CP/M was a popular computer operating system in the 1970s and 1980s.

1982
A voice says you have passed all tests but one. Survive the horrors of the dungeon and you earn your reward.

1981
Enter the Great Underground Empire once again on a quest to defeat the wizard of Frobozz.

1980
Travel through the Great Underground Empire to find the Nineteen Treasures of Zork.


1977
It was created by Will Crowther in 1975 and 1976, and expanded in 1977 by Don Woods. Navigate a maze of caverns to find treasure.