Microsoft's XNA Game Studio is a set of tools based on Microsoft's .NET framework. It is freely available. There are some redistribution restrictions that you will want to review if you plan to use this tool.
With XNA, you can develop for the following platforms:
- Windows PC
- Windows Phone
- Xbox 360
For further information on XNA, I recommend Microsoft XNA 4.0 Game Development Cookbook by Packt Publishing: https://www.packtpub.com/game-development/microsoft-xna-40-game-development-cookbook.