Within the ENAble project, GEOTEC is responsible for the development of a mobile game called NavApps. In the spirit of ENAble, NavApps is a geogame that aims to improve spatial literacy in secondary school students. It particularly focuses on reinforcing and improving spatial orientation, map interpretation and spatial reasoning. The game is a treasure hunting app that consists of 4 phases: school mapping, school exploration, treasure planting and treasure hunting. During the first phase, students and teachers map the different buildings, floors and rooms that will participate in the game in a dedicated web applications, by drawing them on a digital map using basic shapes. In the second phase, students explore the buildings by physically moving to a certain specified location, and indicating their arrival in the mobile game. Behind the scenes, the mobile app collects relevant data (i.e., WIFI fingerprints) to enable our proprietary indoor-positioning system, which is use during the next two phases. In the third phase, the students get the opportunity to hide an amount of treasures in the school, and describe and indicate them on the map. Finally, in the last phase, students search for treasures based on textual and spatial cues. Throughout the game, different wayfinding techniques (map-based, directions-based, proximity-based, etc.) and spatial assignments train the students’ spatial skills. Finally, to entice students to play the game, and continue playing it, NavApps uses gamification elements: a scoring system, rankings, collaboration and competition among players, etc.