This package ("LTOI I") was released by Activision (under the Infocom
label) in December 1991 for the IBM (Macintosh version: January 1992;
Amiga version: February 1992). CD-ROM versions (different CD-ROMs for PC
and Mac) followed in 1993.

It contained 20 games, complete with manual, hintbook (more or less
identical to the text in the InvisiClues) and maps. The IBM and Amiga
versions had $59.95 as RRP, the Macintosh version $69.95.

Due to Activision's financial situation, the package had to be produced on
a shoestring budget. The hintbook was full of typos; the manual left out
some vital information (the radio station ad for "Ballyhoo"; the "Moonmist"
letters). Some early packages did not include the parchment for "Zork Zero"
either.

The IBM packages lack some not-so-vital files (the MCGA/VGA graphics for
"Zork Zero", the boss key picture for the 3N interpreter). Early IBM
versions had read errors on the disks.