MESOZOIKUM

MESOZOIKUM

BlackMonkGaming · January 16, 2026 · Exploration, Action, Simulation, Life Sim, Adventure

Buy MESOZOIKUM from Steam at $4.99 — the cheapest of 1 store we compare.

PC
2 user reviews100% · 2
Best price
$4.99
lowest tracked $0.99
Steam Buy at Steam

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Where to buy MESOZOIKUM — official stores

Steam
Steam
Standard Edition · Steam
$4.99
Buy

MESOZOIKUM price by region

MESOZOIKUM costs $3.29 in Georgia (USD), £4.29 in the United Kingdom, $4.99 in the United States, €4.99 in Europe (EUR), CA$6.49 in Canada, NZ$7.39 in New Zealand, A$7.50 in Australia, R$16.99 in Brazil and zł22.99 in Poland right now.

Cheapest MESOZOIKUM offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $3.29 $3.29 — 1
United Kingdom £4.29 £4.29 — 1
United Statesyour region $4.99 $4.99 — 1
Europe (EUR) €4.99 €4.99 — 1
Canada CA$6.49 CA$6.49 — 1
New Zealand NZ$7.39 NZ$7.39 — 1
Australia A$7.50 A$7.50 — 1
Brazil R$16.99 R$16.99 — 1
Poland zł22.99 zł22.99 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About MESOZOIKUM

Mesozoikum: Reactor Civilization

Profit. Power. Consequences.

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.

☢️ Core Features

🔧 Deep Reactor Management

  • 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

🚨 Crisis & Disaster Handling

  • 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

🧠 Moral Choices Without Morality

  • Safety vs. profit
  • Personnel vs. expenses
  • Honesty vs. trust
Every decision affects reactor stability, public perception and your final balance sheet.

☭ Dark Humor & Political Satire

  • Sarcastic awards for “successful” catastrophes
  • Absurd dialogue with safety regulators
  • A world where loyalty is praised and consequences are negotiable

🏗️ Infrastructure & Expansion

  • Build fire brigades, generators, enrichment facilities and control rooms
  • Upgrade systems to prevent — or survive — failure
  • The reactor grows more complex… and more dangerous

🏁 Multiple Outcomes

  • Stable operation
  • Controlled catastrophe
  • Total systemic collapse

🏅 Awards

Golden Comrade Star
“Hero of the Controlled Catastrophe.”Silver Comrade Star
“Profit Despite Fireball.”Bronze Comrade Star
“Avoided Unnecessary Catastrophes.”

⚠️ Disclaimer

This game is satire.
All depicted disasters, decisions and systems are fictional.
Any resemblance to real-world events is purely coincidental.
Probably.

MESOZOIKUM — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Aug 15, 2026
Interesting idea and a very different experience from most management games. It took me a while to understand everything because the tutorial and UI need more work, but once I understood the reactor systems I started enjoying it much more. The concept has a lot of potential and I think with better tutorials, clearer UI, proper saving, and more polish this could become a really good game.
1 found this helpful
Recommended Jun 7, 2026
MESOZOIKUM is a management simulation developed and published by BlackMonkGaming that takes the often serious subject of nuclear energy and presents it through a lens of dark comedy, political satire, and strategic decision-making. Instead of simply challenging players to operate a reactor efficiently, the game constantly places them in situations where economic interests, public safety, and moral responsibility collide. This combination of detailed management mechanics and cynical humor creates an experience that is both entertaining and surprisingly thought-provoking. Players assume control of a nuclear power plant that has seen better days. The facility requires constant supervision, maintenance, and expansion if it is to remain profitable. At first, the task appears manageable. Monitor reactor output, keep systems stable, maintain infrastructure, and generate revenue. However, it quickly becomes clear that every choice carries consequences. Decisions that seem beneficial in the short term often create long-term risks, while investments in safety may protect the reactor but reduce profitability. The game excels at forcing players to navigate these competing priorities. The rea…
1 found this helpful

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