chean: The original, native Mac versions on the other hand... even if you can find them somewhere, you'd need to set up an emulator like Sheepshaver to make them run at all on modern Macs, something which is much more complicated than emulating DOS (e.g. the emulator needs a ROM file extracted from a real '90s Mac to run; using a ROM that you didn't extract yourself is considered illegal AFAICR).
I tried Sheepshaver and Basilisk II, neither works for X-Wing or TIE Fighter on the Mac.
The *only* way to run either of those games is on a genuine Macintosh, running System 7 or Mac OS 8.