Thirty years ago, when multiple incompatible computer formats vied for dominance, there were as many cross-platform games as there were exclusives. Companies who could afford to port their software benefitted from a larger potential audience, resulting in Mac, DOS, and Apple II users having similar yet disparate experiences of games such as the Ultima series.
The modern benefit to such historical cross-pollination is that many classic Apple II games can still be enjoyed, albeit in alternative formats. For example, in the July episode of Open Apple , I mentioned a free version of Ultima IV  that requires DOSBox . (Several listeners recommended I instead run the game using Boxer , a DOS emulator specifically for the Macintosh.)
For a more turnkey approach to reliving the classics, I recommend two online distributors who have made games such as Ultima and Zork available again: Steam , and Good Old Games  (GOG). Unlike the remake of Ultima IV (or even ADG's non-profit remakes of King's Quest ), Steam's and GOG's offerings are not free for the taking — but these commercial products are designed to be run from a modern operating system, usually Windows XP or higher but occasionally for the Mac as well. How else can you easily and legally enjoy the Zork anthology for just $3.59 , or four classic LucasArts point-and-click adventures for $9.97 , in a native, offline environment?
If you're not sure which of these games to start with, you don't need to delve into old issues of Nibble  to find what critics of the age had to say. Modern reviews are still being published at Web site Pixelmusement under the title Ancient DOS Games  (ADG). Here's their review of King's Quest II :
They may not be identical with the Apple II games you remember, but these games are legitimate originals that have taken straight from the past to be enjoyed in the present. So… enjoy!