Just finished the Toei Yu-Gi-Oh! anime, which most people call Season Zero... I liked it a lot!
I know the Duel Monsters craze was a money pit that they just had to dive into, but I still really love the King of Games plotline, and how Yugi was a pro at not just Duel Monsters, but also Capsule Monsters, Poker, chicken, yo-yos, and even simple games of chance... I'd like to see something that combines that concept with Ultimate Survivor someday.
Went straight from that into the Duel Monsters anime, and... I'm not enjoying it as much. As someone who plays the card game, all the blatant rule-breaking is annoying... And as a Season Zero fan, I'm really begging for an episode here and there to change up the game a little, or at least give some more "filler" of the gang hanging out. But no, it's Duel Monsters all day, every day!