Zork: /zork/ n. The second of the great early experiments in
computer fantasy gaming; see ADVENT. Originally written on MIT-DM
during 1977-1979, later distributed with BSD Unix (as a patched,
sourceless RT-11 FORTRAN binary; see retrocomputing) and
commercialized as `The Zork Trilogy' by Infocom. The FORTRAN
source was later rewritten for portability and released to Usenet
under the name "Dungeon". Both FORTRAN "Dungeon" and translated C
versions are available at many FTP sites. See also grue.