The game was never released on Macintosh platform but according to wiki page:

" In 1988, a port was developed for the Macintosh. The 256 color graphics for the Macintosh port were quite advanced (easily surpassing the original Amiga version of the game). Unfortunately, the only color Macintosh model at the time was the Macintosh II, which was prohibitively expensive for a successful gaming platform. The Macintosh port was never released, but a working beta was completed before the development was cancelled."

Is there a still-working beta copy somewhere? I'd like to see it available on this site. Running emulator on my Centris 610 is slow as heck with either Amiga or DOS version.