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A satirical nuclear reactor management game about profit, control and the art of the acceptable catastrophe.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
Official stores with direct support.
Mesozoikum: Reactor Civilization
Take control of an aging nuclear reactor in a world where profit matters more than safety
and statistics can always be adjusted.
CONTROLLED MELTDOWN is a satirical nuclear management game where you oversee every aspect of a power plant:
neutron density, temperature, cooling systems, power grids, personnel —
and most importantly, how the truth is handled when things go wrong.
A small mistake?
→ Incident.
Ignored warnings?
→ Partial meltdown.
A really bad day?
→ Build a sarcophagus.
As long as the money keeps flowing, everything is… acceptable.
Control rods, cooling loops, emergency power, venting & boric acid systems
Manual and automatic systems with real, cascading consequences
Balance stability, output and risk in real time
Respond to incidents, system failures and core meltdowns
Decide when to intervene — and when to let things escalate
Not every disaster ends the game… some are just accounted for
Safety vs. profit
Personnel vs. expenses
Honesty vs. trust
Every decision affects reactor stability, public perception and your final balance sheet.
Sarcastic awards for “successful” catastrophes
Absurd dialogue with safety regulators
A world where loyalty is praised and consequences are negotiable
Build fire brigades, generators, enrichment facilities and control rooms
Upgrade systems to prevent — or survive — failure
The reactor grows more complex… and more dangerous
Stable operation
Controlled catastrophe
Total systemic collapse
Golden Comrade Star
“Hero of the Controlled Catastrophe.”
Silver Comrade Star
“Profit Despite Fireball.”
Bronze Comrade Star
“Avoided Unnecessary Catastrophes.”
This game is satire.
All depicted disasters, decisions and systems are fictional.
Any resemblance to real-world events is purely coincidental.
Probably.
