Sony claims that a group of hackers illegally created a huge amount of EverQuest II currency over the weekend, and it says the players caused the game's economy to suffer 20 percent inflation in just 24 hours before being caught.

According to Chris Kramer, director of public relations for EQ2 publisher Sony Online Entertainment, the players had, on Saturday, begun using their so-called "duping bug" to make large quantities of platinum, the game's currency. (A duping bug is a hack that exploits a weakness in online games' code to effectively create counterfeit currency or other goods.)