Custom cards
Build a bingo card from your own predictions. Anything goes as long as your league agrees it can be judged.

Call it before it happens. Stamp it when it does. First to bingo wins.
Predingo turns group banter into a game. Someone says “he’ll be late again”, someone else says “she’ll bring the dog” — put them on a card, share it with the league, and stamp squares as real life obliges.
Leagues have a close time. Standings are a bingo race: whoever completes a line first takes the top spot, everyone else ranks by stamps, and ties share the podium. Contested stamps go to a vote, so the honest players win.
Every closed league is frozen into a permanent result with its own history, so your record actually means something. Pick a puppy avatar, choose who can see your profile, and start calling it.
Build a bingo card from your own predictions. Anything goes as long as your league agrees it can be judged.
The first complete line wins. Everyone else ranks by score, and identical finishes share a rank. No coin flips.
Doubt a stamp? Raise a dispute and the league votes. Revoked stamps drop out; re-stamps get a fresh timestamp.