Dark Hole Yu Gi Oh! Cards Price Guide Sports Card Investor So, Idk anything about Yu Gi Oh. I just picked these up at a thrift store because I thought they looked cool. They all have 1996 date on the bottom. How do I tell 12 Most Valuable Yu Gi Oh! Cards Worth Adding to Your Deck dpa) A pile of YuGiOh cards pictured in Frankfurt, Germany, 15 July 2004. YuGiOh comes from Japan and debuted in 1996 as a comic book series about a game player with