Cheat Code Central
Started in 1997, Cheat Code Central features cheat codes and hints for games on 14 different gaming systems. In addition to game play aids, Cheat Code Central offers a variety of other content, including reviews, videos and a newsletter. Codes and hints on Cheat Codes Central are stored in an alphabetical database organized by system and game title.
GameFAQs
Sponsored by video game website GameSpot, GameFAQs collects guides, codes and various other game hints for every generation of gaming system. Arranged according to system and title, each game on the website features a dedicated page gathering codes, guides, reviews and specialized message board for fans of the title to share hints and tips.
IGN
In addition to the sites primary purpose as a source of gaming news and reviews, IGN.com maintains a site for the Nintendo GameCube, featuring previous articles, reviews and game hints. Both cheat codes and specialized guides can be found for hundreds of GameCube titles with more prominent titles featuring full IGN strategy guides and walkthroughs.