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HTML

              
                <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r71/three.min.js"></script>
<script src="LotsOCubes.js"></script>
              
            
!

CSS

              
                 body {
            background-color: #000000;
            margin: 0;
            overflow: hidden;
        }
        canvas { width: 100%; height: 100% }
              
            
!

JS

              
                /**
 * Created by RebelMoogle on 15.09.2015.
 */
var camera, scene, renderer;
var geometry, material;
var meshes = [];

var materials = [];

var raycaster = new THREE.Raycaster();
var mouse = new THREE.Vector2(),
    offset = new THREE.Vector3(),
    INTERSECTED, SELECTED;

var timeClock = new THREE.Clock();


var init = function     () {

    camera = new THREE.PerspectiveCamera( 75,  window.innerWidth / window.innerHeight, 0.1, 10000 );
    camera.position.z = 1000;


    var NumberOfMeshes = 20;


    scene = new THREE.Scene();

    geometry = new THREE.BoxGeometry( 100, 100, 100 );
    material = new THREE.MeshPhongMaterial( { color: 0x008603, specular: 0x666666, emissive: 0x000000, shininess: 10, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } );
    materials.push(material);
    var MoveBy = 100;
    var StartPos = - (NumberOfMeshes * MoveBy / 2);

    for(var x = 0; x < NumberOfMeshes; x++)
    {
        for(var y = 0; y < NumberOfMeshes; y++) {
            var mesh = new THREE.Mesh(geometry, material);
            mesh.position.x = StartPos + MoveBy * x;
            mesh.position.y = StartPos + MoveBy * y;
            mesh.castShadow = true;
            mesh.receiveShadow = true;
            meshes.push(mesh);
        }
    }

    meshes.forEach(function (item, index, array)
    {
        scene.add(item);
    });

    geometry = new THREE.PlaneGeometry(20000, 20000, 8, 8);
    material = new THREE.MeshPhongMaterial( { color: 0xFFECF3, specular: 0x666666, emissive: 0x000000, shininess: 10, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } );
    var plane = new THREE.Mesh(geometry, material);
    plane.castShadow = true;
    plane.receiveShadow = true;
    plane.position.z = -10;

    scene.add(plane);

    scene.add(new THREE.AmbientLight(0x404040));
    var sun = new THREE.DirectionalLight(0xFFF9D4, 0.8);
    sun.position.set(300,150,500);

    sun.castShadow = true;

    sun.shadowBias = -0.00022;
    sun.shadowDarkness = 0.5;

    sun.shadowMapWidth = 2048;
    sun.shadowMapHeight = 2048;

    sun.shadowCameraRight    =  NumberOfMeshes*101;
    sun.shadowCameraLeft     = -NumberOfMeshes*101;
    sun.shadowCameraTop      =  NumberOfMeshes*101;
    sun.shadowCameraBottom   = -NumberOfMeshes*101;

    scene.add(sun);

    // add materials
    AddMaterials();

    renderer = new THREE.WebGLRenderer({antialias: true});
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.setClearColor( 0xFFECF3 );
    renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.sortObjects = false;

    renderer.shadowMapEnabled = true;
    renderer.shadowMapType = THREE.PCFSoftShadowMap;


    document.body.appendChild( renderer.domElement );

    renderer.domElement.addEventListener( 'mousemove', onDocumentMouseMove, false );
    //renderer.domElement.addEventListener( 'mousedown', onDocumentMouseDown, false );
    window.addEventListener( 'resize', onWindowResize, false );
};

var animate = function () {

    var delta = timeClock.getDelta();
    requestAnimationFrame( animate );
    meshes.forEach(function (item, index, array)
    {

        //item.rotation.x = (item.rotation.x + index * 0.01* delta)%360;
        if(item.position.z > 0)
        {
            item.position.z -= 100.0 * delta;
        }

    });

    renderer.render( scene, camera );

};

function AddMaterials()
{
    materials.push(new THREE.MeshPhongMaterial( { color: 0x2EB82E, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x004700, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x006464, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x228A8A, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x003535, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0xA74C00, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0xE68739, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x592800, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0xA70000, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0xE63939, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));
    materials.push(new THREE.MeshPhongMaterial( { color: 0x590000, specular: 0x666666, emissive: 0x000000, shininess: 20, shading: THREE.SmoothShading, opacity: 0.9, transparent: false } ));

}

function onWindowResize() {

    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();

    renderer.setSize( window.innerWidth, window.innerHeight );

}

function onDocumentMouseMove( event )
{

    event.preventDefault();

    mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
    mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;

    //

    raycaster.setFromCamera( mouse, camera );

    var intersects = raycaster.intersectObjects( meshes );

    if ( intersects.length > 0 )
    {
        INTERSECTED = intersects[ 0 ].object;
        if(INTERSECTED.position.z <= 0)
        {
            INTERSECTED.material = materials[(materials.indexOf(INTERSECTED.material) + 1) % materials.length];
        }
        INTERSECTED.position.z += 10;
    }

}



init();
animate();

              
            
!
999px

Console