I believe this would be the most successful Western developed mobile game in Japan by an astronomical margin.
Japanese mobile games also are gigantic money makers. The Japanese mobile app market is bigger than the US's mobile app market despite Japan having a notably smaller population.
At its height, the top grossing mobile game in Japan was estimated to be making around $4.2 million per day. The #1 spot is usually at least $2-$3 million per day.
Source: https://www.appannie.com/apps/ios/top-chart/japan/overall/?device=iphone
Japanese mobile games also are gigantic money makers. The Japanese mobile app market is bigger than the US's mobile app market despite Japan having a notably smaller population.
At its height, the top grossing mobile game in Japan was estimated to be making around $4.2 million per day. The #1 spot is usually at least $2-$3 million per day.
Source: https://www.appannie.com/apps/ios/top-chart/japan/overall/?device=iphone