Nucleares

Nucleares

Released Mar 2023

Nuclear Reactor Simulator: Take Control. Prevent Disaster. Power the World.

84% positive · 1,171 reviews
Not yet
Released, but still in active development
High confidence
Active Development
Not yet
Released, but still in active development
High confidence
Active Development

Where to buy

Steam $11.24 $14.99 −25%
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Evaluation

Nucleares launched on March 13, 2023 and has been receiving consistent, substantial updates ever since. The developer has shipped at least four major content updates post-launch: the Chemical Treatment Module (April 30, 2024), a new Steam Turbine system (June 21, 2024), a Crane overhaul (April 11, 2025), and a dedicated Diesel Generator building (April 26, 2025). In addition, the game has received over 30 feature patches adding new systems, visual improvements, and gameplay mechanics throughout 2023–2026. On February 8, 2026, the developer posted a significant milestone note with version 2.0, describing the game as "fully modular" and stating explicitly that improvements are already in progress and that development would return to a weekly or biweekly cadence. This is a clear developer statement that active development is ongoing with no end in sight. A Cooperative Mode (Fusion 2.0) entered closed beta testing on January 2, 2026, and patch notes through May and June 2026 show continued work on integrating and improving this feature. The most recent patch was on June 7, 2026 — just over a week before today's date. Both released DLC items are cosmetic/content additions (Island Fauna on April 4, 2026; New Generator Set on May 25, 2024), with no unreleased DLC listed. The store description does not describe a live-service monetization model. The sustained pattern of major content additions and the developer's own words about ongoing plans make clear this game is still actively being developed and expanded.
Evidence
Most recent patch (V 2.2.25.217) adds new alarms, slider navigation, and further advances Cooperative Mode Fusion 2.0 implementation.
news post · Jun 7, 2026 source development ongoing
high
Developer announces version 2.0 milestone, states the game is now fully modular enabling future reactor models, and confirms improvements already in progress with a return to weekly/biweekly update cadence planned.
news post · Feb 8, 2026 source development ongoing
high

Content

3 of 3 released · no outstanding content
Released
Apr 2026

Media

Details

Publisher
MicroProse Software
Achievements
11
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player

About this 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.

Last evaluated Jun 15, 2026
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