Even though it’s technically not an emulator, it fits the theme of this blog. Here’s a walkthrough. Years ago it was called “Windows Emulator,” but later it became Wine Is Not An Emulator. And it’s not – it doesn’t translate instructions, it just translates functions (“system calls”) from Windows to POSIX, which they call a “wrapper” (wraps the Windows software to intercept its Windows API calls).
Most games from the Windows-era of PC gaming (as in, pre-modern/pre-Steam-era, or roughly 1995-2005) can be run on Intel Macs (Macs made after ~2006) thanks to a compatibility layer called Wine.