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Cities: Skylines

If a Cities: Skylines 1 city stops loading after an update or mod change, first make a separate copy of the save and record the active mod set. Paradox recommends a controlled Steam launch with `--disableMods --noWorkshop`; if the city loads under that test, one or more mods/assets are implicated, not automatically the save itself. Keep the Addons folder backed up before unsubscribing or deleting anything, then reintroduce current mods in small batches.

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Cities: Skylines reading path

If a Cities: Skylines 1 city stops loading after an update or mod change, first make a separate copy of the save and record the active mod set. Paradox recommends a controlled Steam launch with `--disableMods --noWorkshop`; if the city loads under that test, one or more mods/assets are implicated, not automatically the save itself. Keep the Addons folder backed up before unsubscribing or deleting anything, then reintroduce current mods in small batches.

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Cities: Skylines 1: Test a Mod-Related Save Failure Safely

Use Paradox's no-mod launch test first, preserve the city and Addons folder, then isolate the cause without confusing the 2015 game with Cities: Skylines II.

Read the relevant guideCities: Skylines 1 Won't Launch: Separate Mods, Logs and Memory Clues

Follow Paradox's original-game launch checks in order and capture output_log.txt before changing saves or reinstalling.

Read the relevant guide

Cities: Skylines guides

2 articles
Cities: Skylines 1: Test a Mod-Related Save Failure Safely

Use Paradox's no-mod launch test first, preserve the city and Addons folder, then isolate the cause without confusing the 2015 game with Cities: Skylines II.

Updated November 6, 2026 · 3 min read
Read guide
Cities: Skylines 1 Won't Launch: Separate Mods, Logs and Memory Clues

Follow Paradox's original-game launch checks in order and capture output_log.txt before changing saves or reinstalling.

Updated November 6, 2026 · 3 min read
Read guide

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These are AI-assisted, source-based guides, not claimed hands-on tests. Each article states its platform or mode limits. Game patches, world settings and mods can change the result.

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