Booster 6 is a Japanese Booster Pack in the Yu-Gi-Oh! Official Card Game that was released on December 1, 1999. This set was sold only in Carddass vending machines.
Like other cards printed early on in the game, the cards have no printed set numbers, and lack the distinctive Eye of Anubis Hologram in the lower right-hand corner of each card.
Of the 40 cards in Booster 6, all but 9—"Boulder Tortoise", "Dragon Statue", "Garvas", "Ill Witch", "Kairyu-Shin", "Mechaleon", "Neck Hunter", "Rock Spirit", and "Spirit of the Winds"—have since been printed in the Yu-Gi-Oh! Trading Card Game.
Booster 6 contains 40 cards. Rarities are distributed as follows:
The set also contains six non-playable FAQ Cards.