We take travelers and locals on city discovery games, it works with any smartphone. During the game they solve riddles and challenges full of unexpected twists. Along with each clue, they unlock stories about the sights and area they are in as well as secret recommendations to get behind the scene and find sustainable spots. The trails are a playful, self-guided, affordable and instantly bookable way of exploring a city. A new kind of experience to escape the common tourist routes and create your own unique urban adventure.