Cities: Skylines II
Steam News 29 April 202622d ago

Spring Cleaning - Patch 1.5.7f1

Hello Mayors! Patch 1.5.7f1 is now live, and we’re excited to get your feedback. As always, if you have anything that you would want to report after playing 1.5.7f1, then you can submit a bug report over on our forum! B…

Update log

Full Cities: Skylines II update

The complete published notes, normalized for clean reading and source attribution.

Repeated intro

Hello Mayors!

Extracted changes

11 fixes8 additions5 changes1 removal
  • Gameplay
  • Workshop
  • UI and audio
removedBig changes are also coming to Paradox Mods! Previously, all actions in the in-game Paradox Mods required the mod downloads to be completed before moving on to the next step, like browsing and adding more mods. In this patch, this behaviour is changed so that actions and mod downloads are no longer dependent on each other. The tracking of mod downloads has also been made more precise and consistent, with the addition of parallel downloads and a queueing process. You can read more about the changes for Paradox Mods from the Dev Diary - Updates for Paradox Mods that we posted last week.
addedNew features:Historic Building-option When enabled, selected buildings will be prevented from leveling up or being abandoned.
addedNew features:In-game performance testing tool, accessible from the main menu options tab called “Benchmark”. New launch parameter -benchmark to start benchmarking directly on startup.
addedNew features:Encyclopedia New chapters have been added: Building Customization, Road Zones.
changedNew features:UI toolbar scaling and opacity setting.
addedNew features:Universal mod-button added to the main UI where mod creators can choose to place their mods into a unified menu.
The “Urban Cycling Initiative” policy now increases bicycle usage20% to 50%

Patch 1.5.7f1 is now live, and we’re excited to get your feedback. As always, if you have anything that you would want to report after playing 1.5.7f1, then you can submit a bug report over on our forum!

Big changes are also coming to Paradox Mods! Previously, all actions in the in-game Paradox Mods required the mod downloads to be completed before moving on to the next step, like browsing and adding more mods. In this patch, this behaviour is changed so that actions and mod downloads are no longer dependent on each other. The tracking of mod downloads has also been made more precise and consistent, with the addition of parallel downloads and a queueing process. You can read more about the changes for Paradox Mods from the Dev Diary - Updates for Paradox Mods that we posted last week.

With this update to the SDK, script-mod creators will have to recompile their mods so that they can be compatible. So, if you use mods, please give your favorite mod creators time to update their mods so that you don’t experience glitches/unintended bugs.

New features:

  • Historic Building-option

    • When enabled, selected buildings will be prevented from leveling up or being abandoned.

  • In-game performance testing tool, accessible from the main menu options tab called “Benchmark”.

    • New launch parameter -benchmark to start benchmarking directly on startup.

  • Encyclopedia

    • New chapters have been added: Building Customization, Road Zones.

  • UI toolbar scaling and opacity setting.

  • Universal mod-button added to the main UI where mod creators can choose to place their mods into a unified menu.

Gameplay:

  • Stopped citizens from moving in and out with taxis to reduce the move-in traffic.

  • Reduced the overall dog population by adjusting household pet limits and spawn probabilities. No dogs were harmed in this process. Affects new households (including in existing saves).

  • The Education system has been balanced to better align elementary and high school demand, reducing extreme imbalance with elementary schools while high schools remained underused.

  • Reduced cases where citizens get stuck during robberies.

  • The “Urban Cycling Initiative” policy now increases bicycle usage from 20% to 50%.

  • Fixed mixed housing causing commercial and medium-density residential demand to permanently stay low.

  • Fixed signature offices being incorrectly treated as available for sale, causing office demand to drop even while occupied.

  • Fixed office demand using wrong data for citizens and removing a multiplier workaround, which was causing too many Software companies to spawn. City production statistics are now sampled over a longer time period, reducing fluctuations caused by time of day.

  • Fixed an issue where a handful of commercial buildings received no customers, killing demand. Commercial demand is now based on how well-stocked your shops are on average.

  • Fixed outside connections not working with non-highway roads.

  • Fixed an issue where students could only participate in leisure activities during study time.

  • Fixed an issue where buses and trams could get stuck in a permanent boarding state at busy stops, preventing departure and causing vehicle queues and despawning.

  • Fixed an issue where building upgrades could stall and not progress when resource delivery processing was skipped during certain update frames, causing the level indicator to become stuck.

  • Fixed port mail transfer pathfinding.

  • Fixed an issue where some offices could stop producing or trading in certain situations.

UI:

  • Added option to adjust toolbar size

    • Buttons and some other elements will scale with the toolbar.

  • Added option to adjust UI transparency

    • Affects toolbar and panel background transparency.

  • Added tooltips to the Encyclopedia.

  • Fixed an issue in Photo Mode where visual settings did

Source

Steam News / 29 April 2026

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