Pokémon GO

Pokémon GO has reached 500,000,000+ installs; the adventure game from Scopely Explore, Inc. is used by hundreds of millions of people. It polarises - 25% of ratings sit at the bottom of the scale despite a 52% five-star share.

Free to download, though in-app purchases run $0.99 – $99.99 per item. Content is rated Everyone. It needs Android 9 or newer. 996,965 people have left a written review.