Cities: Skylines II 1.6.4f1 Patch Notes (10th November 2026)
Cities: Skylines II 1.6.4f1 updates Paradox Mods, fixes performance and gameplay bugs, and adds DLSS 4.5 support.
Patch 1.6.4f1, titled Seasonal Shift, has been released. The update acts as groundwork for the upcoming Park Adventures DLC and brings the improvements seen in the latest Open Beta to the live version. The patch also adds a couple of bug fixes and improvements to Paradox Mods.
The update adds a 'By followed creators' tab for browsing mods and a featured section with the latest mods from followed creators. A badge was added on the avatar of creators you follow, and a 'Follow latest playset version' setting was added to subscribed playsets. The option to change a mod's visibility directly from the PDX Mods UI was added. Logged-out players can now open and manage their Playsets and Library. Creators' shared playsets can now be viewed while logged out.
The patch fixes cities building up too many companies with no buildings, causing performance issues. It also fixes the Hydroelectric Power Plant not functioning. The Coherent UI framework was updated. The game mode image flickering when hovered in the menu was fixed. Trees with growth turned off continuing to grow were fixed. Missing translations for the Downtown Market Set were added.
The upscalers listed under Misc are DLSS 4.5, FSR 3 and XeSS 3, and the benchmark save was updated. Subscribing to the Paradox Newsletter unlocks the Grand Post Office, a new signature building. The changelog confirms these changes were published on November 10, 2026, via Steam.
The Visibility field was removed from the asset upload panel. Mods are now hidden by default and visibility can be changed from the PDX Mods UI.
Full Patch Notes
▲ Buff▼ Nerf✓ Fix◆ TweakHello Mayors!
We are happy to share our latest update, Patch 1.6.4f1, with you! This update acts as groundwork for the upcoming Park Adventures DLC and brings the improvements seen in our latest Open Beta to the live version, with the addition of a couple of bug fixes and improvements to Paradox Mods. You will also be able to unlock a new signature building by subscribing to the Paradox Newsletter!
- Subscribe to the Paradox Newsletter to unlock the Grand Post Office, a new signature building.
Gameplay
- Fixed cities building up too many companies with no buildings, causing performance issues.
- Fixed the Hydroelectric Power Plant not functioning.
UI
- Updated Coherent UI framework.
- Fixed the game mode image flickering when hovered in the menu.
- Added missing translations for Downtown Market Set.
Visual
- Fixed trees with growth turned off continuing to grow.
Misc
- Upscalers:
- DLSS 4.5
- FSR 3
- XeSS 3
Editor
- Fixed missing screenshots when updating an asset mod.
- Removed Visibility field from the asset upload panel. Mods are now hidden by default and visibility can be changed from PDX Mods UI.
Modding Template
- Removed Visibility support from Publish Configuration. Mods are now hidden by default and visibility can be changed from PDX Mods UI.
Paradox Mods
- Added a 'By followed creators' tab for browsing mods
- Added a featured section with the latest mods from followed creators
- Added a badge on the avatar of creators you follow
- Added a 'Follow latest playset version' setting to subscribed playsets
- Added the option to change a mod's visibility directly from the PDX Mods UI
- Logged-out players can now open and manage their Playsets and Library
- Creators' shared playsets can now be viewed while logged out
- Improved the design of the search, filter and tab components
Bug Fixes
- Fixed mod content sometimes not loading on startup, typically when using the Continue option from the launcher.
- Fixed rare cases of Mods UI not loading correctly on startup
- Fixed playsets sometimes not loading on startup
- Fixed subscribing to a shared playset opening the wrong version
- Fixed shared playsets from other players showing the wrong version
- Fixed managing playsets while logged out
- Fixed an endless loading loop on a creator's shared playsets
- Fixed an error when removing a mod from the Library while offline
- Fixed subscribed mods missing from the playset if their download failed
- Fixed some downloads not being tracked when subscribing to several mods
- Fixed a crash in the DLC dependency wizard while offline
- Fixed the follower count not updating on follow and unfollow
- Fixed special characters in forum comments not being escaped
Sources
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Written by
Nathan LeesGaming journalist and founder of XP Gained. Covering patch notes, breaking news, and updates across 160+ games.
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