
Nuclear Reactor Simulator: Take Control. Prevent Disaster. Power the World.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.29/day in the week to Aug 24 → 0.29/day in the week after.
Reviews, worldwide (the counter carries no country): 0.57/day in the week to Jul 20 → 0.5/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
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.
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.

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.
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.

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.
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.

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.
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.

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.
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.

Engagement
Reviews
Themes across 89 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
тяжело... ТЯЖЕЛОООООО........ жалко что мой IQ ровняется меньше чем у Ивана золо чтобы понять как работает АЭС
The ♥♥♥♥♥♥♥♥ retention tank is driving me mad! I ♥♥♥♥♥♥♥♥♥♥♥ the thing. It's forcing me to overproduce power by a factor of 3 to 4. I don't want to overproduce. I want to optimize! WTF is even in there? It's after the damn steam jet ejector. There should be the ♥♥♥♥♥♥♥ condenser there! If it's a buffer, why can't it be empty? Why does the damn electric vacuum pump need anything in there? Who the ♥♥♥♥ designed the power plant with the wrong steam jet injector size? Why can't we buy a correctly sized one for our load? Crazy? I was crazy once. They put me in a room. A rubber room. A rubber room with rats. They put me in a rubber room with rubber rats. Rubber rats? I hate rubber rats. They make me crazy. Crazy? I was crazy once. They put me in a room….
Media

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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Spanish - Latin America, German, Russian, Ukrainian*languages with full audio support
Hours played at review time, across 89 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
I am highkey a maximum level autist so the the blinking warning lights after changing parameters and flipping switches means Nucleares was manufactured specifically to activate every neuron in my monkey brain.
this game has so much potential but i have tried doing the tutorial over and over but its so bad and i barely learned anything if the tutorial was better this game would be soo much better
сразу понятно что игра узкопрофильная, и далеко не всем понравиться игра, но тем кому нравиться данная тематика, понравиться как минимум в силу того что игр в этом жанре не так много, те кто интересуется тематикой с радостью купят, другие просто обойдут стороной.
One of my fvaorite little games lately! You run a PWR Nuclear Reactor, and it's honestly not as hard as you think it is! If you're willing to spend about 10 hours learning the basics from nothing, you can run your own reactor too! A lot of this is pretty finely simulated, and though it is not perfect, it is by far the best thing you'd find in a video game for simulating a nuclear reactor, and it has a good gameplay loop to go around it! You're basically managing your power generation for the city, while also handling various other things such as maintenance and even extreme weather and failures if you allow those in the settings. There's even a DLC where there's wildlife around your plant, and well if things get radioactive, you can guess what happens to them. They have simulated systems too, with a simulated ecosystem though I don't know much about the simulation in that aspect of the game yet. Anyway tldr; make nuclear reactor make power make money don't go boom
У меня комп взорвался быстрее чем АЭС в Чернобыле
физека
Great! A labour of love by the developer. If you dreamed of running a nuclear power plant, this is it, it's technically deep enough to tick the right boxes but without being overly fussy that you require months and years of study. The Automated Operator that can help you run the plant is fantastic as you can get as much or as little help as you like. Just exploring the plant is fun too, you can go everwhere and interact with everything. Well done.
its such a ♥♥♥♥ game. you are thrown into this with no idea on what to do and even if you are a profesional, things will break and catch fire, there are no fire extinguishers or manual repairs. i definetly got scammed. DO NOT BUY
Players by region
Where this game's players are, estimated from review languages.
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