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Steam News6 June 202625d ago

WEEKLY UPDATE #4

This update focuses on performance, usability, and stability. VRAM usgae has been reduced by approximately 75% through extensive texture optimizations, the user interface has been completely redesigned, and save managem

Full notes

Full Chernobyl: Simulator update

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What changed

11 fixes4 additions7 changes1 removal
  • UI and audio
  • Gameplay
  • Performance
  • Fixes
  • Balance
fixedThis update focuses on performance, usability, and stability. VRAM usgae has been reduced by approximately 75% through extensive texture optimizations, the user interface has been completely redesigned, and save management has been improved with support for non-destructive sub-saves. Numerous bugs have been fixed across Windows and macOS, several simulation systems have been corrected to better reflect real-world behaviour, and visual consistency has been improved throughout the control room.
changedImprovements
changedOptimized textures to significantly reduce VRAM usage (from approximately 8 GB to ~2 GB).
changedCompletely revamped UI, including: Main Menu Settings Load Game Dialog Windows Task List Intro Dialog
addedAdded descriptions for every setting option.
changedUpdated and improved translations.

This update focuses on performance, usability, and stability. VRAM usgae has been reduced by approximately 75% through extensive texture optimizations, the user interface has been completely redesigned, and save management has been improved with support for non-destructive sub-saves. Numerous bugs have been fixed across Windows and macOS, several simulation systems have been corrected to better reflect real-world behaviour, and visual consistency has been improved throughout the control room.

Breaking Changes

  • AR-1, AR-2, and AR-M's Measurement and Execution switches now correctly select the required number of channels for AR operation (3 or 4), matching real-world functionality.

Improvements

  • Optimized textures to significantly reduce VRAM usage (from approximately 8 GB to ~2 GB).

  • Completely revamped UI, including:

    • Main Menu

    • Settings

    • Load Game

    • Dialog Windows

    • Task List

    • Intro Dialog

  • Added descriptions for every setting option.

  • Updated and improved translations.

  • Reworked save managementsaving the game generates a new save file instead of overwriting the previous one. Old saves can be pruned though Load page.
  • Retextured wall panels to use a single tileable texture, reducing GPU memory consumption.

  • Added missing control logs.

  • Added an option to mute UI background music.

  • Improved visual consistency of Selsyn and DKE red/green indicator lamps.

Fixes

  • Fixed multiple Windows-specific crashes.

  • Fixed a black screen issue that could occur after changing settings on Windows.

  • Fixed persistence issues affecting period logic malfunctions.

  • Fixed LAR incorrectly using the AZ-5 signal instead of the AZ-5T trigger signal.

  • Fixed resolution-related issues in the settings menu.

  • Fixed various display issues in the settings menu.

  • Fixed memory leaks caused by repeatedly starting and quitting games.

  • Fixed windowed mode issues on macOS.

  • Fixed an issue where interaction outlines briefly flashed white before turning blue.

  • Fixed DKE/SFKRE power release indicators around selsyns to correctly display power release deviations (red/green).

  • DKE probes now use ion chambers with current corrections and a noise threshold for improved accuracy.

  • Temporarily disabled DirectX 12 on Windows due to ongoing Unity engine issues.

Community Translations

Want to help translate the game? Contribute here:

https://translate.rikarin.io/

If you experience any issues you can switch to last-update branch.

Source

Steam News / 6 June 2026

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