1972 - Alto Trek probably first networked game nope.. 1972 is WAY off. Docs at http://bitsavers.org/pdf/xerox/alto/trek21.pdf Trek was developed at the Univ of Rochester, who would not have gotten any machines as part of the university grant til the late 70's. 1974 - MazeWar, probably second networked game ? XNS/PUP, right? PUP, not XNS. Closer to being the first networked game (but NOT on the Alto) http://www.digibarn.com/collections/games/xerox-maze-war/index.html IMLAC version predates it, 76-77 at PARC