Since its release in the United States on July 6, Pokemon Go has quickly become a cultural phenomenon.

In the first week, the mobile game attracted nearly 21 million users, according to data from Survey Monkey, making it the most popular app in US history.

As a result, the nature of the game is driving swarms of players to unsuspecting churches, businesses and other landmarks. But as it grows in popularity, priests, youth groups and others are quickly finding opportunities to evangelise young people.