Last December Miguel de Icaza blogged about a cool, cross platform, light weight 3D game engine that's very C# and friendly...
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Building 3D experiences and games using a high-level framework that works across all of the major platforms is now as easy as...
2d graphics
3d engine
animation
cross-platform
direct3d
game design
game development
game samples
mobile games
networking
nuget
opengl
physics
scene management
software development
urho3d
urhosharp
visual studio
xamarin