Dec 4, 2025
View on Steam↗Asset Mods Patch
4/5 Significant
Asset Mods arrive in Cities: Skylines II with a beta Editor update, alongside critical fixes for tram stations and pathfinding performance.
Key Changes
- 1Beta Asset Editor support for creating and sharing custom assets
- 2Performance optimization for unnecessary pathfinding calculations
- 3Fixes for Tram Junction, Parallel, and Loop stations (rebuild required)
- 4Structural update to base game and DLC asset handling
- 5Fixed crash when connecting bicycle paths to roundabouts in left-hand traffic cities
- 6Creator Pack compatibility update for new Editor features
- 7Paradox Mods SDK and platform version updates
All Changes
🛠️Modding Tools(3)
- newAsset Editor: Added the ability to create and share assets with the Editor (Beta).
- changeAsset System: Updated base game and all DLCs to support a new asset handling system.
- changeCreator Packs: Creator Pack compatibility update to support new Asset Editor features.
📈Performance & Stability(2)
- fixBicycle Path: Fixed crash to desktop occurring when connecting a bicycle path to a roundabout with left-hand traffic.
- fixPathfinding: Resolved performance issues caused by unnecessary pathfinding calculations in certain save files.
🚋Infrastructure(3)
- fixTram Junction Station: Fixed Tram Junction Station not functioning properly (requires rebuilding in existing cities).
- fixTram Parallel Station: Fixed Tram Parallel Station not functioning properly (requires rebuilding in existing cities).
- fixTram Loop Station: Fixed Tram Loop Station not functioning properly (requires rebuilding in existing cities).
💻Platform Updates(2)
- changePDX SDK: Updated Paradox SDK to version 1.39.3.
- changeParadox Mods: Updated Paradox Mods to version 1.13.1.
Summary
This update introduces the first iteration of Asset Mods for Cities: Skylines II. Players can now create and share custom assets via a beta version of the Editor, which has necessitated a structural update to how the base game and all DLCs handle assets. Beyond modding, the patch addresses a specific crash related to bicycle paths in left-hand traffic cities and resolves a performance bottleneck caused by redundant pathfinding calculations. Notably, three types of tram stations have been fixed, though players must manually rebuild them in existing cities to apply the fix.