1. Nintendo of America, Inc.
The Official Nintendo web page with codes, previews, contests, and interaction.

2. GameFAQs
Includes FAQs, walkthroughs, message boards, user submitted reviews, and codes for all console and computer platforms.
www.gamefaqs.com

3. Electronic Arts
Distributor for seven North American publishing companies including Accolade, DreamWorks Interactive, Intergraph, H3D Entertainment, and NovaLogic Inc.
www.ea.com

4. Blizzard Entertainment
The company creator of Diablo, Warcraft and Starcraft. Offers news, job opportunities, official press releases, and game information.
www.blizzard.com

5. GameSpy
News, reviews, previews, interviews, features, screen shots, and discussion forums.
www.gamespy.com