Zork III: The Dungeon Master on the Commodore 64 is Infocom’s more introspective finale to the original trilogy, shifting from treasure-hunting to a series of tests meant to prove you’re worthy of becoming the new Dungeon Master of the Great Underground Empire. It’s packed with clever, often more abstract puzzles and a slightly more serious, mystical tone, as you explore strange new areas and face trials that feel like a graduation exam for veteran adventurers.