Wikipedia
MorgenGrauen
MorgenGrauen, abbreviated MG, is a German-language MUD, a text-based online role-playing game, founded in 1992 and opened to the public in 1993. It is noted as popular in the MUD world, described at times as having an average of around 100 players online per day, with some days seeing 220 players. It bills itself, and has been noted by others, as the world's largest German-speaking MUD.
Its name means "Dawn", or specifically and literally "morning-gray", the dawn twilight.