Monodevelop IDE natvie for Ubuntu - when ctrl+c -ctrl-v your code of Unity3D(web player code for Mozilla Firefox on Ubuntu) ?

Monodevelop IDE natvie for Ubuntu - when ctrl+c -ctrl-v and compile your code of Unity3D ?
http://developer.ubuntu.com/get-started/monodevelop/

Unity3D it’s write in some of programing language.
Monodevelop it’s to write C# .net app.
Plugin for Mac (webplayer) have inside .net mono lin.
In what programing language it’s Unity3D write(web player) ?

Think unity3D (web player) it’s wrtie i some of programming language.
and mac version web player have inside mono lib.

SO wich porgraming language use a unity3D - WEB PLAYER ?
So you don’t use VIsual Studio ( alternatie to monodevelop) and you don’t use a C#… i don’t think so…