diff --git a/examples/sprite2.php b/examples/sprite2.php
index 16e19c64..f9dffc4d 100644
--- a/examples/sprite2.php
+++ b/examples/sprite2.php
@@ -17,14 +17,24 @@
 	var bunny;
 
 	function preload() {
-		game.load.spritesheet('ms', 'assets/sprites/metalslug_mummy37x45.png', 37, 45);
+		//	37x45 is the size of each frame
+		//	There are 18 frames in the PNG - you can leave this value blank if the frames fill up the entire PNG, but in this case there are some
+		//	blank frames at the end, so we tell the loader how many to load
+		game.load.spritesheet('ms', 'assets/sprites/metalslug_mummy37x45.png', 37, 45, 18);
 	}
 
 	function create() {
 
-		bunny = new Phaser.Sprite(game, 0, 0, 'ms', 10);
+		bunny = game.add.sprite(-40, 100, 'ms');
 
-		game.world.add(bunny);
+		bunny.animations.add('walk');
+
+		bunny.animations.play('walk', 50, true);
+
+		// bunny.scale.x = 8;
+		// bunny.scale.y = 8;
+
+		game.add.tween(bunny).to({ x: game.width }, 10000, Phaser.Easing.Linear.None, true);
 
 	}
 
diff --git a/src/animation/AnimationManager.js b/src/animation/AnimationManager.js
index ea02923d..0abe0eb1 100644
--- a/src/animation/AnimationManager.js
+++ b/src/animation/AnimationManager.js
@@ -61,16 +61,17 @@ Phaser.AnimationManager.prototype = {
 
 		if (this._frameData == null)
 		{
+			console.warn('No frameData available for Phaser.Animation ' + name);
 			return;
 		}
 
 		//  Create the signals the AnimationManager will emit
-		if (this._parent.events.onAnimationStart == null)
-		{
+		// if (this._parent.events.onAnimationStart == null)
+		// {
 			// this._parent.events.onAnimationStart = new Phaser.Signal();
 			// this._parent.events.onAnimationComplete = new Phaser.Signal();
 			// this._parent.events.onAnimationLoop = new Phaser.Signal();
-		}
+		// }
 
 		if (frames == null)
 		{
@@ -243,7 +244,6 @@ Object.defineProperty(Phaser.AnimationManager.prototype, "frame", {
         {
             this.currentFrame = this._frameData.getFrame(value);
             this._frameIndex = value;
-            console.log('AM set frame', value, this.currentFrame);
 			this._parent.setTexture(PIXI.TextureCache[this.currentFrame.uuid]);
         }
 
diff --git a/src/core/World.js b/src/core/World.js
index 312bd9c8..4171910f 100644
--- a/src/core/World.js
+++ b/src/core/World.js
@@ -21,10 +21,12 @@ Phaser.World.prototype = {
 
 	add: function (gameobject) {
 		this._container.addChild(gameobject);
+		return gameobject;
 	},
 
 	addAt: function (gameobject, index) {
 		this._container.addChildAt(gameobject, index);
+		return gameobject;
 	},
 
 	getAt: function (index) {
@@ -33,6 +35,7 @@ Phaser.World.prototype = {
 
 	remove: function (gameobject) {
 		this._container.removeChild(gameobject);
+		return gameobject;
 	},
 
 	/**
diff --git a/src/gameobjects/GameObjectFactory.js b/src/gameobjects/GameObjectFactory.js
index 253c24ce..b58b3342 100644
--- a/src/gameobjects/GameObjectFactory.js
+++ b/src/gameobjects/GameObjectFactory.js
@@ -1,14 +1,14 @@
 Phaser.GameObjectFactory = function (game) {
 
 	this.game = game;
-	this._world = this.game.world;
+	this.world = this.game.world;
 
 };
 
 Phaser.GameObjectFactory.prototype = {
 
-	_world: null,
 	game: null,
+    world: null,
 
 	/**
     * Create a new Sprite with specific position and sprite sheet key.
@@ -24,8 +24,23 @@ Phaser.GameObjectFactory.prototype = {
         if (typeof key === "undefined") { key = ''; }
         if (typeof frame === "undefined") { frame = null; }
 
-        // return this._world.group.add(new Phaser.Sprite(this.game, x, y, key, frame));
+        return this.world.add(new Phaser.Sprite(this.game, x, y, key, frame));
 
     },
 
+    /**
+    * Create a tween object for a specific object. The object can be any JavaScript object or Phaser object such as Sprite.
+    *
+    * @param obj {object} Object the tween will be run on.
+    * @param [localReference] {bool} If true the tween will be stored in the object.tween property so long as it exists. If already set it'll be over-written.
+    * @return {Phaser.Tween} The newly created tween object.
+    */
+    tween: function (obj, localReference) {
+
+        if (typeof localReference === "undefined") { localReference = false; }
+
+        return this.game.tweens.create(obj, localReference);
+
+    }
+
 };
\ No newline at end of file
diff --git a/src/gameobjects/Sprite.js b/src/gameobjects/Sprite.js
index 738f20b2..792f4342 100644
--- a/src/gameobjects/Sprite.js
+++ b/src/gameobjects/Sprite.js
@@ -47,9 +47,14 @@ Phaser.Sprite = function (game, x, y, key, frame) {
 	 */
 	this.texture = PIXI.TextureCache[key];
 
+    if (this.game.cache.isSpriteSheet(key))
+    {
+        this.animations.loadFrameData(this.game.cache.getFrameData(key));
+    }
+
     if (frame !== null)
     {
-        if (typeof frame == 'string')
+        if (typeof frame === 'string')
         {
             this.frameName = frame;
         }
diff --git a/src/tween/Tween.js b/src/tween/Tween.js
index 8c58ced5..65c57e1d 100644
--- a/src/tween/Tween.js
+++ b/src/tween/Tween.js
@@ -41,8 +41,7 @@ Phaser.Tween = function (object, game) {
 		this._valuesStart[ field ] = parseFloat(object[field], 10);
 	}
 
-    // this.onStart = new Phaser.Signal();
-    // this.onUpdate = new Phaser.Signal();
+    this.onStart = new Phaser.Signal();
     this.onComplete = new Phaser.Signal();
 
     this.isRunning = false;
@@ -93,12 +92,14 @@ Phaser.Tween.prototype = {
 
 	start: function ( time ) {
 
-		//TWEEN.add( this );
-
         if (this.game === null || this._object === null) {
             return;
         }
 
+		this._manager.add(this);
+
+		this.onStart.dispatch(this._object);
+
         this.isRunning = true;
 
 		this._onStartCallbackFired = false;
@@ -139,11 +140,7 @@ Phaser.Tween.prototype = {
 
 	stop: function () {
 
-		//TWEEN.remove( this );
-        if (this._manager !== null) {
-            this._manager.remove(this);
-        }
-
+		this._manager.remove(this);
         this.isRunning = false;
 
 		return this;
@@ -171,7 +168,6 @@ Phaser.Tween.prototype = {
 
 	},
 
-
 	easing: function ( easing ) {
 
 		this._easingFunction = easing;
diff --git a/src/tween/TweenManager.js b/src/tween/TweenManager.js
index ad437c26..20a558a0 100644
--- a/src/tween/TweenManager.js
+++ b/src/tween/TweenManager.js
@@ -26,7 +26,7 @@ Phaser.TweenManager.prototype = {
 	*/
 	getAll: function () {
 
-		return _tweens;
+		return this._tweens;
 
 	},
 
@@ -35,7 +35,7 @@ Phaser.TweenManager.prototype = {
 	*/
 	removeAll: function () {
 
-		_tweens = [];
+		this._tweens = [];
 
 	},
 
@@ -47,7 +47,7 @@ Phaser.TweenManager.prototype = {
 	*/
 	add: function ( tween ) {
 
-		_tweens.push( tween );
+		this._tweens.push( tween );
 
 	},
 
@@ -81,11 +81,11 @@ Phaser.TweenManager.prototype = {
 	*/
 	remove: function ( tween ) {
 
-		var i = _tweens.indexOf( tween );
+		var i = this._tweens.indexOf( tween );
 
 		if ( i !== -1 ) {
 
-			_tweens.splice( i, 1 );
+			this._tweens.splice( i, 1 );
 
 		}