"The Incomplete Works of Infocom, Inc." Catalog:

ZORK III: The Dungeon Master is the test of your wisdom and courage. Your odyssey culminates in an encounter with the Dungeon Master himself. Your destiny hangs in the balance. ADVANCED LEVEL

Package Blurb:

An old, oddly youthful man turns toward you slowly. His long, silver hair dances about him as a fresh breeze blows. "You have reached the final test, my friend! You are proved clever and powerful, but this is not yet enough! Seek me when you feel yourself worthy!"

ZORK III: THE DUNGEON MASTER draws you into the deepest and most mysterious reaches of the Great Underground Empire. Nothing is as it seems. And the one responsible for the shadow and darkness - the Dungeon Master - embodies the greatest mystery of all.

In this test of wisdom and courage, you will face countless dangers. But what awaits you at the culmination of your odyssey is well worth risking all.