Orbis is a geolocation-based app that helps you to explore an area systematically.
Within a circular region of your choice, Orbis will choose some points for you that you can collect by visiting them. A point can be a boring info sign or the Eiffel Tower. You never know. To make exploration more exciting, Orbis will hide these points from you except for a single one that is closest to your current location.
If you manage to get within range of that point, you can collect it. Once a point is collected, a portion of the region will be uncovered and a new nearest point displayed. Collect all points to fully uncover the map and to explore your area on foot or by bike.