As part of the release of Zork Grand Inquisitor, Activision released Zork III as freeware. (Currently the links to download the game are dead at activision.com, but the game is available at numerous fan sites.) Add
Did You Know?
(From The New Zork Times Vol.3 No.2 Spring 1984)
Some statistics about Zork 3:
Apparent number of rooms (those seen by the player): 105
Number of rooms: 89 (The Royal Puzzle seems like 31 rooms, but
internally it's actually just one room)