after some checking i found this
Defunct
* Original HQ in San Mateo, California, moved to Redwood City in 1998.
* Origin Systems in Austin, Texas founded in 1983, acquired in 1992, closed in 2004.
* Bullfrog Productions in Surrey, England, founded in 1987, acquired in 1995, merged with EA UK and effectively closed in 2001.
* Black Box Games in Vancouver, British Columbia, founded in January 1983, acquired June 2002 merged with EA Canada.
* EA Baltimore in Baltimore, Maryland, established in 1996 as part of Origin, closed in 2000
* EA Seattle in Seattle, Washington, founded in 1982 as Manley & Associates, acquired January 29, 1996, closed in 2002
* Maxis in Walnut Creek, California, founded in 1987, acquired in June 1997, folded into Redwood Shores in 2004
* Westwood Studios in Las Vegas, Nevada, founded in 1987, acquired from Virgin Interactive Entertainment in August 1998, merged into EA Los Angeles in 2003.
* EA Pacific (known for a time as Westwood Pacific) in Irvine, California, formerly part of Virgin Interactive, acquired with Westwood in 1998, closed in 2003
* Kesmai (known also as GameStorm), founded in 1981, acquired in 1999, closed in 2001.
* DICE Canada in London, Ontario, started in 1998, acquired DICE fully 2 October 2006; closed DICE Canada studio hours later.
* EA Japan in Tokyo, Japan, closed due to consolidation; moved under EA Partners model
* EA UK in Chertsey, United Kingdom, moved to EA UK in Guildford
* EA Chicago in Hoffman Estates, Illinois, founded in 1990 as NuFX, acquired in 2004, closed November 6, 2007.
* Pandemic Studios in Los Angeles, California and Brisbane, Queensland, Australia, founded in 1998, acquired October 2007 from Elevation Partners, closed November 17, 2009.