The land became chaotic when Maya & Merendez cross paths. Oh about Maya, she is everyone's nightmare. On the other hand, Merendez is the most selfish man who ever lived and he obsesses with power. Their conflict led the land to a division.
In order for you to be able to install this game, you need to enable (allow) installation of applications from unknown sources (Unknown sources) in the phone settings. Usually this item is in the Security section