Game Development/Publishing Companies
Official sites for companies that make and publish games. Note that these sites are not the same as official game sites, though sometimes they are hosted in the same place.
Typical Services/Sections:
Information on products, store, downloands (demos, patches), customer service
http://www.ionstorm.com
http://www.idgames.com
http://www.capcom.com
http://www.ea.com
http://www.rockstargames.com
http://www.nintendo.com
http://www.sega.com
http://www.atari.com
http://www.square-enix-usa.com
http://www.ubi.com
http://www.acclaim.com
http://www.codemasters.com
http://www.epicgames.com
http://www.blizzard.com
http://www.lucasarts.com
http://www.activision.com
http://www.interplay.com
http://www.xbox.com
http://www.argonaut.com
http://www.naughtydog.com