Throughout gaming's rich and varied history, it's been surprisingly uncommon for genres to actually die. For example, even when 3D platformers were popularised by Super Mario 64 and Tomb Raider, its predecessor, the 2D platformer, still survives. One notable exception to this rule occurred when LucasArts or, as it was back then, LucasFilm Games, unleashed the first instalment of a franchise that's yet to be beaten in its field – The Secret Of Monkey Island.
The genre it obliterated was the text adventure. These used to be big business back in the days when our Sinclair Spectrums and Commodore 64s struggled to move a sprite from one side of the screen to the other, necessitating a healthy imagination and plenty of goodwill on the part of the gamer. Because of graphical limitations, good writing alone could make a game a stand-out classic, which is why the text adventure flourished.