Entropia Universe (formerly known as Project Entropia), a popular MMORPG-style online virtual universe.
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Entropa, a satirical art installation depicting member countries of the European Union
Entropia Universe entered the Guinness World Records Book in both 2004 and 2008 for the most expensive virtual world objects ever sold.
Wirecard Bank has purchased a license from MindArk, the operators of the Entropia Universe virtual world, to operate a bank within the Entropia Universe, but has as of April 2009 not yet opened their virtual bank.