Fate/Grand Order was one of the highest-grossing free-to-play games of 2019, though it may be a less familiar title if you're primarily focused on Western trends.
Sensor Tower reports that the free-to-play RPG from Sony's Aniplex studio just passed $4 billion in lifetime player spending on the heels of its second-best year since its 2015 launch. The game generated $1.1 billion in 2019 alone, down only slightly from $1.2 billion last year. For comparison, its launch year only saw $110.7 million in revenue, though it was only out for half of 2015.

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