Atlas-Quest is an app for people to gain a better geographical knowledge on a map. This app allows learning while playing an interactive and fun game. This app is great for both kids and adults. Locate the questioned city on the map by maneuvering the pin around the map. Use the zoom in/out to place the red pin as close to the center of the city. Points are awarded based on accuracy and time to respond. They are calculated based on a complex algorithm which compares your response time with other players. This is a great app that combines best of Machine Learning and Realtime-Database capabilities.