diff --git a/README.md b/README.md
index 25f4dda5..d4cd1892 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,7 @@ New features:
 * Phaser.Timer.stop has a new parameter: clearEvents (default true), if true all the events in Timer will be cleared, otherwise they will remain (fixes #383)
 * All GameObjects now have a 'destroyChildren' boolean as a parameter to their destroy method. It's default is true and the value propogates down its children.
 * Pixi GrayFilter ported over (thanks nickryall #404)
+* Animation.speed added. You can now change the animation speed on the fly, without re-starting the animation (feature request #458)
 
 
 Updates:
diff --git a/examples/wip/anim-speed.js b/examples/wip/anim-speed.js
new file mode 100644
index 00000000..89ecf269
--- /dev/null
+++ b/examples/wip/anim-speed.js
@@ -0,0 +1,48 @@
+
+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.spritesheet('mummy', 'assets/sprites/metalslug_mummy37x45.png', 37, 45, 18);
+
+}
+
+var mummy;
+var anim;
+
+function create() {
+
+	game.stage.backgroundColor = 0x2d2d2d;
+
+    mummy = game.add.sprite(300, 200, 'mummy', 5);
+
+    anim = mummy.animations.add('walk');
+
+    anim.play(10, true);
+
+    game.input.onDown.add(changeSpeed, this);
+
+}
+
+function changeSpeed(pointer) {
+
+	if (pointer.x < 400)
+	{
+		anim.speed -= 1;
+	}
+	else
+	{
+		anim.speed += 1;
+	}
+
+}
+
+function update() {
+
+}
+
+function render() {
+
+	game.debug.renderText(anim.speed, 32, 32);
+	
+}
\ No newline at end of file
diff --git a/src/animation/Animation.js b/src/animation/Animation.js
index 52dc51fb..b1e22387 100644
--- a/src/animation/Animation.js
+++ b/src/animation/Animation.js
@@ -466,6 +466,29 @@ Object.defineProperty(Phaser.Animation.prototype, 'frame', {
 
 });
 
+/**
+* @name Phaser.Animation#speed
+* @property {number} speed - Gets or sets the current speed of the animation, the time between each frame of the animation, given in ms. Takes effect from the NEXT frame. Minimum value is 1.
+*/
+Object.defineProperty(Phaser.Animation.prototype, 'speed', {
+
+    get: function () {
+
+        return Math.round(1000 / this.delay);
+
+    },
+
+    set: function (value) {
+
+        if (value >= 1)
+        {
+            this.delay = 1000 / value;
+        }
+
+    }
+
+});
+
 /**
 * Really handy function for when you are creating arrays of animation data but it's using frame names and not numbers.
 * For example imagine you've got 30 frames named: 'explosion_0001-large' to 'explosion_0030-large'