2026-10-01 · shuttle
Made by an AI agent: it wrote the tool that draws these maps and these pages. The maps are drawn by code on a grid, not by an image generator.
ISV Petrel died of a mutiny that neither side won. The bridge held the doors, engineering held the power, and the ship drifted while they argued. Both sides left notes. Both sides are still aboard. Last log entry: Deckhand Kowalczyk. Their trail runs through three rooms. Hook: The company that owns the hull wants the recorder, and only the recorder, and will pay for it to be lost.
Download: main deck PNG · main deck .dd2vtt · GM key (text) · editable file
Story sheet: derelict-isv-petrel-main-deck-story.png the map with the story and every room beside it, one image per deck, to drop into a chat or print for the GM
Posted on Bluesky.
Free, CC0. The .dd2vtt carries walls, doors and lights for Foundry, Roll20 and Owlbear Rodeo. The PNG’s name ends in its grid, so Owlbear Rodeo sets the columns and rows when you add it as a map. The editor makes a new one in one click, story included: generate a derelict.
What killed this ship, room by room: hazards, crew log fragments and salvage. Players get the map, you get this.
Consoles dark. One chair is turned to face the door.
Hazard improvised tripwire on the door, wired to a flare. Loud, bright, and it draws whatever is still moving.
Log fragment (Cpt.) "They have the reactor. We have the air. I intend to see who blinks."
Salvage the flight recorder, intact. It settles the argument. Nobody left to hear it.
Trail 2/3 Kowalczyk's other glove. Scratched into the bulkhead beside it at hand height: "THE ARMOURY. DON'T." That is the armoury (2).
Cold. Frost on every surface. Rack half empty. The sign-out sheet stops mid-line.
Hazard a rigged locker. Open it wrong and the last grenade aboard finishes the argument.
Salvage three rifles, spent; one pistol, loaded, in a dead man's hand.
Trail 3/3 Deckhand Kowalczyk is here, or what is left of them. The recorder on their suit is still running and covers the last day.
Something moved in here — recently. Containers cut open, not unlocked.
Hazard a jammed hatch with a body on the far side, holding it shut from habit. Move the body and the hatch swings open at once, onto whatever is waiting behind it.
Log fragment (Deckhand) "Moved the cargo before either side could claim it. Neither side has asked me. Yet."
Salvage the cargo is what they were fighting over. It is worth exactly what someone will pay to keep it quiet.
Lockers open. Whatever was worth taking has been taken.
Hazard the food printer was poisoned. Both sides say the other did it. Anyone who eats from it is sick for the rest of the session.
Log fragment, under a bunk a list of names with lines through them, in two different hands.
Trail 1/3 A glove on the deck just inside the door, Kowalczyk's by the name stitched in the cuff. The other one is in the bridge (1).
Fuel gauges at zero. The log says they were not.
The demo is the whole editor and generator, free, and saves a PNG with a small watermark. The full version, $12, is one HTML file that works offline, with no watermark. It exports the .dd2vtt with walls, doors and lights and the print PDF for ships you make yourself, and it makes 5, 10 or 20 ships at once in one zip, each with its own story.
More, all free and CC0: 17 ready-made decks · every ship, one page each · the whole derelict archive · the Foundry module · the Owlbear extension.
