Pokémon Go generated an estimated $950 million in revenues in 2016

"Pokémon Go generated an estimated $950 million in revenues in 2016, according to a report by market researcher App Annie.
Niantic Labs launched Pokémon Go on July 6, 2016, and it became a smash hit. Within a couple of months, Niantic announced that it had been downloaded more than 500 million times.
The game got people off the couch and prompted them to walk around outside in search of Pokémon creatures. It flooded parks and other landmarks with players, and some of them made in-app purchases of items such as Pokémon balls so that they could keep on playing."

Source:  VentureBeat, reporting data from App Annie, 17th January 2017