nethack: /net'hak/ n. [Unix] A dungeon game similar to rogue
but more elaborate, distributed in C source over Usenet and very
popular at Unix sites and on PC-class machines (nethack is probably
the most widely distributed of the freeware dungeon games). The
earliest versions, written by Jay Fenlason and later considerably
enhanced by Andries Brouwer, were simply called `hack'. The name
changed when maintenance was taken over by a group of hackers
originally organized by Mike Stephenson. There is now an official
site one at `http://www.nethack.org/'. See also moria, rogue,
Angband.