Pre-Order: CITADELL BORG: Golgoth-Koloss

This is a pre-order for a digital PDF. You are buying early access to CITADELL BORG: Golgoth-Koloss, a full Mörk Borg–compatible RPG.

The completed PDF is planned for release on 31 MARCH 2026. On release, itch.io will automatically add the download to your library and notify you by email.

The current pre-order includes:

• A living, work-in-progress PDF (updated as new sections are finalised).
• Art previews, maps, and layout samples.
• Designer notes, devlogs, and early-access updates.

Dates and details may shift slightly as the project develops, but the aim is a polished, fully-usable final release rather than a rushed one. If plans change significantly, pre-order customers will be updated via itch.io.

THE KOLOSS HUNGERS

Citadell Borg: The Koloss

A vertical corpse-city for Mörk Borg and other doomed games

The Koloss is a spire of rust and bone, a stacked necropolis of industry and faith. Its shadow cuts the scablands into jagged hours. Inside: resin-choked tombs, liturgical engines, and scavenger-cults chewing the last meat off a dying world.

Citadell Borg is a third-party, unofficial, fully-compatible Mörk Borg RPG. Drop this towering, industrial hell-prison into your Mörk Borg campaign, or crack it open and feed its pieces into any rules-light OSR-adjacent game.

THIS IS NOT A MERCIFUL PLACE

Inside the Spire

The Koloss is divided into nine distinct layers, each a complete adventure environment with its own factions, hazards, and secrets. Run them in order as a full campaign, or rip out individual layers for your existing world.

• Layer I – The Pilgrim’s Teeth: Wind-scoured ramps, hanging shrines, and the broken jaws of the outer gates.
• Layer II – The Red Maze: Stained corridors, butcher-priests, sluice-altars, and bone channels.
• Layer III – The Resin Tombs: Amber-still saints, preserved sinners, and captive liturgical engines.
• Layer IV – The Chain-Galleries: Suspended walkways, cargo-gantries, and dangling reliquaries swinging over the dark.
• Layer V – The Furnace Choirs: Heat-warped chapels, chanting stokers, and hymnals written in smoke and slag.
• Layer VI – The Scrap-Sanctorum: Scavenger-priests, reliquary junkyards, and shrines assembled from sacred refuse.
• Layer VII – The Wórm Catacombs: Twisting ossuaries, burrowing machine-wórms, and bone-tunnels that aren’t quite dead.
• Layer VIII – The Saint-Engines: Bound titans of metal and meat, wired into liturgical control-thrones.
• Layer IX – The Apex Reliquary: The highest sanctum, secret rites, royal dead, and the failing heart of the Koloss.

Each layer includes:

• Room-by-room keys with strong prompts, ready to run at the table.
• Factions and tensions that shift as the scvm interfere.
• Random tables for encounters, debris, rumours, and desperate locals.
• Hooks and escalations to drag the group up, down, or out into the scablands.

System & Format

• System: Written for Mörk Borg; easy to adapt to other rules-light / OSR games.
• Product Type: Digital PDF (this pre-order is for a downloadable file, NOT a physical book!).
• File Format: PDF (screen version and printer-friendly version).
• Estimated Page Count: ~192pp + cover on release.

LIGHT A CANDLE. BRING EXTRA FLESH.

[KOLOSS-SYSTEM] INITIALISING CITADELL_BORG.MODULE_01
[STATUS] STRUCTURAL INTEGRITY: 09/09 LAYERS ONLINE
[INPUT] > INSERT SCVM. PULL LEVER. AWAIT SCREAMS.

Credits

• Design & Writing: Mark Quire/Tesseract Engine
• Art & Layout: Mark Quire/Quire Graphics, Charles “Chip” Penumbra
• Editing: TBC
• Playtesting: In progress. YOUR NAME COULD BE HERE! Get in right at the start.

Developed at the table, tested on real scvm, and refined in the fumes of too many late-night sessions.

License & Third-Party Notice

Citadell Borg is an independent production by Tesseract Engine and is not affiliated with Ockult Örtmästare Games or Stockholm Kartell. It is published under the terms of the Mörk Borg Third Party License.

Mörk Borg is copyright Ockult Örtmästare Games and Stockholm Kartell.

Unless otherwise stated, text and original artwork in this product are © 2025 Mark Quire & Tesseract Engine. This pre-order is for a digital file only. You may not resell or redistribute this PDF or its contents except as allowed by fair use and the relevant license terms.

Follow the Collapse

For updates on Citadell Borg, future modules, and other doomed projects:

Website: https://tesseractengine.com/
• Social: Search Tesseract Engine on the socials. We're all over it.
• Mailing List / Newsletter: To come; mailto: office@quiregraphics.com in the interim

Devlogs on this itch.io page will track progress, show art previews, and reveal new layers of the Koloss as they are carved out of the corpse of the world.