Ingress is an app which displays a different version of google maps. In the beginning of the game, you have to make a choice between two teams, the blue team and the green. The aim of the game is to conquer the most of the surface. You can do that by linking portals to each other. You have to move to the place in reality that’s marked in the game. Only then you can link the portals to each other. Everybody can play this game. The only thing you’ve got to do is to download it on your smartphone.
This app makes sure you get motivated to move to different places in the world. The portals are on places where you can find monuments. This make you learn a lot more about the world around you.
You can find some more information about ingress on: https://www.ingress.com
Or watch the Ingress movie: https://www.youtube.com/watch?feature=player_embedded&v=2lbFxub2A-I