These cards predate the Yu-Gi-Oh! OCG release. This is a set of 39 cards from the "Yu-Gi-Oh! Carddass" card game, released in 1998-1999 alongside the Toei Yu-Gi-Oh! anime. Includes rare cards such as: Dark Knight Gaia Summoned Skull Meteor Black Dragon Thunder Nyan-Nyan These cards are approximately 25 years old. I will be listing many other Yu-Gi-Oh! cards. Please consider purchasing multiple items together. Returns and exchanges are not accepted after purchase to prevent swapping. They have been stored in a dark room, but some cards are in poor condition. Please confirm the condition through the photos and comments before purchasing. I will ship them with water damage protection. Thank you.