Definições - MMORPG

Glossary of Terms
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* Tabletop - A ‘conventional’ role-playing game; for the purposes of these articles, I’m specifically talking about traditionalist tabletop play. I’ll occasionally use the phrase ‘paper and pencil’, which means the same thing.
* CRPG - A console (or computer) role-playing game. Includes MMORPGs, JCRPGs, and others; with no further specificity, refers to games that are single-player (or very limited multi-player, vis Baldur’s Gate 2) and generally follow a single or a few major plot threads with varying degrees of linearity. Examples: Baldur’s Gate, Morrowind, Knights of the Old Republic
* JCRPG - A Japanese console RPG, usually a single-player, highly linear game, strongly focused on a single or a few major plot threads, that tends to have little or no player agency over major elements of story. Full examination of JCRPG conventions and artifacts is beyond the scope of this series, but it is a different beast compared to other CRPGs. Examples: Final Fantasy 1-10, Xenosaga, Shin Megami Tensei
* TRPG - A tactical console RPG, usually featuring a sizeable character party, large-scale combat, and little or no character development outside of a few core story characters. Examples: Disgaea, Final Fantasy Tactics, Shining Force
* MMORPG - Massive multiplayer online RPG. A ’shared world’ online game, with at least some persistant elements, featuring a large base of otherwise unconnected players. Examples: World of Warcraft, Everquest, Eve Online

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MMORPG (Massively Multiplayer Online Role-Playing Games)
Massively Multiplayer Online Role-Playing Games are played online over a network or the Internet by more than one player. Today's MMORPG can support several thousands players at once.

Fonte:
1 http://www.diepointyhat.com/?p=83
2 http://www.intel.com/products/glossary/body.htm