https://undark.org/article/wilo-evans-broad-band/ LambdaMOO was different from the earliest MUDs, which were Tolkienesque fantasies -- hack-and-slash games for Dungeons & Dragons types with computer access, mostly college students. LambdaMOO was one of the first social MUDs, where people convened largely to play-act society, and what might have been "one of the first MUDs to be run by an adult," [co-creator Pavel] Curtis believes... Everybody comes through the Coat Closet the first time they visit LambdaMOO, entering the Living Room through a curtain of clothes, like children into Narnia. In between the textual rooms and objects they explore, there's a faster-moving flow of words, the coursing real-time chatter of LambdaMOO's other users. This is a Multi-User Domain: a chatroom and a world at once, a place where telling takes the place of being... [I]t's nearly impossible to describe to a modern computer user what that means, because although MUDs once made up 10 percent of internet traffic, their dominance was obliterated by the arrival of the visual, hyperlinked, page-based Web. To anyone weaned on images and clicked connections, every explanation sounds batty: A MUD is a text-based virtual reality. A MUD is a chatroom built by talking. A MUD is Dungeons & Dragons all around the world. A MUD is a map made of words. The science fiction writer Philip K. Dick once defined reality as "that which, when you stop believing in it, doesn't go away," and in that sense a MUD is a real place. But a MUD is also nothing more than a window of text, scrolling along as users describe and inhabit a place from words. Undark titled their piece "a mansion filled with hidden worlds: when the internet was young," describing the mansion's halls as "really just a string of code, where people once lived, and still do, in some way or another, as someone must, until the server winks out." I logged in a few times in 1997, so I'm probably in there too... The article describes reading a Usenet newsgroup about MUDs back in 1990. "Approximately half of the contributors thought it was a game; the other half vehemently and heatedly disagreed."