Meet the Man Who’s Spent $70,000 Playing a Mobile Game

Sony’s role-playing game “Fate/Grand Order” takes up most of 31-year-old Daigo’s time

Sony’s mobile role-playing game “Fate/Grand Order” takes up most of 31-year-old Daigo’s time—and a lot of his money: His in-game purchases total more than $70,000. It’s worth it, he says. Devotees like Daigo have made “Fate/Grand Order” Sony’s most profitable game ever.
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Sony Corp.’s music unit is set to earn operating profit of more than $1 billion this fiscal year, helping drive the conglomerate to record results. The music unit’s secret weapon: a mobile game called “Fate/Grand Order.”

Ace Research Institute analyst Hideki Yasuda estimates that revenue from the game is likely to top $1 billion in the year ending in March—meaning it brings in an average of more than $2.5 million every day. The game is free to download, but players enthralled by its high-end graphics and storytelling can...