Supported Features
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
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Reduced Motion
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Captions
RBMK Lab: Nuclear Power Plant
Atomic Reactor Simulator Game
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New in 2.0: The Night of the Test. Live 26 April 1986 at Chernobyl Unit 4 on a teaching model, choose differently, and find the ways the night could have ended safely.
Live the night of 26 April 1986 at Chernobyl Unit 4, then take the night shift at an RBMK-style plant yourself.
THE NIGHT OF THE TEST
• The night of the turbine test at the real clock times, played on a dedicated teaching model
• Every historical beat cites its source; the crew appears by role, never by name
• Eight decisions where you can choose differently, and twelve endings to find, from the safe ones to the choices that would not have saved it
• Look inside the core: the operating margin, the steam voids and the rods, slice by slice
SHIFTS
• The dispatcher calls for load. Work the rods, feedwater, bypass and pumps to deliver it without tripping the unit
• Six career shifts and a new daily shift every day, the same for every operator
• Stars, personal bests, ranks from Trainee to Chief engineer, and Game Center leaderboards
• A shift log after every shift: your load trace, your closest call, and exactly why the unit tripped
THE CONTROL ROOM
• A glowing reactor lid with 1,872 channel caps, needle meters, an annunciator wall, tactile faders and AZ-5 under a flip cover
• One live plant board in every mode: zoom from the whole plant to the loop, turbine, condensate or feedwater, or open it full screen
• A trend recorder, and synthesised plant sound with a one-tap mute
LEARN WHY IT REACTS
• Guided training drills with predictions and causal debriefs
• A sandbox with more than a dozen faults to inject
• Reference notes on every signal
Plays offline. No account, no ads, no tracking. One optional lifetime Pro unlock adds the advanced shifts and drills and the design what-ifs for the night.
RBMK Lab is a game and a learning tool built on simplified, teaching-scale models. The 1986 chapter is a sourced, dramatised reconstruction tuned to the published sequence of events. It is not evidence about the accident's cause, and nothing in the app is operator training or engineering guidance.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
RBMK Lab 2.0: The Night of the Test.
• A new chapter: the night of 26 April 1986 at Chernobyl Unit 4, sourced and dramatised on a teaching model, with eight decisions and twelve endings to find
• A new main menu
• One live plant board in every mode: zoom between the loop, turbine, condensate and feedwater, tap to enlarge, and tap a part to see what it is
• A trend recorder in Shifts and in the night
• Game Center leaderboards for the career shifts
• Calmer plant sound, with a mute on the menu
The developer, Jan Sokol, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Jan Sokol
- Size
- 14.2 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 9 more
- English, Czech, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
9+
- 9+
- Infrequent
Horror/Fear Themes
- In-App Purchases
Yes
- RBMK Lab Pro $7.99
- Copyright
- © 2026 Cognerva
