Server-side Babylon.js

[JustMeSander]

This worked for me! (typescript) it requires https://github.com/stackgl/headless-gl 
Bit hackish but it works also with collision. 

GLOBAL.window = {};
GLOBAL.window.addEventListener = () => {};
GLOBAL.navigator = {};
GLOBAL.document = {};
GLOBAL.document.addEventListener = () => {};
GLOBAL.window.setTimeout = setTimeout;

export class HTMLElement {

}

var gl = require('gl')(10, 10, {})
var engine = new BABYLON.Engine({
    getContext: function() {
        return gl;
    },
    addEventListener: () => {}
});
var scene = new BABYLON.Scene(engine);
var scene.collisionsEnabled = true;
var camera = new BABYLON.FreeCamera('camera', BABYLON.Vector3.Zero(), scene);
var ground = BABYLON.Mesh.CreateGround('ground', 10, 10, 20, this.scene);

engine.runRenderLoop(function() { 
    scene.render(); 
});