Editing Online game (section)

===MUD===
{{Main|Multi-user dungeon}}
MUD is a class of multi-user real-time virtual worlds, usually but not exclusively text-based, with a history extending back to the creation of ''[[MUD1]]'' by [[Richard Bartle]] in 1978. MUD were the direct predecessors of [[Massively multiplayer online role-playing game|MMORPG]].<ref>{{cite book| last = Castronova| first = Edward| author-link = Edward Castronova| title = Synthetic Worlds: The Business and Culture of Online Games| publisher = University Of Chicago Press| year = 2006| isbn = 978-0-226-09627-8| pages = [https://archive.org/details/syntheticworlds00edwa/page/10 10, 291]| quote = [pp. 10] The ancestors of MMORPG were text-based multiuser domains (MUD) [...] [pp. 291] Indeed, MUD generate perhaps the one historical connection between game-based VR and the traditional program [...]| url = https://archive.org/details/syntheticworlds00edwa/page/10}}</ref>