Nucleares

Take control. Prevent disaster. Power the world.

A deep nuclear reactor simulator where you operate a full power plant, balance energy output, and stay calm when systems fail.

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Every system answers to you

Nucleares puts you in charge of a complex facility: more than two hundred live parameters, one hundred fifty switches, and a reactor core built for serious operators.

0+ Parameters

Live systems to manage

0+ Switches

Hands-on plant controls

0 Fuel Blocks

Enhanced reactor core

0 Control Rods

Precision reactivity control

Master the plant under pressure

From ignition protocols to chemistry and prestige upgrades, every decision can keep the grid alive—or push the core past its limits.

Realistic Reactor Operation

Command every major plant system—from the control room to containment, turbines, and cooling towers.

  • Monitor and adjust reactor power, coolant flow, and steam generation in real time.
  • Respond to equipment failures, floods, and fires under pressure.
  • Balance thermal output without simplified shortcuts.
Reactor core and containment building interior

AI Operational Assistant

Work with AO, your AI companion for ignition protocols, alarms, and crisis management.

  • Upgrade AO skills to unlock advanced plant assistance.
  • Run remote tasks from your operator tablet anywhere in the facility.
  • Coordinate fuel loading, control rods, and maintenance workflows.
Operator tablet and remote plant controls

Advanced Core & Chemistry

Operate a nine-block core with seventy-two control rods, plus deep chemistry systems.

  • Fine-tune reactivity with boric acid dosing and filtration.
  • Manage ion exchange columns and coolant pH to prevent corrosion.
  • Account for xenon-135 and iodine-135 dynamics that reshape stability.
Chemical module and coolant chemistry interface

Objectives & Prestige

Meet daily energy goals, earn Prestige, and expand what your plant can handle.

  • Balance fuel use, maintenance costs, and rising community demand.
  • Spend Prestige on upgrades, fuel blocks, protective gear, and waste cleanup.
  • Level up into harder scenarios as your operator expertise grows.
Detailed reactor systems diagram and gauges

No Hand-Holding

Learn through the manual, experimentation, research, and community knowledge—not scripted tutorials.

Constantly Evolving

Regular updates deepen realism, refine systems, and expand reactor capabilities over time.

Educational Depth

Explore the science of nuclear energy while keeping a high-stakes plant online.

Learn with operators worldwide

Join the official Discord for tips and troubleshooting, and watch in-depth Nucleares guides from Leonidas Ares on YouTube.

Beginner Startup Guide — Nucleares

Leonidas Ares

Meeting City Power Demand — Nucleares

Leonidas Ares

Reactor Shutdown and Restart — Patch 203

Leonidas Ares

Step into the control room

Fire up the reactor, meet the grid demand, and see if you can keep the plant online. Nucleares is available now on Steam for $14.99. Steam reviews: Very Positive (84% of 1,092 reviews).

Buy Nucleares on Steam