Cities: Skylines

Cities: Skylines

Customize your city!
Create and upload new mods and assets to add new buildings, items, and game mechanics to Cities: Skylines. Explore new maps and share save games.
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what is Iusermod and how I can fix it
When I entered the game I found many mods were unavailable and it showed that
"No lUserMod implementation for mod XXXX. A mod must implement lUserMod."
It happened after the update march 27. I thought that maybe the mods were not compatible with the new version but in fact they haven't been available until today. I wonder what's happening and how I can solve it