Most of these LucasArts graphical adventure games were written using a game engine known as SCUMM (https://en.wikipedia.org/wiki/SCUMM https://en.wikipedia.org/

Most of these LucasArts graphical adventure games were written using a game engine known as SCUMM (https://en.wikipedia.org/wiki/SCUMM https://en.wikipedia.org/wiki/SCUMM) that was able to target different platforms, which was ported to the Mac and so ran on 68k and later PowerPC Macs. There is now an emulator that can play SCUMM games on almost any platform known as ScummVM (http://scummvm.org/ http://scummvm.org/).