Point-and click adventures have to be emulated as the genre has more or less died. The main development after text-adventures like Zork and the Hithhikers-guide to the Galaxy was the development of the Script Utility for Maniac Mansion (SCUMM), by Lucasfilm games. It was the engine for famous adventures like Monkey Island and Indiana Jones.

This can be run on a modern Mac (of Palm of PC) using Scumm VM, which also allows you to access adventures like Sam and Max which never appeared on an Apple machine.

Sam & Max.