Halcyon: Campaign Codex + GM Kit

In the perfect city of Halcyon, they don’t kill the inconvenient people. They delete them: scrub the ID, void the record, erase them from the only systems that prove a person is real, until it’s like they never existed, and the happiness index ticks up another notch. The street calls it being made Quiet. Your players are the only ones who still remember the deleted.

The Premise

Halcyon is the safest, brightest, most optimized metropolis on Earth, run by a megacorp called Meridian that owns the city’s data, which means it owns your identity. And it stays perfect by quietly editing out the people who spoil the picture, one inconvenient soul at a time.

The players are fixers in the rain-neon undercity who do the job nobody official will: they find the deleted, keep an off-grid archive of the erased, and reconstruct the people the city scrubbed. The season opens when the fixer who trained them and built their archive is made Quiet for finding the pattern, and the cases that follow braid into Meridian’s “Civic Optimization” program and its architect, a director who sincerely believes a deletion isn’t murder but a mercy, an edit, an optimization. The crew comes to the only question Halcyon was built to never ask: what makes a person real, who gets to decide you never existed, and is the city brave enough to remember what it spent everything to forget?

It is cyberpunk noir with a human heart: high tech, low life, and a mystery solved by legwork and nerve, not the biggest gun, because you can’t shoot a cover-up and you can’t gun a deleted person back into existence.

What You Get

This is a complete, ready-to-run cyberpunk-noir campaign for any tabletop system, a full season bible you bring your own rules to:

• The full Campaign Codex: the megacity of Halcyon, the rules of a world where identity is data and erasure is a weapon, a season of five connected deletion cases (each a fair-play investigation), the full cast with GM-facing playbooks, seven mapped places, and a complete Running the Campaign toolkit (a city rumor table, mostly-non-combat encounter seeds, pacing notes, off-script responses, a pronunciation guide, and more).
• Print-ready player handouts (a deleted mentor’s hidden photo, a “no record” non-result, an internal optimization metric) and one-page NPC reference sheets.
• A 5-session GM Session Planner (print-ready).
• A 2-page Campaign Tracker for the powers of Halcyon, the case against Meridian as it builds, the deletions clock, the four hinge decisions, and the crew’s own rising heat.

Why It Runs Well at the Table

• A true, fair-play mystery: a deletion leaves a hole, and holes have shapes; your players reconstruct the truth from what the scrub couldn’t reach.
• A real villain who can’t be solved with a bullet: the optimizer is the architect to beat, but money buys every living voice, and only restoring the record beats the erasure.
• Five connected cases with a midpoint that turns the season and three true endings, including the hard one where the truth costs a whole city the perfect lie it loved.
• A cast built to ache: a fixer who keeps the city’s last memory on paper, a netrunner who reads data like weather, and a deleted mentor who left behind one photograph and seven dates.
• A clock your players can feel: the program never pauses; people are being made Quiet while the crew works.

System-Agnostic

No stat blocks, no rules, no math. Run it in any cyberpunk-capable or generic system you already own, or rules-light by tension alone. The chrome is kept narrative, not statted: netrunning is tense investigation, cyberware is character, and the only “magic” is the chillingly bureaucratic power to edit a person out of existence. An optional ruleset-neutral GM hook handles the tech.

Content Note

Mature cyberpunk themes: corporate murder by erasure, disappearance, the disposability of the poor, and the cold logic of “optimizing out” human beings. Dread and moral weight over gore, with violence consequential rather than gratuitous. The codex includes session-zero guidance and a safety tool recommendation. Best for tables who like their cyberpunk thoughtful and their noir with a conscience.

What’s Inside

• Campaign Codex (PDF, print-ready 8.5 x 11)
• GM Session Planner, 5-session pack (DOCX)
• GM Campaign Tracker, 2-page (DOCX)

Who This Is For

Game Masters who want a literate, character-driven cyberpunk-noir they can run with almost no prep, who like dread and moral weight more than firefights, and who love a city worth caring about and a buried truth worth digging up. A complete, self-contained season that also opens a series of Halcyon cases.

Want one case instead of a whole season? The standalone one-shot, Halcyon: Cyberpunk-Noir One-Shot, drops your players into the city for a single deletion and one night to find who erased a person before the trail is gone for good, and it is the opening of this very campaign.

License

For personal use at your table. Run it, print it, adapt it for your own games.

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