You need it to download a digital version of the game but that's it. Mac users do not need Origin to actually play the game.Mac users do not have the ability to disable Expansion and Stuff Packs through the Launcher. The Mac game is patched to 1.67, not 1.69 like Windows users.This 2Gb limit is why the Launcher causes so many crashes as it uses a large of amount of RAM just to load, especially if you have CC/Mods and Exchange items. This is because the LAA issue that was patched for Windows users was never addressed for the Mac version of the game.

The Mac version of the game can only utilise up to 2Gb RAM, as opposed to the 4Gb RAM the Windows version can use.

There is a more detailed explanation here. This is the root of most problems that users experience and why it is extremely difficult to diagnose and fix any errors in the game. It is the Windows version of the game 'wrapped' using software called Cider which basically tricks the game into thinking it is running in Windows, an emulator of sorts.

The Mac version of the game is not natively written for macOS like Sims 1, Sims 2 and Sims 4 are.

If you want to play The Sims 3 but have updated to Catalina please see your options here. EA have announced that they are working on a 64-bit version but this has not yet been released.

The current version of the game is 32-bit and therefore will not work in macOS 10.15 Catalina.

The 5-step guide to installing the Sims 3 on a Mac Below you'll find various troubleshooting steps and links to all known issues and, where applicable, a workaround or potential fix. Consequently this can result in a lot of issues when trying to get the game to work.

The Sims 3 is no longer updated to support macOS or the hardware Apple have used since 2013. Information, Guides and Announcements for the EA app.

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