire”
Content: Rules for fire and its effects in combat (and afterward)
Writing: Concisely conveys the expanded mechanics
Art/design: Visually conveys the flame motif on every level
Usability: A handy reference for general use or in special situations

Concept: “From the craters crawl forth gigantic beasts of blazing, crackling stone forms.”
Content: The ribbon worm from hell (literally)
Writing: Blends descriptive and mechanical text in focused segments to facilitate usability
Art/design: Text is laid out to maximize readability against the hellscape background
Usability: As a game component, elaborate without being unnecessarily complex

Concept: “Surrounded by a haze of steam and heat wearing gleaming armor, the towering figure trudges forward, dragging a charred zweihander which cleaves the ground in twain.”
Content: The titular nemesis, ancillary fireflies, and a cursed sword
Writing: An even split between lore and stats blocks
Art/design: Graphic and typographic elements reinforce a knightly demeanor
Usability: More complex than average but fully manageable

Concept: “Beleaguering the remnants, lingering in the reeking hallucinogenic fumes, are beasts risen from the trails of the maggot-like horde.”
Content: Elaborates on the setup, provides stats for the beasts and mechanics for the fumes
Writing: Heavily suffused with esoteric and unsavory imagery
Art/design: Adds some visual character without obstructing comprehension or use
Usability: Fairly straightforward, but the beasts and fumes together are a double threat

Concept: “Whenever a fire is lite in the Dying World, there is a 1 in 6 chance that Gas-Folk is standing around nearby. This causes explosions.”
Content: An ambient entity that can mess up your day without doing anything
Writing: Concise and mainly focused on the explosions bit
Art/design: A variety of graphic choices and touches add lots of personality to a fairly linear layout
Usability: Includes a list of tell-tale signs that may alert canny PCs of the impending danger