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Twelve questions on discharge, deltas and the drainage basins that shaped early civilisation.
Oceans & rivers · Medium · edited Aug 2, 2026
Near-identical tricolours, subtle crests and the details that give them away.
Flags & emblems · Hard · edited Jul 28, 2026
Identify nations from their outline alone. No labels, no borders, no mercy.
Borders & territories · Expert · edited Aug 5, 2026
How pressure gradients move half the planet's rainfall on a schedule.
Climate & weather · Hard · edited Aug 6, 2026
Sixty seconds, as many capitals as you can name.
Capitals & cities · Easy · edited Aug 4, 2026
The circulation loops that built the age of sail.
Climate & weather · Medium · edited Jul 19, 2026
Enclaves, exclaves and the strangest lines ever drawn on a map.
Borders & territories · Expert · edited May 11, 2026