var game = new Phaser.Game(250, 400, Phaser.AUTO, null, { create: create, update: update, render: render });

​

function create() {

    //settings

    game.time.advancedTiming = true;

    game.physics.startSystem(Phaser.Physics.ARCADE);

​

    // create texture for sprite

    var boxTexture = game.add.graphics(0, 0)

                      .kill()

                      .beginFill(0x7a84fc)

                      .drawRect(0, 0, 40, 40)

                      .generateTexture();

​

    // create floor

    this.floor = game.add.sprite(0, 0, boxTexture);

    this.floor.scale.setTo(8, 1);

    this.floor.y = game.world.height - 80;

​

    game.physics.arcade.enable(this.floor);

    this.floor.body.immovable = true;

​

    // create box group

    this.boxGroup = game.add.physicsGroup(Phaser.Physics.ARCADE);

​

    this.boxGroup.x = 100;

    this.boxGroup.y = 100;

​

    // add 3 box

    for (var i = 0; i < 3; i++) {

      var box = game.add.sprite(0, 0, boxTexture);

      box.y = i * (box.width + 10); // + margin

​

      this.boxGroup.add(box);

    }

​

    //

    this.boxGroup.setAll('body.velocity.x', 0);

    this.boxGroup.setAll('body.velocity.y', 500);

 }

 function update() {

    game.physics.arcade.collide(this.boxGroup);

    game.physics.arcade.collide(this.floor, this.boxGroup);

 }

 function render() {

    game.debug.body(this.floor);

​

    this.boxGroup.forEachAlive(function(box) {

      game.debug.body(box);

    }, this);

​

    game.debug.text(game.time.fps, 5, 15, '#00ff00', '12px monospace');

 }