Reigns has sold more than 600,000 copies, primarily on iOS and Android.
The narrative game, which mixes a Tinder-style swiping mechanic with kingdom management, was released this summer and announced this sales milestone via itsofficial Twitter account.
Responding to a congratulatory tweet, developer Nerial added that the majority of sales were from the iOS and Android versions, although it has yet to clarify how many copies have been sold on Steam.
Develop has the full story.