For WP7, the officially supported languages are C# and VB.NET. That being said, because it is just running Silverlight, you can try running any .NET language.

For WP7, the officially supported languages are C# and VB.NET. That being said, because it is just running Silverlight, you can try running any .NET language. For example, there are a few people running F# on Windows Phone 7. I haven't tried it myself, but here is a link to templates for game development with F# on WP7: http://sharp-gamedev.blogspot.com/2010/12/project-templates-for-f-games-on.html http://sharp-gamedev.blogspot.com/2010/12/project-templates-... Here's an article on building a WP7 app with IronRuby: http://msdn.microsoft.com/en-us/magazine/ff960707.aspx http://msdn.microsoft.com/en-us/magazine/ff960707.aspx While this isn't as fast as it could be, because you can't access Reflection.Emit to JIT method bodies to native code, it does show you can run Ruby in a WP7 app.