https://www.youtube.com/watch?v=I5jTM0nOzvM

Video from the creator of the city in the trailer of the new Cities Skylines 2 Bridges & Ports DLC, where they get into some details about creating the city and playing with the new mechanics.

Screenshot from the Bridges & Ports trailer with something that looks like a road tool

On the 3rd of October 2025, the latest patch for Cities: Skylines II (version 1.3.5f1) went live. This is a free patch which is released to everyone who owns the game. The patch is live now on Steam. It will be live on Microsoft Game Pass as soon as possible.

• This patch addresses a security vulnerability within the Unity engine used by Cities: Skylines II (and many other games) that was made public yesterday

• This does not affect Cities: Skylines (2015) as the vulnerability is only present in more recent versions of the Unity engine

• Although there are no changes to the underlying code of the game that mods can interact with, mods which specifically target the previous version number of the game (v1.3.3f1) may display errors or warnings

• Although modders have been given access to the update to re-build their mods to target the latest version of the game, due to the urgent nature of security vulnerabilities the patch was published as soon as possible

• Please be patient. Everyone, even Cities: Skylines mod creators, has a personal life and might not be able to update a game mod immediately at launch. Do not bug creators to update their mod.

Please read the links provided by this thread carefully, and completely, to understand what you need to do to get your game working again.

🚨 How to keep yourself safe

• Unity state that there is "no evidence of any exploitation of the vulnerability nor has there been any impact on users or customers"

• Regardless, you should update your game as soon as the patch is made available to you via Steam or Microsoft Game Pass so that you receive the protection against this vulnerability

• The vulnerability can only be exploited if the game is running, so if you're currently playing you should close the game immediately and not re-open it until the update is applied

• You should not attempt to work-around or circumvent Steam or Microsoft's automatic updates to "keep playing with mods" as you will be exposing yourself to this vulnerability if you do so

Seriously, just update your game

Created by Feindbold, Gèze, Gruny, and REV0

Developer Diary (written by REV0)

• Read it on the Paradox Website

Pack Contents

Zones

• Low Density Residential (Roof type Gable)

• Low Density Residential (Roof type Gambrel)

• Medium Row Density (Historical Amsterdam)

• Medium Density Residential (1920s)

• Low Rent (Post War Redevelopment)

Service Buildings

• Fire Stations (2), Medical Clinic, Hospital, Police Station

• Elementary School, High School, University, College

• Crematorium

• Modular Cemetery Complex

Utilities

• Substation, Water Tower

• Post Office, Historic Post Office (unique)

• Parking Garages of 3 sizes

• Train Station

• Windmill

Props

• Bollards, Modular walls, cemetery props that can be used in-game,

• Clocks and Wall lights which are only available in editor (or via mods)

Support for bikes

• Some assets are propped with the vanilla bike racks (which have been in the base-game since launch)

• It was confirmed in yesterday's Dev Diary that once bikes arrive in the game, these racks will become functional

• Therefore, the working assumption is that the bike racks in these assets will be functional too, once bikes are added to the game

Hello mayors! We’re back with another look at what is happening in the Colossal Order offices. In this dev diary, we’ll share an update on Bridges & Ports, what is happening with bicycles, and what bug fixes the team is currently tackling.

Before we dive in, just a quick note: this dev diary isn’t tied to a specific patch or release. It’s simply a peek at some of the things we’re working on right now. Think of it as a progress update rather than a complete overview of upcoming content. Alright, let’s get to it.

Patch includes:

Enablement of Shops of Shibuya and Map Pack 4 Content Creator Packs

Impact on you:

As this update is only a content-enablement patch, there are no changes to the underlying code of the game and therefore there will not be any impact on mods.

You will receive an automatic notice that mods "may be out of date", this is harmless.

Exceptions:

• Loading Screen Mod Revisited by algernon - There is an update for this mod which is ready to be released as soon as the patch is live

• Find It! 2 by sway - There will not be a filter for the Shops of Shibuya content, but the items will still be available in their respective categories

Modders may choose to re-publish their mods to target the latest version of the game, but it will not impact your ability to use them if they don't.

Why are they breaking my save again?

They're not. There are no underlying changes to the code of the game, this patch only enables additional content.

Shouldn't Colossal Order be focusing on Cities: Skylines II?

They are. The Content Creator Packs feature maps and assets made by community members, and it was integrated into the game along with this patch by Tantalus Media who are the developers of the console ports.

Colossal Order remain solely focused on Cities: Skylines II

If something goes wrong

• Make sure your mods (especially Loading Screen Mod Revisited) have been updated to their latest version

• Use Skyve to check compatibility between your modlist and ensure that you're using up-to-date mods which target recent versions of the game (which will therefore work with this patch)

• Join the Cities: Skylines Official Discord Server,#cs1-tech-support is dedicated to troubleshoting

• Be patient, we're all in this together!

New train station assets by Rev0 have been announced! Source: Allianz pro Schiene on Instagram

Collaboration with Allianz pro Schiene & Deutsche Bahn AG

I'm very proud to announce one of the most important projects I've ever undertaken for the Cities: Skylines franchise, and a first in the city-builder genre. This has been in the works since 2023 and we've reached a milestone in the art development to be confident in showcasing the ongoing work with the public, especially at this moment in time - 'Tag der Schiene' - the annual Railway Days event taking place in Germany.

Allianz pro Schiene

Allianz pro Schiene is an NGO and the industry body for 24 non-profit organizations and 150 companies from the railway sector, focused on promoting the improvement of the railways in Germany. Together, they represent the interests of the public, the workers and the sector itself, working towards more environmentally friendly, efficient, and modern railways.

Bahnhof des Jahres

Railway Stations are more than just basic stops. They are the entry points of any city, a meeting place, and more; they each have a unique story to tell. Each year, the best railway station of Germany is picked by a jury, based on various factors such as environmental friendliness, accessibility and traveler comfort. Whether big, small or brand new, more than 5000 stations in Germany get to participate this yearly event... in Cities: Skylines

To celebrate the 20th anniversary of the competition, and for the first time ever, both DB and Allianz pro Schiene are making an entrance into a city-builder game.

From the list of previous winners, four stations were selected with the fifth being nominated by DB:

• Oberstdorf Station
• Baden-Baden Station
• Lutherstadt Wittenberg Main Station
• Mannheim Main Station and…
• Berlin Main Station.

All five stations, including props, are currently being recreated by yours truly. We are aiming for the most of the content to be released with the Cities: Skylines II asset editor and they will be available for free on Paradox Mods.

Youtube Showcase Special thanks to City Planner for taking the footage and testing the stations. He'll be using the stations in future so make sure to follow his Neu Dresden build! You can check the short trailer we created for you, linked above.

Project Scope - Stations

Oberstdorf Station -

Known for its natural beauty and mountainous landscape, the town of Oberstdorf is served by this station carrying the same name. Oberstdorf was the joint-winner of the 2006 award, shared with Dammtor Station.

Baden-Baden Station -

Located on the Basel-Karlsruhe line, the original station was built in 1844. The current station (rebuilt in 1904) features a 5-track layout and is served by regional and ICE lines. It caters to an average of 6000 passengers and 143 trains per day and was the winner of the 2010 award.

Lutherstadt Wittenberg Main Station -

Also known as the 'Green Station', Lutherstadt Wittenberg is the modern gateway to the historic town of Wittenberg. The station is built with environmental factors in mind; its rooftop features a unique design for rainfall retention and solar power, allowing the station to generate its own electricity. Design wise, it's taking inspiration from Luther's teachings; it doesn't feature any decoration, nothing fancy of any kind. This 'Reform' Station was the winner of the 2017 award.

Mannheim Main Station -

Serving over 600 trains carrying 100,000 passengers daily, Mannheim is one of the largest transit hubs in Western Germany. It is located at the crossroads of major main lines, like Zurich - Berlin, Frankfurt am Main - Paris, and Milan - Amsterdam. Opened in 1887, the station has seen multiple reworks which made my job rather difficult in recreating it. Mannheim station is also a commercial center, offering many amenities over two floors of commercial space, which are fully modeled for Cities: Skylines II. Mannheim was the winner of the Best Railway Station award in 2005.

Berlin - The icon.

The last station of the pack is the signature of German Railways - Berlin Main Station. Built following the reunification of Germany, the station serves 300'000 people daily. With its breath-taking architecture, Berlin station is also a tourist attraction; it is likely the most photographed station of Germany. Its fully open architecture allows building to be illuminated via natural light, while also removing the barriers between the city and the station. Hosting shops, restaurants and special events it is also one of the cultural hotspots of Berlin. Thanks to its unique transparent structure, you can observe the complete flow of passengers, which will be replicated in Cities: Skylines II as well, thanks to its capabilities.

Supporting Content

I personally expanded its scope following the editor situation, and as a result, you'll be getting extra content at the end of this project. These include most of the station props that under the ownership of DB AG, and of course vehicles.

They replied this on the forums just a moment ago with some insight to the priorities they are working on right now.

TLDR: All hands are on deck for the release of the expansion Bridges & Ports; after that works resumes on other things.

Outakes:

Unfortunately, the Asset Editor related work has had to be pushed to the background while we have been focusing on other priorities. After the Bridges & Port related work, we will have the team tackle the remaining issues, and the asset editor for buildings will be released as soon as it’s ready.

The plan is currently to support building assets (and props) and expand the supported asset types in the future. Once we have established basic support for assets in the Editor, more complex asset types, such as vehicles and networks, can be worked on.

We’re currently working on:

    Fixing the issue with too few resources produced by offices being consumed, causing office company worker counts to drop to the minimum amount.

    Updating the production panel to provide a better understanding of the production and consumption of resources in the city.

    Rebalancing resource consumption to ensure all companies work as intended.

    Improving the water simulation and updating the maps to ensure they have water outside the playable area.

The reason we still call PDX mods beta is because the asset editor is missing, is not really any features related to PDX mods, its just to set expectations on modding in general.

More animations and updates to citizens are in the works but we do not have an ETA for when they’re ready for release. Similarly, bicycles are planned but on hold until Bridges & Ports is done.

Priorities after the expansion is released: Bicycles, Asset Editor, and more bug fixes.