Forum Discussion
puzzlezaddict
5 years agoHero+
@madsreisinger and @danielf0000 If your Mac runs Catalina, you won't be able to install Sims 3: the game is a 32-bit app, and Catalina is 64-bit only. There's a 64-bit version of Sims 3 for macOS coming at some point, although the last update was just that EA is still working on it.
https://answers.ea.com/t5/Technical-Issues-Mac/the-sims-3-64-bit-amp-metal-release/m-p/8820136#M6265
In the interim, your only options are to play on another computer, to install Windows on your Mac (via Bootcamp or Parallels), or to install Mojave on an external hard drive. If you'd like more information about any of these options, please feel free to ask.