This is an incomplete list of Magi-Nation sites. If you want to have your site listed here, Email Me!
The new home of the official card images, storyline, forums, and lots of other MN goodies. Probably the most complete site on the net.
Watch episodes of the Magi-Nation cartoon here
Now dominated by the cartoon, the site still has forums and an online game (though I am not sure it still works).
Incomplete, and oriented toward the cartoon and Gameboy game. But it provides a good place for stable content.
A collection of pages for the gameboy game that I found.