Re: macOS thread - updated to include 10.15 Catalina
10.15 Catalina (beta)
Sims 3
32-bit Applications no longer run in Catalina. Please read this guide on installing a previous version of macOS or Windows in order to carry on playing Sims 3.
Sims 4
Currently Sims 4 will not load in the beta of Catalina as there is one 32-bit file, ActivationUI, that needs updating/removing. Do not update to Catalina at this time if you want to carry on playing.