A starting point, a story, and a city that turns into a game board. Each stop opens when you reach it; you have to look around to find the answer — a carved date, a statue, a detail nobody notices.
Thirty-six hunts in six cities, for four ages — 4-6, 7-9, 10-12 and 13 and over; each hunt's page says which ones it serves. The level changes the riddles and the length of the route, on the same path. Little ones tap pictures instead of writing; older ones decode, calculate and find their way with a compass.
No account, no ads, and nothing leaves your phone: your location is only used to open the stops, on the device.