This information comes from Nintendo’s Tatsumi Kimishima…

Fire Emblem Heroes became available in Hong Kong, Taiwan, Macao, Thailand, and Singapore as of November of last year, and this February marked the one-year anniversary of the application’s release. We have been able to keep our active users while expanding the user base, and sales have continued to grow without slowing. One might expect the Fire Emblem series to be most popular within Japan, but for Fire Emblem Heroes the share of overseas sales is steadily growing. Moving forward, we will work to continually expand on measures designed to excite consumers.