About the Game
Welcome to Nuclear Reactor Simulator, where you step into the shoes of a nuclear power plant operator tasked with managing one of the most complex and dangerous systems on Earth. With the help of your AI-powered Operational Assistant (AO), you’ll navigate the intricacies of reactor mechanics, balance energy production, and prevent catastrophic failures.

This isn’t just a game—it’s a deep, immersive simulation that challenges your strategic thinking, problem-solving skills, and ability to stay calm under pressure. Whether you’re a seasoned simulation enthusiast or a curious newcomer, Nuclear Reactor Simulator offers a thrilling and educational experience like no other.
Key Features
Realistic Nuclear Reactor Operation
Control Every Aspect: Manage over 200 parameters and 150 switches across multiple reactor modules, including the Control Room, Containment Building, Turbine Building, and Cooling Towers.
Dynamic Systems: Monitor and adjust reactor power, coolant flow, steam generation, and more to maintain optimal performance.
Emergency Scenarios: Respond to unexpected events like equipment failures, floods, and fires with quick decision-making and precise actions.

AI-Powered Assistance
Operational Assistant (AO): Your AI companion helps with ignition protocols, alarm systems, and crisis management. Upgrade its skills to unlock advanced functionalities.
Remote Control: Use your tablet to manage reactor tasks, control AO, and oversee operations from anywhere in the plant.
Complex and Rewarding Gameplay
Daily Objectives: Meet energy production goals to earn Prestige and Experience Points. Level up to unlock more challenging scenarios.
Resource Management: Balance fuel consumption, maintenance costs, and community demands to keep your plant running efficiently.
Prestige System: Spend Prestige Points on upgrades, fuel blocks, protective gear, and even radioactive waste cleanup.

Advanced Reactor Mechanics
Enhanced Core Design: Operate a state-of-the-art reactor with nine fuel blocks, 72 control rods, and advanced safety systems.
Chemical Module: Dive into the chemistry of reactor operation with boric acid dosing, ion exchange filtration, and pH management.
Thermal and Steam Balance: Master the delicate equilibrium between steam generation, coolant flow, and energy output to avoid system failures.
Immersive Atmosphere
Realistic Soundtrack: Feel the tension and excitement of managing a nuclear power plant with an atmospheric soundtrack.
Detailed Environments: Explore every corner of your plant, from the Control Room to the underground maintenance tunnels.

What Makes This Game Unique?
Nuclear Reactor Simulator stands out with its unparalleled depth and realism. Unlike other simulation games, it doesn’t hold your hand with step-by-step tutorials. Instead, it empowers you to learn through experimentation, research, and community collaboration.
No Hand-Holding: Consult the in-game manual, research real-world reactor operations, or join the community to master the game’s mechanics.
Constantly Evolving: Regular updates introduce new features, improve realism, and refine gameplay based on player feedback.
Educational Value: Learn the science behind nuclear energy while having fun.
Why You’ll Love This Game
Thrilling Challenges: Every decision matters. Will you prioritize power output or safety? Can you handle the pressure of an emergency?
Endless Replayability: With dynamic systems, evolving challenges, and a community-driven learning curve, no two playthroughs are the same.
A True Simulator: This isn’t just a game—it’s a realistic, hands-on experience that will test your skills and keep you coming back for more.

Join the Community
Become part of a growing community of players who share tips, strategies, and stories of their reactor operations. Whether you’re looking for advice or want to show off your achievements, there’s a place for you in the Nuclear Reactor Simulator community.
Ready to Take Control?
Step into the Control Room, fire up the reactor, and see if you have what it takes to power the world—or risk a meltdown. Nuclear Reactor Simulator is waiting for you.

Screenshots
24 images
Version Information
Latest VersionLatest on Steam
Build 21912165
Released Feb 13, 2026
Current Release
21912165
Uploaded Mar 15, 2026
System Requirements
How to Install
Nucleares.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
6.4 GB
21912165
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Download Nucleares for PC with a direct link or via torrent. Get the full version of Nucleares for free. Nucleares is a Indie released by Iván Marcelo Pretti.