Zork

/zork/ n. The second of the great early experiments in computer fantasy gaming; see ADVENT. Originally written on MIT-DM during the late 1970s, 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.