>>brayth+(OP)
A bit of context that's gone missing: In 1977, the Fortran source for Adventure, by Crowther and Woods, leaked from Stanford and starting making the rounds on PDP-10 magtapes. Zork, from MIT, came along shortly thereafter, and was seen as more than bit of MIT taking a slap at Stanford by saying, "Now, here's how to do this right. First, one creates a Dungeon Definition Language. ..."