Not exactly Zork 1. Zork was originally written on MIT mainframes, but when they decided to start Infocom and release the game for profit they couldn't get it a

Not exactly Zork 1. Zork was originally written on MIT mainframes, but when they decided to start Infocom and release the game for profit they couldn't get it all to fit on the personal computers of the time, and so they split it into 3 parts. Zork 2 had the coal mine and the Bank of Zork, I think, and Zork 3 had the endgame. They then added some extra stuff to Zork 2 and 3 that wasn't in the original mainframe version. The history of the source code is interesting. It was called Zork and written in MDL. At some point they renamed it to Dungeon, but then a little while later named it back to Zork. During the time it was called Dungeon, a DEC engineer logged into their system (open to the world on purpose so people could play the game) but instead of playing the game copied the source code off. Then they translated the game into Fortran so they could run it on PDP-11s. This source code is the descendant of that translation.