Re: SimCity install - Origin keeps closing out when I try?

Hi  -  Are you running 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 you are running an earlier MacOS, please reply back with more info about your Mac. Instructions on how to do so here - https://answers.ea.com/t5/The-Sims-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612396/highlight/true#M162