Re: Cannot launch SimCIty: Complete Edition (Mac)

Hi  - Are you running on MacOS Catalina? Apple dropped support for 32-bit games like SimCity, beginning with MacOS Catalina 10.15. There is more information in this post: https://answers.ea.com/t5/SimCity-2013/Mac-SimCity-and-MacOS-Catalina/m-p/8298578#M127940 , including some options for running 32-bit games after upgrading to Catalina. 

If this is not the issue, please reply back with more information about your Mac. Instructions for doing so are here:  https://answers.ea.com/t5/The-Sims-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612396/highlight/true#M162