not quite sure what you want to achieve.
i know there is a framework called unity that allow you to write 3D games with either C# or javascript, but the games are desktop oriented i'm not sure u can
addapt to browser but maybe u can, just check their website
https://unity3d.com/otherwise, there are few javascript framework that allow you to easily mockup web browser games such as Phaser.io / Melon.js ...
in both case you'll need to write code, either in C# or javascript