EverCrack

EverCrack, p.n. a derogatory nickname for EverQuest, so named because of the tendency of players of this game to become strongly addicted to playing it. [BAL]
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Addendum: Once believed to be more addictive than Magic: The Gathering (see Magic: The Addiction). [BAL]
Addendum #2: Because of this addictive nature that most MMORPGs seem to have, "crack" has usually been added to most of their names when being referred to pejoratively, such as "WarCrack" for World of Warcraft".