over 4 years ago - Avanya - Direct link
When does it crash? Do you see the launcher pop up after pressing Play in Steam? Does it crash after pressing Play in the launcher?

If you have Citrix Workspace that's a known issue with all Unity games and Citrix. There are a few workarounds you can try here:
https://forum.paradoxplaza.com/forum/threads/citrix-workspace-crashing-cities-skylines.1158220/

If you don't see the launcher and nothing happens when you press Play in Steam, then the launcher probably didn't install right. Try the steps in this thread:
https://steamcommunity.com/app/255710/discussions/0/1742265315844206043/

If none of that helps or is relevant for your situation, then we will need the output_log.txt (called player.log on Mac and Linux) to be able to help.

Here's where to find the log depending on your operating system. To easily find the local files for the game, right click your game in the Steam library, select Properties, go to the Local Files tab and select Browse local files.

Windows
\SteamApps\common\Cities_Skylines\Cities_Data\output_log.txt

Mac OS X
Users//Library/Logs/Unity/Player.log

Linux
~/.config/unity3d/Colossal Order/Cities: Skylines/Player.log


As we can't attach files here on Steam, you will need to upload the file somewhere else. Here's a few sites you can upload it to, which do not require you to sign up first:

https://uploadfiles.io/ - free, no sign-up, can handle large log files
https://paste.ee/ - fast, no sign-up required (some log files will be too large for it though)
https://zerobin.net/ - bit clunky, but can handle huge files, no sign-up required