irishelf67 wrote:
The software was NOT created for pre 2006 Macs. It wasn't even created until 2012. So it was not created for Power PCs...
According to Wikipedia, Sims 3 was released on June 2, 2009 with both the Windows and OS X versions on each side of the same disc. The Expansion Packs were first released in November, 2009 and further ones were continued to be released through October, 2013.
In this forum thread, Understanding how the Sims 3 runs on a Mac, it is explained that the Mac version of the Sims 3 is just the Windows version running in Cider:
"Cider™ is an extremely powerful technology that allows games to be released day and date with their PC counter-parts giving publishers significant upside revenue potential and leveraging marketing and branding initiatives. Cider also allows publishers to release either dedicated Mac versions of their games or PC/Mac hybrid versions (i.e. both versions of the game in a single box)."
Chances are that Cider in 2009 has continued to use PowerPC code, since the relevant version of Mac OS X at that time would have contained the Rosetta translation software that allowed all Macs to continue to run most PowerPC apps after the hardware migration to the Intel CPU commencing in 2007.
Sims 2, released in 2005, would have for sure been written in PowerPC code. And an expansion pack for Sims 3 released later, may still contain PowerPC code in it or its installer application.
Due to the expiration of Apple's license to use the code underlying Rosetta, all versions of OS X since the release of Lion (and Mt. Lion and Mavericks) do not contain Rosetta.
Either run the Windows version with Windows installed in virtualization on your Mac or install Snow Leopard Server into virtualization (so as to regain access to Rosetta) and see if Cider will operate in that environment.