All
three Myst games have so far been available for the Mac. True enough, Cyan likely sold far more PC versions than they did Mac copies, but one could always believe that if there was a Myst game there would also be a version for the Mac. When realMyst came out there was a delay in the release of the Mac version, but it did show up. Now there's a new addition to the Myst lineup and, this time, the Mac version may not show up at all.
Check It Out: Uru: Ages Beyond Macs? - Myst Developer May Blow Off Mac