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Synonyms: multi-user dungeon, multi-user dimension, multi-user domain
See also: RPG
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MUD is a multiplayer real-time virtual world, usually text-based.[1][2][3] MUDs combine elements of role-playing games, hack and slash, player versus player, interactive fiction, and online chat. Players can read or view descriptions of rooms, objects, other players, non-player characters, and actions performed in the virtual world. Players typically interact with each other and the world by typing commands that resemble a natural language.

Traditional MUDs implement a role-playing video game set in a fantasy world populated by fictional races and monsters, with players choosing classes in order to gain specific skills or powers. The objective of this sort of game is to slay monsters, explore a fantasy world, complete quests, go on adventures, create a story by roleplaying, and advance the created character. Many MUDs were fashioned around the dice-rolling rules of the Dungeons & Dragons series of games.

Such fantasy settings for MUDs are common, while many others have science fiction settings or are based on popular books, movies, animations, periods of history, worlds populated by anthropomorphic animals, and so on. Not all MUDs are games; some are designed for educational purposes, while others are purely chat environments, and the flexible nature of many MUD servers leads to their occasional use in areas ranging from computer science research to geoinformatics to medical informatics to analytical chemistry.[4][5][6][7]



As per Wikipedia, MUSH is a text-based online social medium to which multiple users are connected at the same time, and a backronym variation on MUD most often expanded as Multi-User Shared Hallucination, though Multi-User Shared Hack, Habitat, and Holodeck are also used.[8]


According to information from Wikipedia, TinyMUCK or, more broadly, a MUCK, is a type of user-extendable online text-based role-playing game, designed for role playing and social interaction. Backronyms like "Multi-User Chat/Created/Computer/Character/Carnal Kingdom" and "Multi-User Construction Kit" are sometimes cited, but are not the actual origin of the term; "muck" is simply a play on the term MUD.[9]


Also according to Wikipedia a MOO ("MUD, object-oriented") is a text-based online virtual reality system to which multiple users (players) are connected at the same time.

The term MOO is used in two distinct, but related, senses. One is to refer to those programs descended from the original MOO server, and the other is to refer to any MUD that uses object-oriented techniques to organize its database of objects, particularly if it does so in a similar fashion to the original MOO or its derivatives.[10]

Fandom Examples


  1. ^ See MUD Wikipedia page for more Informations
  2. ^ Bartle, Richard (2003). Designing Virtual Worlds. New Riders. pp. 9–10, 741. ISBN 978-0-13-101816-7. [pp. 9-10] TinyMUD was deliberately intended to be distanced from the prevailing hack-and-slay AberMUD style, and the "D" in its name was said to stand for "Dimension" (or, occasionally, "Domain") rather than "Dungeon;" this is the ultimate cause of the MUD/MU* distinction that was to arise some years later. [pp. 741] The "D" in MUD stands for "Dungeon" [...] because the version of ZORK Roy played was a Fortran port called DUNGEN.
  3. ^ Hahn, Harley (1996). The Internet Complete Reference (2nd ed.). Osborne McGraw-Hill. pp. 553. ISBN 978-0-07-882138-7. [...] muds had evolved to the point where the original name was too confining, and people started to say that "MUD" stood for the more generic "Multi-User Dimension" or "Multi-User Domain".
  4. ^ Hansen, Geir Harald (2002-07-31). A Distributed Persistent World Server using Dworkin's Generic Driver (PDF) (Cand. Scient. thesis). University of Oslo. Retrieved 2010-04-14.
  5. ^ Boring, Erich (1993-12-03). PangaeaMud: An Online, Object-oriented Multiple User Interactive Geologic Database Tool (PDF) (Master's thesis). Miami University. Retrieved 2010-05-03.
  6. ^ Cruickshank, Don; De Roure, David (2004). "A Portal for Interacting with Context-aware Ubiquitous Systems". Proceedings of First International Workshop on Advanced Context Modelling, Reasoning and Management: 96–100. CiteSeerX Retrieved 2010-10-14.
  7. ^ Schaefer, Dominik; Mardare, Cezarina; Savan, Alan; Sanchez, Miguel D.; Mei, Bastian; Xia, Wei; Muhler, Martin; Ludwig, Alfred; Schuhmann, Wolfgang (2011-02-17). "High-Throughput Characterization of Pt Supported on Thin Film Oxide Material Libraries Applied in the Oxygen Reduction Reaction". Analytical Chemistry. 83 (6): 1916–1923. doi:10.1021/ac102303u. PMID 21329337. Programs in LPC programming language were developed to perform the following tasks: First, each set of CVs was separated into single CVs, and each of them were plotted. An average CV from all the CVs in one set was calculated and plotted as well. All images belonging to one set of CVs were combined into short animated movies to visualize the changes over time. The graphs of the averaged CVs from all measurement points within a line scan were combined into an animation for demonstrating the systematic changes along each of the Pt stripes. After that, specific parameters were extracted from each CV (see below). These parameters and some derived values were tabulated and plotted versus the x-coordinate of the measurement point. Thus, different graphs for each line scan were created showing the changes in specific properties along the thickness of the Pt stripe. The combined tabulated data for each wafer was then used to plot a 3D image of several parameters vs substrate composition and nominal thickness. The LPC programs were compiled using LDMud (V3.3.719).
  8. ^ See more in MUSH - Wikipedia Article
  9. ^ See more information on TinyMUCK - Wikipedia Article
  10. ^ MOO - Wikipedia Article