Changing game resolution in The Sims Complete Collection on MacOS

@ldthomson , the resolution is changed under game options. So, start up your game as normal. Next once in a neighborhood or game, look for the three dots (they look like this ... ) and click on that. That will bring up the options. Next you should see an icon that looks like a computer monitor, the resolutions options are found there. And then you can change the resolutions to whichever one you fancy.