Android allows users to install apps from any source, not just the official Google Play Store. Sideloading apps can be a risky procedure if you don’t know what you’re doing, as you may end up installing malware on your device, thinking you’re getting a different type of app. Some developers could choose this way of offering popular apps to users, and that’s what Epic Games did with Fortnite until not too long ago. Developers can use the feature to beta test their apps before they hit the Play Store or installing custom apps they don’t necessarily want to share with others. Android users from regions where Google services might be banned could attempt to sideload apps from other sources.