Fission Cities: A NukePunk Chronicle

“The cooling towers are the most beautiful things ever built. Four hundred meters of engineered elegance, hyperboloid curves perfected by physics itself-every one of them a monument to the fact that the atom was tamed. The fact that the people who tamed it immediately used it to subjugate everyone else is, somehow, never mentioned in the tour brochure.”

• Smuggled memoir of a Rad-Zone archivist

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1. Setting Overview & Tone

High-Concept Pitch: The Fission Cities are the world that would have existed if the optimism of 1950s atomic futurism had curdled into authoritarianism instead of gradually collapsing under the weight of its own contradictions. This is a world of gorgeous, functional, deeply unjust nuclear civilization: reactor-powered Art Deco megacities of breathtaking engineering and comprehensive social control, surrounded by Rad-Zones where the expelled and excluded have built counter-cultures of fierce, irradiated ingenuity.

The tone balances retrofuturist wonder (this technology is real and staggering) with political horror (the people who control it will do anything to keep that control). Think Bioshock’s visual vocabulary applied to a nuclear rather than industrial capitalism, with the moral complexity of a Le Carré thriller and occasional pulpy radiation-powered action.

Sensory Pillars:

1. Sight: The omnipresent pale green glow of Cherenkov radiation from exposed reactor viewing pools in government buildings; Art Deco architecture with cooling tower aesthetics-curved lines, monumental scale, atom-symbol motifs inlaid in bronze on every civic building; the amber haze of the Rad-Zone horizon, where reactor exhaust plumes mix with atmospheric particulate; public Geiger counters every two blocks, their clicking pace providing the ambient rhythm of city life.
2. Sound: The Geiger counter’s clicking-slow and reassuring in shielded zones, increasingly rapid and urgent as you approach reactor districts or cross into the Rad-Zone; the subsonic throb of active reactor systems felt through the soles of the feet in Reactor Districts; propaganda broadcasts from atomic-powered radio towers delivering reassuring statistics about acceptable exposure levels.
3. Touch & Smell: The peculiar warmth of high-rad environments-not heat, exactly, but a body-level awareness of energetic particles; the metallic taste that comes before significant exposure; lead-lined coats have a distinctive softness and weight, almost like a blanket; Rad-Zone air smells of ozone, hot metal, and something organic that nobody has managed to successfully characterize.

The Core Tension: Control vs. Truth. The Supreme Administration controls all information about reactor safety, exposure statistics, and the actual state of every nuclear facility. The truth-that the experimental Nexus Reactors being quietly deployed are designed not for power generation but for a classified weapons application that will irradiate six cities-exists on a single analyst’s data card. Everything in the setting is a fight over whether that truth can be made public before it becomes irrelevant.

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2. Historical & Technical Context

In the Fission Cities timeline, the nuclear arms race of the mid-20th century led not to détente but to a Fission Compact-a 1962 agreement between major powers to jointly develop civilian nuclear infrastructure in exchange for a mutual nuclear weapons freeze. This compact succeeded technically while failing politically: the shared infrastructure became the basis for a Reactor State system, where national governments merged with their national atomic energy agencies. By 1990, every major nation was governed by its Reactor State hierarchy.

The Supreme Administration (SA) is the dominant Reactor State, controlling 60% of the world’s active civilian reactor network. It is headquartered in Nucleum, the world’s largest nuclear city-a place where the reactor is literally the city’s geographic and cultural center, visible from every district. SA governance is paternalistic, deeply sophisticated about public relations, and utterly ruthless about information control.

The Rad-Zone Communities are a direct product of SA policy: displaced populations from early reactor accidents, political dissidents, and anyone who scored too low on the SA’s Tolerance Aptitude Tests (a eugenics-adjacent sorting system that determines who gets premium housing far from radiation sources) were gradually pushed into increasingly compromised zones. Many have adapted genetically and culturally. Some have developed what SA scientists classify as “exposure-related anomalies”-abilities the SA refuses to acknowledge exist.

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3. Core Factions

The Supreme Administration (The State)

The governing nuclear authority. Extraordinarily capable of providing genuine material prosperity to citizens who comply and extraordinarily capable of making non-compliers disappear.

• Descriptor Examples:
  • “I work in the Nexus Reactor division. I have top-level clearance, a Crestline apartment, and a growing certainty that everyone above my clearance level knows something that they are not telling me.”
  • “SA Enforcement doesn’t arrest you. They reclassify your Tolerance Aptitude Score and recommend you for ‘remediation housing.’ In a Rad-Zone.”

The Rad-Zone Councils

Loose confederacies of Rad-Zone communities. Some are desperate. Some are thriving. All are fiercely protective of their autonomy.

• Descriptor Examples:
  • “We run our own micro-reactors down here. Salvaged from SA waste sites. They called those sites uninhabitable. We call them home.”
  • “Some of us glowed before the Rad-Zones. We just glow brighter now.”

The Isotope Underground

A network of SA defectors, journalists, scientists, and Rad-Zone guides dedicated to documenting the truth about nuclear policy. They have no unified leadership and are actively infiltrated by SA intelligence.

• Descriptor Examples:
  • “I publish a newsletter called the Half-Life Herald. It goes out to 400 people via dead-drop. The SA has tried to shut it down six times. They haven’t caught the printer yet.”

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4. Unique Mechanic: Radiation Exposure Track (RET)

Each character has a Tolerance Rating (1-6) and tracks Rad Points (RP).

Accumulating Rad Points:

• Each scene in a Rad Level environment: gain RP equal to the Rad Level.
• Using Hot-Shot techniques: gain +1 RP voluntarily.
• Shielded rest (8 hours in a protected zone): lose 1 RP.

Exposure Conditions (when RP exceeds Tolerance):

• +1 above Tolerance: Hot - Tingling skin, mild disorientation. No mechanical effect yet.
• +2: Flushed - +1d6 to Force and Finesse (radiation-boosted adrenaline) but -1 to Mind checks.
• +3: Burning - Severe exposure condition. -1d6 to all actions. Requires medical attention within one scene.
• +4+: Critical - Character must make a Severity check. Failure means an immediate Severe condition.

Hot-Shot Techniques (voluntary RP expenditure):

• Rad-Rush: Spend 1 RP. +1d6 to one Force or Finesse action. Causes the Hot condition if not already present.
• Glow Strike: Spend 2 RP. Melee attack deals a secondary radiation Condition to the target.
• Flush Surge: Spend 3 RP. Single spectacular action with +2d6. Immediately advance to Burning.

Rad-Zone Natives have Tolerance one step higher than normal and can use Hot-Shot techniques without advancing their Exposure Track once per scene.

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5. Character Archetypes

Archetype 1: The Isotope Analyst

• Concept: Former SA data analyst who stumbled onto the Nexus Reactor project’s classified files while running a routine audit. She copied what she found onto a shielded data card and walked out of SA headquarters for the last time. She has no combat training, no criminal network, and no plan beyond “tell someone who can do something with this.”
• Quote: “I am not a spy. I am not a hero. I am a person who knows something that is going to kill a lot of people if it doesn’t get out. That’s all. I just need to find someone who can help me figure out what to do with that.”
• Approach Distribution: Force 1 | Finesse 2 | Mind 3 | Presence 2

Archetype 2: The Rad-Zone Runner

• Concept: A Rad-Zone native who makes their living guiding outsiders through the irradiated territories between cities-for journalists, underground couriers, anyone who needs to move without SA checkpoints. Has a Tolerance Rating of 5 and treats Rad-Zones as comfortable home territory.
• Quote: “You want to get from Nucleum to the Eastern Reach without SA surveillance? That’s seventeen hours through the Zone. You’ll want to eat before we go-there’s nothing clean out there-and you’ll want to stop asking me if the glowing is normal. Yes. It’s normal. For me.”
• Approach Distribution: Force 2 | Finesse 3 | Mind 2 | Presence 1

Archetype 3: The Atomic Priest

• Concept: A reactor engineer who has spent thirty years maintaining civilian reactors and come to regard nuclear fission with something close to religious reverence-its power, its precision, its danger. Now retired, he cannot stand what the SA has done with the technology he gave his life to. Knows more about reactor engineering than anyone outside SA’s top clearance level.
• Quote: “Nuclear fission is not a tool. It is a covenant between human intelligence and the structure of matter itself. The SA broke that covenant. I intend to explain, very specifically, and with documentation, exactly how.”
• Approach Distribution: Force 1 | Finesse 1 | Mind 4 | Presence 2

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6. Condition Palette

Physical:

• Minor: Hot (elevated radiation, mild tingling), Filter Burn (respirator chafing).
• Moderate: Flushed (significant exposure, boosted but degrading), Particle Strike (radiation weapon hit).
• Severe: Burning (critical exposure, requires immediate treatment), Systemic Cascade (full body exposure event-life-threatening).

Social:

• Minor: Geiger Flagged (public counter logged your elevated reading).
• Moderate: Tolerance Reclassification (SA has downgraded your housing tier).
• Severe: Zone Reassignment (officially relocated to a Rad-Zone district).

Psychological:

• Minor: Counter Anxiety (the Geiger counters never stop and you’ve started hearing them in your sleep).
• Moderate: Reactor Dread (visceral fear of any nuclear facility regardless of current safety level).
• Severe: Nucleum Nihilism (genuine conviction that no outcome matters given the scale of what the SA controls).

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7. Starter Scenario: The Nexus Six

Framing: The analyst’s data card contains deployment schedules for six Nexus Reactors, each installed in a major Fission City within the past three months. The technical specifications suggest the reactors are configured in a network-not for distributed power generation but for a synchronized pulse capability. The Isotope Underground’s best nuclear scientist has 24 hours to analyze the specifications before SA Intelligence, who has identified the analyst, begins a systematic search of the city. The characters must protect the scientist, protect the analyst, get the analysis completed, and get it out through the Rad-Zone communication network before the SA finds them.

Antagonist: Commissioner Halvere Nacht - SA Intelligence Director. A profoundly pragmatic woman who believes the Nexus project represents genuine civilizational defense against an external threat she cannot discuss for legitimate security reasons. She is not wrong about the threat. She is absolutely wrong about the response being justified. She will catch the characters if they make a single significant mistake, and she will do so with regret.

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8. Why This Setting Matters

Nuclear power occupies a unique space in cultural imagination: simultaneously the technology most capable of ending human civilization and potentially most capable of sustainably powering it. NukePunk as a genre explores the political and social implications of a world where that technology became the foundational infrastructure rather than the feared weapon. Fission Cities specifically interrogates the relationship between energy infrastructure and state power-a question with immediate real-world relevance as nuclear energy debates resurface in global climate policy. The setting also explores the politics of expertise: when specialized technical knowledge becomes a prerequisite for political power, what becomes of democracy?