Dragon Cards is a Chinese card game in the Yu-Gi-Oh! manga. The game involves collecting suits of Chinese Dragon cards and having them battle. In the first series anime, it is replaced with Dragon Block—a Mahjong game with near-identical rules. A player who loses the game has has their soul sucked into the soul-eating jar by the 25 dragons that appear in the game. The soul is fully digested over three months after being sealed. The cards and the pot have been bound with a sealing cord to trap their evil powers.