Re: Installing the sims 3 on crossover on M1 Mac
@aodoherty You'd need to install the Windows version of Origin in order to install the Windows version of Sims 3 and run it through Crossover. Have you tried downloading Origin for Windows?
You could also try installing the new EA Desktop App instead, although I'm not sure whether your Sims 3 packs would show as owned. They didn't for me the last time I checked. But the app is still in beta, so it's not surprising that some things don't work.
https://answers.ea.com/t5/General-Discussion/FAQ-EA-Desktop-Beta/td-p/9090992