yu-gi-oh-logoKonami is claiming that a) it has sold over 22 billion Yu-Gi-Oh trading cards, and b) this is a world record, duly noted by Guinness as of July 7, 2009. I don’t know if this includes online cards, or only paper cards.

Considering that the last we heard any sales figures from Wizards, Magic had sold 1 billion cards … 18 months after the game was released in 1993 … I have a hard time believing that it’s still not ahead of Yu-Gi-Oh. But Wizards doesn’t release it’s sales figures, so we can’t know.

(source)