How old do I have to be to use a Nintendo Account with Fire Emblem Heroes? 【Updated: November 09, 2021 09:08】 You must be at least 13+ to use this game with a Nintendo Account. Related articles Can I play Fire Emblem Heroes offline? [iOS]What operating systems support this application? What kind of application is Fire Emblem Heroes? What languages are supported? Can I play Fire Emblem Heroes for free?