CNET GLOSSARY: Terms for the techie
A virtual environment, either text based or involving 3-D graphics, in which users adopt a character (also called an avatar) and interact in real time. Most MUD games involve some level of role playing, where characters adopt personas from books or medieval times, for example. A MUD can be accessed via Telnet, with a MUD client, or via a Web site. The acronym originally stood for Multi-User Dungeon.
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