Epic Games, the publisher, and developer of Fortnite Battle Royale has chosen not to use the Androids official repository for apps, the Google PlayStore. Android is the only mobile platform that allows apps to be installed without using the official Appstore, also known as sideloading. The 30 percent store tax is a high cost in a world where game developers 70 percent must cover all the cost of developing, operating, and supporting their games. Android Lollipop is the latest version of Android that does not have permission systems exposed to the end-user.”]
Source: https://hackercombat.com/fortnites-accidental-revelation-of-androids-security-weakness/