EA says it plans to release four or five games a year from the new studios in each of the 2009/10 and 2010/11 financial years.
Bioware is the maker of a series of critically acclaimed and best-selling role-playing games, including Star Wars: Knights of the Old Republic and the Baldur's Gate series.
Meanwhile, its science fiction game Mass Effect is being published next month by Microsoft.
And the Pandemic team makes action games such as Mercenaries, Star Wars Battlefront and Full Spectrum Warrior.
