Unity enters the mobile app store fray with its announcement of Unity Distribution Portal (UDP), enabling developers to reach beyond the Google Play store and publish on alternate app stores for Android devices.
The Unity Distribution Portal was created to help make publishing mobile games on alternative app stores that are on Android-based devices faster and easier for developers. UDP helps developers save time - basically submit your game and UDP automatically creates specific builds with all required SDKs in the background, saving you a substantial amount of time when publishing to multiple stores. Developers can access and share games easily from a single dashboard.
Learn more from Unity and watch the below tutorial on how to distribute with UDP:
This is great news! I can now rest easy to developing games for multiple platforms. Monogame seems good as well for cross-platforms.