According to the Financial Times, the move marks the first time the Japanese video games maker has called upon prosecutors in Asia to help combat piracy.
Nintendo’s Korean unit filed the complaint today to the Seoul Central District Prosecutors’ Office, accusing some internet users of uploading pirated copies of software – and web operators of permitting the incidents.
"Nintendo will take further measures if copyright violations continue," the company said in a statement.
Nintendo only established a presence in the Korean market last year and began selling its DS Lite handheld games player in January. Sales reached 270,000 units in only four months.