Well, I guess the interactive fiction genre was basically invented by Infocom. Their titles (Zork, Starcross, Deadline, et.al.) tend to be pretty seminal.
True.. but I was more interested in non-Infocom games, as the Infocom games are fairly widely available for modern systems.
Thanks, though! :) -Gio -- AND NOW FOR A WORD (an IF blog): http://giomancer.wordpress.com/