- Steam App
- Cities: Skylines II (949230)
- Event type
- patch note
- Published
- 3 October 2025 - 09:05:30 UTC
- Source
- steam_community_announcements
Hello mayors! Here is a Hotfix addressing security-related concerns in the Unity version used in Cities: Skylines II. You can read more about it here: https://unity.com/security/sept-2025-01 These security concerns do not affect Cities: Skylines (1), and it will not require any patching.