Children of Time
for me, not as a fact.
Like, I feel that way because I clearly have not seen enough YGO episodes.
Yes, perhaps you should watch the original YGO series. I mean, I haven't even seen a majority of it, but they go far deeper into the monsters than you might think.
And, in general, I see more people that play the YGO TCG than the Pokémon TCG. My friends and I have even agreed before that, when it comes to videogames, Pokémon trumps Yu-Gi-Oh, but when it comss to the TCG, Pokémon comes nowhere near Yu-Gi-Oh.
And at least YGO changes it's animé protagonist. >.>;
EDIT: @Kura - Agreed! d: