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Nucleares
Nuclear Reactor Simulator: Take Control. Prevent Disaster. Power the World.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.
What reviewers agree on
34 of the 71 reviews raise this.
6 of the 71 reviews raise this.
“This is a very good game I love that the devs are working on multiplayer so that we can blow up the plant with other friends that also have 1 braincell.”
4 of the 71 reviews raise this.
“Basically, 300 trillion buttons and switches, 1 person, no coffee to save your soul. Stuff dies and combusts at random, reactor hates you, everything hates you. One of the best reactor game I have ever played in my time…”
“Super difficult but something I can definitely see myself playing more to learn it. Super fun! Will be even better with co-op in the future!”
4 of the 71 reviews raise this.
“Incredibly in-depth. The community is growing all the time and the game is like no other for a real simulation experience. Manages to nonetheless remain super fun with the levelling up aspects nonetheless”
3 of the 71 reviews raise this.
“Purchased Friday night, 32hrs played by end of day sunday and I can't wait to get home and play more. Nuff said”
16 of the 71 reviews raise this · 12 of them still recommend the game.
“I think if this game had no tutorial it would probably be the exact same experience. It does the thing modern MMOs do: "Just click here, no need to know why, just know you clicked button, good job!" By the end of the…”
15 of the 71 reviews raise this · 6 of them still recommend the game.
12 of the 71 reviews raise this · 6 of them still recommend the game.
“Play Realistic Boiling Water Reactor in Roblox instead.”
“I don't recommend this game for an average player. It is not a game in fact, in my opinion. It is some kind of a trainer for non-existing PWR-like nuclear station. The problem with this game is too much "realism" in the…”
6 of the 71 reviews raise this · 1 of them still recommend the game.
“I think if this game had no tutorial it would probably be the exact same experience. It does the thing modern MMOs do: "Just click here, no need to know why, just know you clicked button, good job!" By the end of the…”
“I don't recommend this game for an average player. It is not a game in fact, in my opinion. It is some kind of a trainer for non-existing PWR-like nuclear station. The problem with this game is too much "realism" in the…”
4 of the 71 reviews raise this · 2 of them still recommend the game.
“I don't recommend this game for an average player. It is not a game in fact, in my opinion. It is some kind of a trainer for non-existing PWR-like nuclear station. The problem with this game is too much "realism" in the…”
“im lagging a lot. could we get this on geforce? :D”
“Mixed feelings - I really love the game, but the optimization is so poor. Running at ~20fps with these kind of graphics? Come on... Still having fun, so I'll give it a thumbs up”
Counted across 71 English reviews, sampled to match this game's 84.2% positive rating · as of 2026-05-13
“This game is an absolute joy. Coming from a guy that works as an operator at a real powerplant, this game checks every mark. If you dont have any experience with running or controlling powerplants, either in game or IRL. There is a bit of a learning curve. But let me tell you,…”
— a player, Steam review · 93 hrs played“I bought this game a while ago and it sat in my library and gathered dust. I finally decided to give it a go and man was I not prepared for what I was in for. Its a very detailed reactor management sim. There is very little documentation out there for this game, so you have to…”
— a player, Steam review · 13 hrs played“If you like simulation games and indefinite gameplay this title might be for you. Project is developed by one person and he is doing an amazing job. Patches still are deployed periodically, Developer is constantly bug-hunting and is open for community suggestions. Amazing,…”
— a player, Steam review · 139 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-05.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-25. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-10). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Patch notes: V 2.2.25.219
The following improvements and fixes were implemented: - Fixed a crash related to web server usage. - Fixed a bug that caused the wrong thumbnail to appear in the tablet’s inventory app. - Fixed a bug
Patch notes: V 2.2.25.218
The following improvements and fixes were implemented: - Fixed a bug in AO that sometimes prevented it from correctly recognizing when it was outdoors. - Fixed a bug in some tablet listings, where the
Patch notes: V 2.2.25.217
The following improvements and fixes were implemented: - Fixed an issue in the metrics app where data for the estimated demand and generated energy charts would sometimes not be displayed. - Fixed an
Patch notes: V 2.2.25.216
The following improvements and fixes were implemented: - Fixed an issue with the door detection system that did not work correctly if the player or AO entered the detection zone while the door was clo
Patch notes: V 2.2.25.215
The following improvements and fixes were implemented: - Fixed a visual issue in the control rod drive room that sometimes allowed the reactor vessel water to be visible. - Fixed a bug that prevents s
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Indie, Simulation |
| Player tags | Simulation · Realistic · First-Person · Experimental · FPS · Singleplayer · Indie · 3D · Strategy · Walking Simulator · Science · Immersive Sim (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Family Sharing |
| Languages | English * , Spanish - Latin America, German, Russian, Ukrainian * |
| Achievements | 11 |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS *: Windows 8 Processor: I5 Memory: 6 GB RAM Graphics: Intel UHD Graphics 620 DirectX: Version 9.0