The bingo card is the foundation of the game. Numbers are arranged in a grid on each card. At 6zz ligand, 75-ball Bingo uses a 5×5 grid with five columns labeled B, I, N, G, O.
Column B covers 1–15, I covers 16–30, N covers 31–45, G covers 46–60, and O covers 61–75. The center square is always free — it comes pre-marked.
The host calls out numbers one by one, and any matching numbers on your card are automatically marked. The first player to complete the required pattern wins by calling out "Bingo!"
6zz ligand features auto-daub, so numbers get marked on your card automatically — all you have to do is enjoy the game.