Join Ernie Hernandez, Duelist and organizer, for open play time. He will share his knowledge of the Yu-Gi-Oh! TRADING CARD GAME. Open play time is for 8-year-olds to 18-year-olds. Advanced Format. Konami rules. Bring your own deck of 40 cards minimum. Card trading is not allowed. Registration opens January 15. Preregistration required.