I found today's project from Egor Bogatov merges a couple cool things, HoloLens and UrhoSharp
UrhoSharp is a lightweight Game Engine suitable for using with C# and F# to create games that run on Android, iOS, Mac, Windows and Unix. The game engine is available as a portable class library, allowing your game code to be written once and shared across all platforms. UrhoSharp is powered by Urho3D (http://urho3d.github.io/), a game engine that has been under development for more than a decade.
To help developers get up and running quickly with UrhoSharp we are providing a set of project templates for Visual Studio.
Project Information URL: https://marketplace.visualstudio.com/items?itemName=EgorBogatov.UrhoSharpforHoloLens
Project Download URL: https://marketplace.visualstudio.com/items?itemName=EgorBogatov.UrhoSharpforHoloLens
Project Source URL: https://github.com/xamarin/urho-samples/tree/master/HoloLens