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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. Data as of 2026-05-20.
“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“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 tutorial I still had zero clue where anything was. It would…”
— a player, Steam review · 13 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-24 01:06 UTC · history 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 2026-07-25.
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 (2026-07-24). 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 2026-05-20.
| 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 |
| Estimated owners | 20,000 – 50,000 (SteamSpy) |
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