During the Google Developer Day at the Game Developers Conference 2017, Niantic Labs revealed that Pokémon Go has been downloaded 650 million times globally.
Although this is an incredibly big number, Niantic did say back in September that the game had reached 500 million downloads, so there's definitely a download curve in terms of downloads. Niantic surely won't mind, though, as these numbers are still huge, and Phil Keslin of Niantic Labs promises to keep updating the game with more and more content.
Could it get to a billion downloads?