Questo

Questo is a mobile application that transforms city exploration into interactive, self-guided games. Users solve puzzles and follow clues to discover landmarks and hidden gems in over 1,000 cities worldwide. It offers both outdoor quests and remote GeoQuests, allowing users to explore at their own pace and compete on a global leaderboard.

Questo is a mobile app that offers city exploration games, which aligns perfectly with the concept of a gamified travel app. It explicitly mentions 'themed city quests', 'location-based puzzles', 'interactive maps', and a 'global leaderboard', directly matching the must-have features.