Guide
Rules make the border
One round may care about coastal cities, another about capitals, landlocked countries, islands, regions, or elevation. The challenge is reading the rule from examples fast enough.
City dossiers keep it concrete
Instead of drawing borders or naming countries from memory, Customs asks about actual cities. That keeps the game grounded in places players can learn and remember.
A clean fit for classrooms and trivia
The format teaches geography categories without requiring Street View, flags, or long sessions. Five dossiers are enough to make a satisfying daily round.