Bingo still centers on marking cards, calling numbers, and spotting patterns,...

https://casinocrowd.com/what-is-national-bingo-day-and-why-do-operators-mention-it/

Bingo still centers on marking cards, calling numbers, and spotting patterns, just as it always has. What’s changed is where you play. Once a game for halls filled with chatter and clinking glasses, bingo now fits in your pocket