The game uses GPS and Google Maps in order to create an augmented reality in which players travel in the real world in order to find and catch Pokémon. Real-life locations and landmarks, such as a local church, double as locations in the game. *The downside of this is that it can send anywhere from a few people to a stampede of people to a random place IRL, and some of those locations, unfortunately, happen to be people's homes. Read more...