Z-Day: Hearts of Heroes is an Android app developed by FunPlus International AG (Bahnhofstrasse 2，6300 Zug, Switzerland). Others apps created by FunPlus International AG are: Guns of Glory, Call of Antia, King of Avalon, Misty Continent: Cursed Island, Stormshot.

Z-Day: Hearts of Heroes first became available on 11 Jul 2018. It is estimated that Z-Day: Hearts of Heroes has been downloaded between 10000000 and 50000000 times from the Play Store.