Last Nuclear Darkness cover
Last Nuclear Darkness screenshot
Genre: Simulator, Adventure, Indie

Last Nuclear Darkness

Patch notes: V 0.2.07.054

The following fixes have been made:


  • Fixed bug in the service compliance event, where a value greater than 100% was established as a goal.

  • Fixed the bug that trapped the player in the supply room.

Patch notes: V 0.2.07.053

The following improvements have been made:


  • Added a new camera to the surveillance panel so you can see what's going on inside the core pool.
  • Added buttons to the Compliance Service app to make it easier to navigate.
  • Modifications were made to the labels of some meters to favor the translation into German.


The following fixes have been made:


  • Fixed the animation of the speed regulator of the condenser circulation pumps.
  • Fixed an bug with the camera after using the virtual number pads in the game.
  • Fixed and normalized some units of measurement and power and energy labels.
  • Fixed bug that prevented AO from reporting the reason for sometimes leaving some operational control.
  • Fixed AO bug that caused a crash when it was monitoring the fuel load of the generator sets.
  • Fixed bug when performing the maintenance check during the construction of some components.
  • Fixed bug that prevented stopping the AO operational task of monitoring the fuel level of the generating sets.


This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.07.052

The following improvements have been made:


  • Added an internal log to be able to know the activity of the reactor.
  • Added gauges with history for reactor core and pressurizer pressure and temperature, volume of the pressurizer, and energy generated by the turbines.
  • Added three new audit award templates.
  • New system of important messages when starting the game.
  • Made deep changes to alternate input to prevent slowness and inconsistencies in mouse movement.

    <*> Added German language to the game: interface, controls and subtitles (without voices). A great translation job done by Polonium209.


The following fixes have been made:


  • Fixed bug in reactor core vent valve.
  • Fixed bug of the increase in temperature of the external vessel when there is a leak.
  • Fixed bug of Pressurizer cooldown valve causing too slow cooldown when low coolant and too much steam.
  • Fixed bug with fueling animation on gensets.
  • Fixed bug with incorrect coloring on fuel cans after loading a saved progress.
  • Fixed bug where incorrect build time was displayed after loading a saved progress.
  • Fixed bug where build time was incorrectly displayed when switching between pending build items.
  • Fixed bug of spontaneous destruction of an evaporator when replacing a previously destroyed one.
  • Fixed bug of inaccessible valve to manually drain the evaporator of loop 2.
  • Fixed some typographical errors in the English language.


This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.07.051

The following improvements have been made:


  • Added primary circuit steam presence indicator on core console.
  • Added alarms for the low and high presence of steam in the primary circuit.
  • Added alarms for high pressure and high temperature in the Condenser.
  • Added an option to disable emergency stop monitoring to the AO control app on the tablet.
  • Added an reactor core vent valve.
  • Added an icon in the game menu to notify new updates.
  • Added a switch on the core fuel panel to override safety controls.
  • Adjustments were made to the core gauges to avoid fluctuating temperature readings.

  • [SIMULATION ENGINE] Changed the core temperature sensor: it now measures the temperature of the coolant. More information at https://nuclearesgame.blogspot.com/2023/05/measuring-core-temperature.html

  • [SIMULATION ENGINE] Adjusted the temperature gauge to calculate the correct value when there is low coolant volume. More information at https://nuclearesgame.blogspot.com/2023/05/the-correct-temperature-reading-of.html

  • [SIMULATION ENGINE] Improvements in the behavior of steam within the primary circuit. More information at https://nuclearesgame.blogspot.com/2023/05/steam-in-primary-circuit.html

  • [SIMULATION ENGINE] Improved the simulation of ejecting fuel from the reactor core if not done safely. More information at https://nuclearesgame.blogspot.com/2023/05/fuel-block-ejection.html


The following fixes have been made:


  • Fixed bug with hazars suit breathing sound after train escape.
  • Fixed bug of instantaneous plant maintenance status report.
  • Fixed bug in pressure control of the Pressurizer.
  • Fixed bug with heating without volume in the Pressurizer.
  • Fixed bug in how the Core is affected when the circuit is under pressure.
  • Fixed bug in heat exchanger when pipes were saturated with steam.
  • Fixed bug of AO attempting to perform an emergency stop even when the reactor is off.
  • Fixed bug of low integrity alarm when loading a progress with no fuel loaded.
  • Fixed bug of AO when controlling control rods, in maximum mode it operates as if it were nominal mode.
  • Fixed bug of evaporator destroyed with full integrity.


This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.07.050

The following improvements have been made:


  • Added a new ability in AO to be able to monitor gensets and fuel them when needed.

  • Added the ability to move knobs, sliders, and manual valves using the [A] and [D] keys.

  • The event "tube rupture" was added to the catastrophe type events.

  • An option to show or hide the interface was added (U key).

  • If AO has the task of controlling the Control Rods active, it does not abandon the task even if the operating limit is exceeded.

  • Added Spanish language to the game (no dialogues included yet).


The following fixes have been made:


  • Fixed bug that left the screen out of focus after the failed audit notice.

  • Fixed bug with Pressurizer valves opening or closing too slowly.

  • Fixed cooling or heating factors based on circulating flow.

  • Fixed bug on evaporators when heated without enough coolant.


This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.07.048

The following improvements have been made:



  • New system of external audits.

  • Added to the game settings menu the option to enable continuous refresh of the values shown in the meter help tooltips (It may affect game performance).


More information at https://nuclearesgame.blogspot.com/2023/04/external-audits.html


The following fixes have been made:



  • Fixed the irreversible emergency stop error when loading a progress previous to the version V 0.2.06.046.

  • Fixed service level achievement reward per hour as it was not adjusting to player level.

  • Fixed bug with camera rotating up at random times.



This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.07.047

The following improvements have been made:


  • New reactor operating mode selector: shutdown, nominal, maximum.


More information at https://nuclearesgame.blogspot.com/2023/04/new-reactor-operating-mode-selector.html


The following fixes have been made:


  • Fixed the coolant temperature bug, which in some circumstances could be lower than the external water temperature.

  • Fixed bug with Emergency Battery Rack operating mode selector knob not resetting its position when loading a progress.

  • Fixed bug with continuous power generation when saving with turbines having residual inertia.


This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.06.046

The following improvements have been made:


  • Major fixes and improvements to Condenser simulation.


Important information at https://nuclearesgame.blogspot.com/2023/04/condenser-simulation-improvements.html


The following fixes have been made:



  • Corrections and improvements were made in the simulation of thermal balance between the Core, the Evaporators and the Condenser.

  • Fixed bug with saved progress app: selecting slot 3 would load slot 2.

  • Fixed bug of fixed power of digital meter of electric turbine when restarting the game.



This update is compatible with all previous savegames. If you're having trouble loading a saved progress, please let me know!

We are waiting for you in the game's Discord!

Patch notes: V 0.2.05.045

The following fixes have been made:


  • Fixed the "Wear" value on the tablet when displaying the items to be repaired.

  • Fixed the progress bar on the tablet when showing the progress of AO tasks.

  • Fixed the scale of the Coolant panel Pressurizer level gauge to match the gauge on the Pressurizer panel.

  • Fixed escape plan successful message not being displayed when escaping on the train.

  • Fixed the escape plan bonus: it was being assigned correctly but the points indicator was not refreshed.

  • Fixed bug where AO batteries disappeared when loading a previous progress.

  • Fixed bug with the pressure needle fluctuating on the reactor core panel.

  • Fixed the generator turbines indicator on the main valve panel.

  • Fixed AO bug when leaving control of operational tasks, in some cases it still did not report the reason.


The following improvements have been made:


  • The AO app on the tablet was modified so that it constantly refreshes the AO position and tasks.


The update is compatible with any previous savegame. If any error occurs, please let me know.

We are waiting for you in the game's Discord!

Patch notes: V 0.2.05.044

The following fixes have been made:


  • Fixed AO times to complete the maintenance report was corrected.

  • Fixed bug where some meters did not turn on the backlight in some situations.

  • Fixed bug in maintenance report after uploading a progress.

  • Fixed bug of character teleportation when disabling the train.


The following improvements have been made:


  • Added a progress bar to the AO app on the tablet to measure the progress of the maintenance report or maintenance tasks.

  • Added the wear value in the tablet repair app.

  • Added the Help app to the tablet, with some game concepts.

  • Added an animation to the movement of the gauge needles, to make them smoother and avoid jumps in the readings.


The update is compatible with any previous savegame. If any error occurs, please let me know.

We are waiting for you in the game's Discord!