Phone bingo
Tap a square when it is called; tap again to clear it. Your card and marks stay on this phone for this link, so a reload or a locked screen does not lose them. Nothing is sent anywhere.
Got a link from the host? Open it on your phone and your card appears here. Hosting? Open the bingo caller, start a game and press Phone cards.
How phone bingo works
One person hosts with the bingo caller on a phone, laptop or TV. They pick 1-75, the UK 1-90 game or their own word list, then press Phone cards, say how many cards the game has, and copy one link into the family group chat, a text message or a video call. Everybody who opens that link gets their own card on this page: a card number is drawn at random for that phone, and the card is dealt from the game's set number exactly as the card maker prints it. Players tap squares as the host calls them out; the free centre is already marked.
Each card says which one it is, for example Card 17 of 50 · set 482913. When someone thinks they have won, they press Bingo? to see which pattern their own taps make (a row, a column, a diagonal, four corners or the full card; on 90-ball tickets one line, two lines or a full house), shout, and read out the card number. The host types 17 into Check a card on the caller, which rebuilds card 17 and marks only the numbers or words really called. If the host picked a pattern for the round on the caller before making the link (an X, the outside frame, a postage stamp, a full card and so on), it is drawn above the card and Bingo? answers for that pattern first. Paper cards from the same set number play in the same game, so a grandparent with a printed card and a teenager on a phone can play side by side.
What this page cannot do
It cannot see the calls. Everything stays on the player's phone, so the Bingo? button only knows which squares were tapped: a mistapped square counts as marked until the player clears it. That is why the host's check is the one that decides.
Cards are drawn at random, so two phones can land on the same card. With 10 phones and 50 cards that happens in about 6 games out of 10; with 200 cards, about 2 in 10. Two identical cards simply win together, and the same goes for a phone and a printed card with the same number, since they are the same card. A player who notices a neighbour with the same card number can press Get another card, which draws a different number; their marks stay saved with the old card number in case they switch back by chance.
The whole game travels inside the link, after the # sign. Browsers never send that part to a website, and this page sends nothing at all, so there are no accounts, no game rooms and no record of who played. The price is length: phone links stop at 1,800 characters so they paste cleanly into any chat app. That fits any number game and a word list of about 110 eight-letter words or about 70 two-word phrases; for a longer list the caller asks you to shorten it. Picture cards cannot be sent, because the pictures never leave the device they were added on.
A card and its marks are remembered in this browser, separately for every link, so reloading the page or reopening the link later brings back the same card. Opening the link in a private window or another browser draws a new card.
For fun games with family, friends, classes and clubs. No money, no prizes handled here.