A Big Bank Duel is a special type of Duel that is played with special Decks. At the start of a Big Bank Duel, the "Big Bank" Field Spell Card is activated, reducing both players' Life Points to 0. To win a Big Bank Duel, a player must increase their Life Points all the way up to 1,000,000, which is why Big Bank Decks are composed of cards that increase Life Points extremely quickly. When a player loses Life Points, the Life Points are stored in the Big Bank as Bank Counters. By performing a special action, all the Life Points in the Big Bank will be awarded to one of the players. Cards in Big Bank Duels often have appearances related to money and coins.

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