Questo

Questo is the gamified travel app that helps tourists & locals discover cities using their smartphones.
Winner of Booking.com's Booster Labs, Questo helps travelers & locals explore cities on foot, discover tourist attractions and unique local stories by solving clues in a treasure hunt style.
People can play Questo in over 40 cities around the world including London, Paris, Berlin, Amsterdam, and Rome.
By following clues and solving puzzles, Questo helps you discover new places around the world while finding out their hidden stories. These are all part of what we call a ‘city game’, a mission of discovery that teleports you inside a fictional story where you’re the main character.