That’s right, macOS Big Sur is macOS 11.0. Get the fastest and smoothest gaming performance with BlueStacks - the worlds most popular, safest and FREE Mobile Gaming Platform for Windows and Mac. macOS Big Sur features an overhauled look, and it’s such a big update that Apple bumped the version number to 11. A free and open-source application that emulates the original Microsoft Xbox game console, enabling people to play their original Xbox games on Windows, macOS. MacOS Big Sur, unveiled in June 2020 at WWDC, is the newest version of macOS, was released on November 12. Snow Leopard’s pricing reflects the lack of glitzy new toys: Mac OS X 10.5 Leopard users can upgrade to Snow Leopard for just 29. Which Macs are compatible with MacOS X 10.6 “Snow Leopard”? Apple states that all Intel-based Macs with at least 1 GB of RAM, 5 GB of available hard drive space, and a DVD drive - or access to one, as the case may be for the MacBook Air models - are capable of running MacOS X 10.6 “Snow Leopard”. It is only compatable with PC and Linux right now.
Long answer: There is basically only one emulator for the PS3 right now and that is rpcs3.
How to play PlayStation 3 games on a Mac – Quora.