Hotfix - Patch 1.5.10f1
Hotfix 1.5.10f1 addresses critical saving issues and 'NotSupportedException' errors affecting old save games and custom maps.
Images © Cities: Skylines II via Steam
✚Bug fixes3
- General
- Fixed a critical bug causing 'NotSupportedException' errors and preventing players from saving their games.
- Resolved an issue that specifically prevented the saving of older save game files.
- Fixed an issue that prevented custom maps from being saved correctly.
subjects affected (1)
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Patch history
- Hotfix - Patch 1.5.8f1May 5, 2026 · 2mo
Hotfix addressing significant startup loading time issues caused by Paradox Mods localization entries and general stability improvements.
+2→ - Hotfix - Patch 1.5.5f1Feb 26, 2026 · 4mo
A hotfix focusing on reverting incorrect lighting values, fixing Global Illumination settings, and addressing minor UI and system bugs.
+4→ - Hotfix - Patch Notes 1.5.3f1Dec 10, 2025 · 7mo
Hotfix 1.5.3f1 addresses a specific UI issue regarding mod loading.
+1→ - 1.3.3f1 Patch NotesJun 11, 2025 · 13mo
Version 1.3.3f1 focuses on extensive cargo system fixes, stability improvements, Easy Mode balancing, and the addition of new piers, quays, and bridges.
+5−3→ - Patch Notes for 1.0.11f1Oct 26, 2023 · 33mo
A performance-focused update targeting rendering optimizations, stutter reduction, and critical crash fixes.
+5→
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Patch Note #3
Patch #3 focuses on quality-of-life improvements, storage expansion, and several physics and save-game bug fixes.
1.8 Version Patch Notes: Optimizations and Bug Fixes (July 17, 2026)
A comprehensive update focusing on combat balance for various Martial Arts, the introduction of the Training Terrace Preliminary mode, and extensive bug fixes across systems and maps.
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