Warmer

spin the world. tap a country. get warmer.

a hidden country on a spinning globe; every wrong guess glows hotter the closer it is, and the rings of your misses cross on the answer

Each colour is the great-circle distance from the centre of your guess to the centre of the hidden country. So one miss says the answer sits somewhere on a ring around it; two or three rings cross in one place. GPS and earthquake location work the same way. Borders here are simplified, about half a degree per corner.

Concepts: maps, geometry, information, measurement, trilateration.

An interactive you play with one thumb, on Wundr.