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Rasvyat Nuclear Power Station

Rasvyat Nuclear Power Station

A co-op RBMK reactor simulator, with a detailed control room, realistic physics and authentic sound design

Released Jul 17, 2024 Developer Thxtnt Platforms Windows CasualSimulationSandbox3DEarly Access
View on Steam ↗ $9.99 (US · as of 2026-05-18)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

80.0%positive185 reviews
Recommended · 0 found this helpful

“Very realistic and comprehensive. 100% recommend for people into RBMK/BWRS or even just nuclear reactors in general.”

— a player, Steam review · 5 hrs played
Recommended · 0 found this helpful

“Good game with active developer, but updates take too long.”

— a player, Steam review · 35 hrs played
Recommended · 0 found this helpful

“Симулятор аварийных остановок и сирены”

— a player, Steam review · 4 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

7achievements
14.5%median completion
3.0%rarest: 3 Days Without Accident
80.0% of players 46.6% of players 28.6% of players 14.5% of players 6.4% of players 5.4% of players 3.0% of players 80.0% 0% most earned rarest
Almost everyone has
80.0%One of many — Initiate an emergency shutdown using the AZ-5 button
46.6%"I know what I'm doing I swear" — Raise power too quickly causing a shutdown
28.6%Now what? — Reach 3200MWt for the first time
Rarest badges of honor
3.0%3 Days Without Accident — Operate the reactor between 2000 and 3250 MWt for 3 hours
5.4%1 Day Without Accident — Operate the reactor between 2000 and 3250 MWt for 1 hour
6.4%On April the 26th.. — Hidden achievement

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 19, 2026
1.0.3 Public Test Build Revision 2

Hello! Only around a day since the release of this test build and I've gotten some amazing feedback. Due to this, I've managed to put together some small changes and bug fixes that should make the upd

Jun 18, 2026
Rasvyat 1.0.3 Public Test Build is live

Hello! The 1.0.3 public test build is now available via the Steam "betas" tab and will continue to be available over the next few weeks, all the while I will be taking user feedback and possibly relea

Jun 15, 2026
New Public Test Build Coming Soon

Hello again! The state of 1.0.3 Following the recent pause / break, I've made enough progress on the 1.0.3 update to release a public test build, this is not the complete update and is still missing t

Feb 12, 2026
Followup / Clarification

What did "parting ways" mean? Unfortunately a lot of people saw the phrase "parting ways" and assumed it meant I was canceling development. This is not the case, and instead purely refers to me severi

Feb 11, 2026
Parting ways with Wrenchy Productions & A few other changes

I'm going to quickly prefix this announcement by saying that this is far more direct than normal, but regardless I think honesty and directness is important here. Wrenchy Productions Alright so I'll j

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresCasual, Indie, Simulation, Early Access
Player tagsCasual · Simulation · Sandbox · 3D · Early Access · Indie · First-Person · 1980s · Multiplayer · Online Co-Op (SteamSpy community voting)
FeaturesMulti-player · Co-op · Online Co-op · Steam Achievements · Family Sharing
LanguagesEnglish
Achievements7
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: 10 64-bit Processor: Core i5-3570K, Ryzen 5 1500X Memory: 8 GB RAM Graphics: GTX 1070, RX 5600-XT DirectX: Version 11 Network: Broadband Internet connection Storage: 1 GB available space