kids like anything that has a TV series for it.
To clarify; you'd be surprised. You'd be surprised.
Here are the conditions, it seems, for a show that is also a game to be popular among kids;
-It must have big monsters. This is a must.
-It must be collectible. Seriously. This intrigues kids, and sucks in older people too. It wastes everyone money while giving the company money.
-It must be a game with depth. Seriously. Rolling a marble onto a metal card does take some skill, you know. And the game does have some depth. However, the depth required varies. Also, if you play Series I cards, I get to laugh at you.
-The voice acting must be questionable. This, again, is a truth.
-It must have at least one stupid part, if not more.
-They must make at least one big writing error. They did that in episode 2 of New Vestroia. I think they were drunk at that point, because it was a pretty big and obvious error.
-The show must have rules different from the game, or at least for the first season. Again, this is true. Just look at Yu-Gi-Oh!.
-It must have at least one crappy character design. Whether it's pop idols or freaking Weevil, there must be one!
-There *must* be at least one dragon. Everything's better with dragons. Penguins are also a plus. No one cares about bunnies, however. It must also have a fire-breathing... dinosaur.
-Finally, it must be on at some stupid early hour on Saturday morning. Anything before 1 PM is early. Sadly, that's when all of these shows air.
You are now educated. You may now sleep in peace. If you think about it, all of these things are true, even about parts in which the show must have some stupid stuff in it. @.@