MOO's and MUD's

I remember seeing, years ago when the internet was young, people sitting at the computer with all this text on the screen playing games. I guess it was exciting to them at the time because it was something new. I didn't know what it was. I didn't know much of anything about the computer back then.

Reading the wikis about MOO's and MUD's seems kind of complex. I admire the developers of these programs. One thing I did find interesting with MOO's is that "users can perform object oriented programming with the server, ultimately expanding how the server behaves to everyone." Now that sounds like the virtual world games where each player brings his own personality to influence how the game is played.