» GameFAQs
   Includes information, FAQs, guides, cheats, reviews, downloads, and a message board.
   http://www.gamefaqs.com/portable/gbadvance/data/914720.html

» GameSpot
   Includes information, news, screenshots, links, previews, and a review.
   http://www.gamespot.com/gba/action/sonicbattle/

» Open Site
   Contains information and review overviews.
   http://open-site.org/Games/Video_Games/Platform/Sonic_the_Hedgehog_Series/Sonic_Battle/

» Sonic Battle X
   Provides information, forums, guides, downloads, and links.
   http://www.planetnintendo.com/sonicbattle/

» nGaming
   Includes a collection of cheats.
   http://www.ngaming.co.uk/cheats/1680.php