Previously I worked in ASP.NET MVC. I am using MVC from it's beta to Version 5 (latest). I want to do game development. I have a little knowledge of C#, ASP.NET ( I mostly do MVC).

I have made a very small game in Javascript months ago. I want to do Game programming. What kind of programming I can do to make my skill better.

I have a windows 8 phone but my Win7 PC didn't allow me to use for making thing for Windows 8. What kind of programming I do.

Do I need to make games for Android. Someone please guide me. One of person I met told me to learn Android programming for make my career better.

Is learning Java make my focus loose from C# and other microsoft technologies. I want to be expert. Can I become expert even I do Both C# & Java programming. I hear one time that If I concentrate on everything I will got nothing in my life.

So for now someone guide me. I am looking for make my skill so I can build my career. For game programming I need your help.

Thanks for read my post

Well it looks like you want to make games for mobile phones, right?

Obviously, you need a device to test your apps on. Since you have a windows phone, it would be cheaper to pick up a copy of windows 8 for pc than to buy an android device to test apps on...but the choice is up to you since android tablets are beginning to dip below 200 USD.

BUT...if you are looking to develop apps professionally then learning android would be the smart choice because android is currently more popular than windows phone.

Is learning Java make my focus loose from C# and other microsoft technologies

Java and C# are very similar. You shouldn't have to much trouble switching between them.

For greatest reach, Adobe AIR / Flash are your best bets. You'll find it very easy to pick up ActionScript (especially after working with JS), and you don't have to worry about portability or compatibility. Of course, performance will always be just a smidge below native code, but then again so will Java and JavaScript (AIR / Flash use many optimization techniques like JIT compilation these days so they're on par in terms of speed).