Pokemon GO, a game which changed the way we played games. In earlier days, everyone was saying that this game will break due to its inability to generate revenue. Later they updated the app with some in app purchases and in other ways of advertising.
As perp the Sensor Tower, game has crossed the $1 Billion mark in terms of revenue across all platforms. This accent in the revenue generation has led Pokemon GO to be titled as most successful game ever. It has managed to rack up $1 Billion in span of 11 Months.