A field game for the Endless Commerce & Dayglow road show
Mark a square when it happens in real time. No backfilling after the fact. Witnesses count.
BINGO = any row, column, or diagonal. Shout it. Everyone else buys coffee.
BLACKOUT = full card. Winner gets dinner picked and everyone owes a drink.
Points add up across the trip. Highest total at trip end takes the belt.