Yes. It is Possible!

Building an Android app using .NET framework

Yes, you read the right. Apart from building windows app you can also build Android app using .NET framework. So, here I am going to tell which software you can use for it.

Visual studio makes it easy to build apps for Android. You can build your app using C# and .NET framework, HTML and JavaScript, C++.To build an app you can use Xamarin in visual studio.

 To get started, install Visual Studio 2015, select the Custom option in the installer, and check the box under Cross Platform Mobile Development > C#/.NET (Xamarin). You can also start with the Xamarin Installer, which is required to install Xamarin for Visual Studio 2013.

If you already have Visual Studio 2015 installed, run the installer from Control Panel > Programs and Features and select the same Custom option for Xamarin as above.

When you’re done, project templates appear in the New Project dialog box. The easiest way to find Xamarin templates is to just search on "Xamarin."

Xamarin exposes the native functionality of Android as .NET objects. Thus your apps have full access to native APIs and native user controls, and they’re just as responsive as apps written in the native platform languages.

When you’re ready to run your app and see how it looks, you can use the Visual Studio Emulator for Android or the Android SDK emulator. You can also use tethered Android devices directly.

So give Xamarin a try – download the trial version and give it a shot. Build your android apps with no knowledge on Android platform or the way it works.

Building games using .NET framework

People enjoy new games and let me tell you that you can also build a cross-platform game or immersive graphical app for android, iOS and windows using visual studio tools for unity. It’s a popular cross-platform game/graphics engine and development environment for apps that run on iOS, Android and other platforms.

What actually unity is?

Unity is a 2D/3D engine and framework that gives you a system for designing game or app scenes for 2D, 2.5D and 3D. Unity supports all major 3D applications and many audio formats, and even understands the Photoshop .psd format so you can just drop a .psd file into a Unity project. Unity allows you to import and assemble assets, write code to interact with your objects, create or import animations for use with an advanced animation system, and much more.