Nintendo - Official site. Provides information and features. - http://www.nintendo.com/gamemini?gameid=m-Game-0000-1238
GameFAQs - Includes information, reviews, FAQs, guides, codes, secrets, and a message board. - http://www.gamefaqs.com/portable/gbadvance/data/563040.html
eLook - Provides passwords and hints for the Game Boy Advance version. - http://www.elook.org/games/cheats/gba/448.shtml
GameSpot - Provides information, news, and hints. - http://www.gamespot.com/gba/rpg/yugiohtheeternalduelistsoul/index.html