diff --git a/examples/assets/physics/ninja-test-level.json b/examples/assets/physics/ninja-test-level.json
new file mode 100644
index 00000000..4297c3f5
--- /dev/null
+++ b/examples/assets/physics/ninja-test-level.json
@@ -0,0 +1,39 @@
+{ "height":19,
+ "layers":[
+        {
+         "data":[1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 11, 0, 0, 0, 0, 0, 12, 2, 2, 2, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 19, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 2, 2, 11, 0, 0, 0, 12, 2, 2, 2, 2, 2, 2, 11, 0, 0, 0, 0, 0, 0, 0, 12, 2, 2, 2, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 2, 2, 2, 2, 2, 11, 0, 13, 2, 2, 2, 2, 2, 2, 14, 0, 0, 0, 0, 0, 0, 0, 13, 2, 2, 2, 14, 0, 0, 0, 0, 0, 12, 1, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 2, 2, 2, 2, 2, 2, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 2, 14, 0, 0, 0, 0, 0, 12, 2, 1, 5, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 10, 1, 1, 9, 2, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 2, 2, 2, 2, 2, 2, 14, 0, 0, 0, 0, 0, 8, 34, 0, 0, 0, 0, 32, 33, 33, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 31, 31, 31, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 34, 0, 0, 0, 0, 32, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 0, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 34, 0, 0, 0, 0, 32, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 11, 0, 0, 0, 0, 31, 31, 0, 0, 31, 31, 0, 0, 0, 0, 9, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 2, 2, 23, 0, 0, 0, 5, 6, 0, 0, 5, 6, 0, 0, 0, 0, 0, 0, 0, 31, 31, 31, 31, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 2, 2, 2, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 31, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 3, 1, 1, 1, 0, 28, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 16, 20, 2, 2, 7, 8, 11, 0, 0, 12, 11, 0, 1, 12, 2, 2, 2, 2, 2, 30, 1, 0, 0, 4, 3, 0, 4, 3, 0, 0, 16, 20, 11, 12, 2, 2, 2, 11, 12, 2, 2, 2, 11, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+         "height":19,
+         "name":"Tile Layer 1",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":50,
+         "x":0,
+         "y":0
+        }],
+ "orientation":"orthogonal",
+ "properties":
+    {
+
+    },
+ "tileheight":32,
+ "tilesets":[
+        {
+         "firstgid":1,
+         "image":"..\/..\/..\/resources\/Ninja Physics Debug Tiles\/32px\/ninja-tiles32.png",
+         "imageheight":96,
+         "imagewidth":512,
+         "margin":0,
+         "name":"ninja-tiles32",
+         "properties":
+            {
+
+            },
+         "spacing":0,
+         "tileheight":32,
+         "tilewidth":32
+        }],
+ "tilewidth":32,
+ "version":1,
+ "width":50
+}
\ No newline at end of file
diff --git a/examples/assets/physics/ninja-test-level.tmx b/examples/assets/physics/ninja-test-level.tmx
new file mode 100644
index 00000000..b6674a90
--- /dev/null
+++ b/examples/assets/physics/ninja-test-level.tmx
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.0" orientation="orthogonal" width="50" height="19" tilewidth="32" tileheight="32">
+ <tileset firstgid="1" name="ninja-tiles32" tilewidth="32" tileheight="32">
+  <image source="../../../resources/Ninja Physics Debug Tiles/32px/ninja-tiles32.png" width="512" height="96"/>
+ </tileset>
+ <layer name="Tile Layer 1" width="50" height="19">
+  <data encoding="base64">
+   AQAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAAAIAAAALAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAAgAAAAsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAwAAAACAAAAAgAAAAIAAAALAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAATAAAADwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAAAIAAAACAAAAAgAAAAsAAAAAAAAAAAAAAAAAAAAMAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAACwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAAgAAAAIAAAACAAAACwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAwAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAALAAAAAAAAAA0AAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAAOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0AAAACAAAAAgAAAAIAAAAOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAAQAAAAsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADQAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAA4AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0AAAACAAAADgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAAAIAAAABAAAABQAAAAsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAwAAAACAAAACgAAAAEAAAABAAAACQAAAAIAAAALAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAiAAAACgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADQAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAA4AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAiAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAhAAAAIQAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAB8AAAAfAAAAHwAAACIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACQAAACIAAAAAAAAAAAAAAAAAAAAAAAAAIAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIgAAAAAAAAAiAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIgAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAiAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAhAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAACwAAAAAAAAAAAAAAAAAAAAAAAAAfAAAAHwAAAAAAAAAAAAAAHwAAAB8AAAAAAAAAAAAAAAAAAAAAAAAACQAAACIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAIAAAACAAAAFwAAAAAAAAAAAAAAAAAAAAUAAAAGAAAAAAAAAAAAAAAFAAAABgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfAAAAHwAAAB8AAAAfAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAABcAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAwAAAACAAAAAgAAAAIAAAAbAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfAAAAHwAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAwAAAAEAAAABAAAAAQAAAAAAAAAcAAAAGwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIAAAAAgAAAAIAAAACAAAAAgAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACIAAAAAAAAAAAAAAAAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAwAAAAAAAAAQAAAAFAAAAAIAAAACAAAABwAAAAgAAAALAAAAAAAAAAAAAAAMAAAACwAAAAAAAAABAAAADAAAAAIAAAACAAAAAgAAAAIAAAACAAAAHgAAAAEAAAAAAAAAAAAAAAQAAAADAAAAAAAAAAQAAAADAAAAAAAAAAAAAAAQAAAAFAAAAAsAAAAMAAAAAgAAAAIAAAACAAAACwAAAAwAAAACAAAAAgAAAAIAAAALAAAADAAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAACAAAAAgAAAAIAAAA=
+  </data>
+ </layer>
+</map>
diff --git a/examples/assets/physics/ninja-tiles.png b/examples/assets/physics/ninja-tiles128.png
similarity index 100%
rename from examples/assets/physics/ninja-tiles.png
rename to examples/assets/physics/ninja-tiles128.png
diff --git a/examples/assets/physics/ninja-tiles32.png b/examples/assets/physics/ninja-tiles32.png
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index 00000000..e2f8639c
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diff --git a/examples/assets/physics/ninja-tiles64.png b/examples/assets/physics/ninja-tiles64.png
new file mode 100644
index 00000000..a99c246f
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diff --git a/examples/wip/ninja3.js b/examples/wip/ninja3.js
new file mode 100644
index 00000000..06a3fa48
--- /dev/null
+++ b/examples/wip/ninja3.js
@@ -0,0 +1,108 @@
+
+var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+// var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.spritesheet('ninja-tiles', 'assets/physics/ninja-tiles32.png', 32, 32, 34);
+    game.load.json('level', 'assets/physics/ninja-test-level.json');
+    game.load.image('ball', 'assets/sprites/shinyball.png');
+    game.load.image('sky', 'assets/skies/sky2.png');
+
+}
+
+var sprite1;
+var tiles;
+var cursors;
+
+
+function create() {
+
+	var sky = game.add.image(0, 0, 'sky');
+	sky.fixedToCamera = true;
+
+	//	Activate the Ninja physics system
+	game.physics.startSystem(Phaser.Physics.NINJA);
+
+    sprite1 = game.add.sprite(100, 0, 'ball');
+
+    //  Enable the physics body for the Ninja physics system
+    game.physics.ninja.enableCircle(sprite1, sprite1.width / 2);
+
+    //	A little more bounce
+    sprite1.body.bounce = 0.5;
+
+    var layer = game.cache.getJSON('level').layers[0];
+    var i = 0;
+    var data = layer.data;
+    var width = layer.width;
+    var height = layer.height;
+
+    //	Resize the world to match
+    game.world.setBounds(0, 0, width * 32, height * 32);
+
+    tiles = game.add.group();
+
+    var tile;
+
+    for (var y = 0; y < height; y++)
+    {
+	    for (var x = 0; x < width; x++)
+	    {
+	    	if (data[i] > 0)
+	    	{
+		    	tile = tiles.create(x * 32, y * 32, 'ninja-tiles', data[i] - 1);
+		    	game.physics.ninja.enableTile(tile, tile.frame);
+	    	}
+
+	    	i++;
+	    }
+    }
+
+    cursors = game.input.keyboard.createCursorKeys();
+
+    game.camera.follow(sprite1);
+
+}
+
+function update() {
+
+	game.physics.ninja.collide(sprite1, tiles);
+
+    // sprite1.body.setZeroVelocity();
+
+    if (cursors.left.isDown)
+    {
+        sprite1.body.moveLeft(20);
+    }
+    else if (cursors.right.isDown)
+    {
+        sprite1.body.moveRight(20);
+    }
+
+    if (cursors.up.isDown)
+    {
+        sprite1.body.moveUp(20);
+    }
+    else if (cursors.down.isDown)
+    {
+        sprite1.body.moveUp(20);
+    }
+
+}
+
+function render() {
+
+	// game.debug.text(sprite1.body.shape.velocity.x, 32, 32);
+	// game.debug.text(sprite1.body.shape.velocity.y, 32, 64);
+	// game.debug.text(game.math.radToDeg(sprite1.body.angle), 32, 96);
+
+	// tile1.render(game.context, 'ninja-tiles');
+	// tile2.render(game.context, 'ninja-tiles');
+
+    // game.debug.geom(sprite1.body, 'rgba(0,255,0,0.4)', true, 1);
+
+    // game.debug.geom(tile1, 'rgba(0,255,0,0.4)', true, 1);
+    // game.debug.geom(tile1, 'rgba(0,255,0,0.4)', true, 1);
+
+}
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diff --git a/src/physics/Physics.js b/src/physics/Physics.js
index d346bf01..16a9b981 100644
--- a/src/physics/Physics.js
+++ b/src/physics/Physics.js
@@ -94,7 +94,7 @@ Phaser.Physics.prototype = {
     * Phaser.Physics.Arcade is running by default, but all others need activating directly.
     * You can start the following physics systems:
     * Phaser.Physics.P2 - A full-body advanced physics system by Stefan Hedman.
-    * Phaser.Physics.NINJA - A port of the metanet N+ physics system.
+    * Phaser.Physics.NINJA - A port of Metanet Softwares N+ physics system.
     * Phaser.Physics.BOX2D and Phaser.Physics.CHIPMUNK are still in development.
     *
     * @method Phaser.Physics#startSystem
@@ -132,7 +132,7 @@ Phaser.Physics.prototype = {
     *
     * Phaser.Physics.Arcade - A light weight AABB based collision system with basic separation.
     * Phaser.Physics.P2 - A full-body advanced physics system supporting multiple object shapes, polygon loading, contact materials, springs and constraints.
-    * Phaser.Physics.NINJA - A port of the metanet N+ physics system. Advanced AABB and Circle vs. Tile collision.
+    * Phaser.Physics.NINJA - A port of Metanet Softwares N+ physics system. Advanced AABB and Circle vs. Tile collision.
     * Phaser.Physics.BOX2D and Phaser.Physics.CHIPMUNK are still in development.
     *
     * @method Phaser.Physics#enable
@@ -203,6 +203,11 @@ Phaser.Physics.prototype = {
     */
     setBoundsToWorld: function () {
 
+        if (this.ninja)
+        {
+            this.ninja.setBoundsToWorld();
+        }
+
     },
 
     /**
diff --git a/src/physics/ninja/AABB.js b/src/physics/ninja/AABB.js
index eec3189a..6010ebf0 100644
--- a/src/physics/ninja/AABB.js
+++ b/src/physics/ninja/AABB.js
@@ -6,11 +6,16 @@
 
 /**
 * Ninja Physics AABB constructor.
+* Note: This class could be massively optimised and reduced in size. I leave that challenge up to you.
 *
 * @class Phaser.Physics.Ninja.AABB
 * @classdesc Arcade Physics Constructor
 * @constructor
-* @param {Phaser.Game} game reference to the current game instance.
+* @param {Phaser.Physics.Ninja} system - A reference to the physics system.
+* @param {number} x - The x coordinate to create this shape at.
+* @param {number} y - The y coordinate to create this shape at.
+* @param {number} width - The width of this AABB.
+* @param {number} height - The height of this AABB.
 */
 Phaser.Physics.Ninja.AABB = function (system, x, y, width, height) {
     
diff --git a/src/physics/ninja/Body.js b/src/physics/ninja/Body.js
index 18362e49..75e2ab33 100644
--- a/src/physics/ninja/Body.js
+++ b/src/physics/ninja/Body.js
@@ -63,37 +63,66 @@ Phaser.Physics.Ninja.Body = function (system, sprite, type, id, radius) {
     */
     this.shape = null;
 
+    var sx = sprite.x;
+    var sy = sprite.y;
+
+    if (sprite.anchor.x === 0)
+    {
+        sx += (sprite.width * 0.5);
+    }
+
+    if (sprite.anchor.y === 0)
+    {
+        sy += (sprite.height * 0.5);
+    }
+
     if (type === 1)
     {
-        this.aabb = new Phaser.Physics.Ninja.AABB(system, sprite.x, sprite.y, sprite.width, sprite.height);
+        this.aabb = new Phaser.Physics.Ninja.AABB(this, sx, sy, sprite.width, sprite.height);
         this.shape = this.aabb;
     }
     else if (type === 2)
     {
-        this.circle = new Phaser.Physics.Ninja.Circle(system, sprite.x, sprite.y, radius);
+        this.circle = new Phaser.Physics.Ninja.Circle(this, sx, sy, radius);
         this.shape = this.circle;
     }
     else if (type === 3)
     {
-        this.tile = new Phaser.Physics.Ninja.Tile(system, sprite.x, sprite.y, sprite.width, sprite.height, id);
+        this.tile = new Phaser.Physics.Ninja.Tile(this, sx, sy, sprite.width, sprite.height, id);
         this.shape = this.tile;
     }
 
+    //  Setting drag to 0 and friction to 0 means you get a normalised speed (px psec)
+
+    /**
+    * @property {number} drag - The drag applied to this object as it moves.
+    * @default
+    */
+    this.drag = 1;
+
+    /**
+    * @property {number} friction - The friction applied to this object as it moves.
+    * @default
+    */
+    this.friction = 0.05;
+
+    /**
+    * @property {number} gravityScale - How much of the world gravity should be applied to this object? 1 = all of it, 0.5 = 50%, etc.
+    * @default
+    */
+    this.gravityScale = 1;
+
+    /**
+    * @property {number} bounce - The bounciness of this object when it collides. A value between 0 and 1. We recommend setting it to 0.999 to avoid jittering.
+    * @default
+    */
+    this.bounce = 0.3;
+
     /**
     * @property {Phaser.Point} velocity - The velocity in pixels per second sq. of the Body.
     */
     this.velocity = new Phaser.Point();
 
-    /**
-    * @property {Phaser.Point} drag - The drag applied to the motion of the Body.
-    */
-    this.drag = new Phaser.Point();
-
-    /**
-    * @property {Phaser.Point} bounce - The elasticitiy of the Body when colliding. bounce.x/y = 1 means full rebound, bounce.x/y = 0.5 means 50% rebound velocity.
-    */
-    this.bounce = new Phaser.Point();
-
     /**
     * @property {boolean} skipQuadTree - If the Body is an irregular shape you can set this to true to avoid it being added to any QuadTrees.
     * @default
diff --git a/src/physics/ninja/Circle.js b/src/physics/ninja/Circle.js
index 0c6ac3cf..9c31a257 100644
--- a/src/physics/ninja/Circle.js
+++ b/src/physics/ninja/Circle.js
@@ -6,33 +6,77 @@
 
 /**
 * Ninja Physics Circle constructor.
+* Note: This class could be massively optimised and reduced in size. I leave that challenge up to you.
 *
 * @class Phaser.Physics.Ninja.Circle
 * @classdesc Arcade Physics Constructor
 * @constructor
-* @param {Phaser.Game} game reference to the current game instance.
+* @param {Phaser.Physics.Ninja.Body} body - The body that owns this shape.
+* @param {number} x - The x coordinate to create this shape at.
+* @param {number} y - The y coordinate to create this shape at.
+* @param {number} radius - The radius of this Circle.
 */
-Phaser.Physics.Ninja.Circle = function (system, x, y, radius) {
+Phaser.Physics.Ninja.Circle = function (body, x, y, radius) {
 
-    this.system = system;
+    /**
+    * @property {Phaser.Physics.Ninja.Body} system - A reference to the body that owns this shape.
+    */
+    this.body = body;
+
+    /**
+    * @property {Phaser.Physics.Ninja} system - A reference to the physics system.
+    */
+    this.system = body.system;
+
+    /**
+    * @property {Phaser.Point} pos - The position of this object.
+    */
     this.pos = new Phaser.Point(x, y);
+
+    /**
+    * @property {Phaser.Point} oldpos - The position of this object in the previous update.
+    */
     this.oldpos = new Phaser.Point(x, y);
+
+    /**
+    * @property {number} radius - The radius of this circle shape.
+    */
     this.radius = radius;
 
+    /**
+    * @property {number} width - The width.
+    * @readonly
+    */
     this.width = radius * 2;
+
+    /**
+    * @property {number} height - The height.
+    * @readonly
+    */
     this.height = radius * 2;
 
+    /**
+    * @property {number} oH - Internal var.
+    * @private
+    */
     this.oH = 0;
+
+    /**
+    * @property {number} oV - Internal var.
+    * @private
+    */
     this.oV = 0;
 
-    //  Setting drag to 0 and friction to 0 means you get a normalised speed (px psec)
-    this.drag = 1;
-    this.friction = 0.05;
-    this.gravityScale = 1;
-    this.bounce = 0.3;
+    /**
+    * @property {Phaser.Point} velocity - The velocity of this object.
+    */
     this.velocity = new Phaser.Point();
 
+    /**
+    * @property {object} circleTileProjections - All of the collision response handlers.
+    */
     this.circleTileProjections = {};
+
     this.circleTileProjections[Phaser.Physics.Ninja.Tile.TYPE_FULL] = this.projCircle_Full;
     this.circleTileProjections[Phaser.Physics.Ninja.Tile.TYPE_45DEG] = this.projCircle_45Deg;
     this.circleTileProjections[Phaser.Physics.Ninja.Tile.TYPE_CONCAVE] = this.projCircle_Concave;
@@ -64,8 +108,8 @@ Phaser.Physics.Ninja.Circle.prototype = {
         var py = this.pos.y;
 
         //  integrate
-        this.pos.x += (this.drag * this.pos.x) - (this.drag * this.oldpos.x);
-        this.pos.y += (this.drag * this.pos.y) - (this.drag * this.oldpos.y) + (this.system.gravity * this.gravityScale);
+        this.pos.x += (this.body.drag * this.pos.x) - (this.body.drag * this.oldpos.x);
+        this.pos.y += (this.body.drag * this.pos.y) - (this.body.drag * this.oldpos.y) + (this.system.gravity * this.body.gravityScale);
 
         //  store
         this.velocity.set(this.pos.x - px, this.pos.y - py);
@@ -88,29 +132,28 @@ Phaser.Physics.Ninja.Circle.prototype = {
         var p = this.pos;
         var o = this.oldpos;
 
-        //calc velocity
+        //  Calc velocity
         var vx = p.x - o.x;
         var vy = p.y - o.y;
 
-        //find component of velocity parallel to collision normal
+        //  Find component of velocity parallel to collision normal
         var dp = (vx * dx + vy * dy);
-        var nx = dp * dx;//project velocity onto collision normal
+        var nx = dp * dx;   //project velocity onto collision normal
 
-        var ny = dp * dy;//nx,ny is normal velocity
+        var ny = dp * dy;   //nx,ny is normal velocity
 
-        var tx = vx - nx;//px,py is tangent velocity
+        var tx = vx - nx;   //px,py is tangent velocity
         var ty = vy - ny;
 
-        //we only want to apply collision response forces if the object is travelling into, and not out of, the collision
-        var b, bx, by, f, fx, fy;
+        //  We only want to apply collision response forces if the object is travelling into, and not out of, the collision
+        var b, bx, by, fx, fy;
 
         if (dp < 0)
         {
-            //f = FRICTION;
-            fx = tx * this.friction;
-            fy = ty * this.friction;
+            fx = tx * this.body.friction;
+            fy = ty * this.body.friction;
 
-            b = 1 + this.bounce;
+            b = 1 + this.body.bounce;
 
             bx = (nx * b);
             by = (ny * b);
@@ -118,14 +161,16 @@ Phaser.Physics.Ninja.Circle.prototype = {
         }
         else
         {
-            //moving out of collision, do not apply forces
+            //  Moving out of collision, do not apply forces
             bx = by = fx = fy = 0;
         }
 
-        p.x += px;//project object out of collision
+        //  Project object out of collision
+        p.x += px;
         p.y += py;
 
-        o.x += px + bx + fx;//apply bounce+friction impulses which alter velocity
+        //  Apply bounce+friction impulses which alter velocity
+        o.x += px + bx + fx;
         o.y += py + by + fy;
 
     },
@@ -197,40 +242,41 @@ Phaser.Physics.Ninja.Circle.prototype = {
         var txw = c.xw;
         var tyw = c.yw;
 
-        var dx = pos.x - tx;//tile->obj delta
-        var px = (txw + r) - Math.abs(dx);//penetration depth in x
+        var dx = pos.x - tx;    //  tile->obj delta
+        var px = (txw + r) - Math.abs(dx);  //  penetration depth in x
 
         if (0 < px)
         {
-            var dy = pos.y - ty;//tile->obj delta
-            var py = (tyw + r) - Math.abs(dy);//pen depth in y
+            var dy = pos.y - ty;    //  tile->obj delta
+            var py = (tyw + r) - Math.abs(dy);  //  pen depth in y
 
             if (0 < py)
             {
-                //object may be colliding with tile
+                //  object may be colliding with tile
 
-                //determine grid/voronoi region of circle center
+                //  determine grid/voronoi region of circle center
                 this.oH = 0;
                 this.oV = 0;
+
                 if (dx < -txw)
                 {
-                    //circle is on left side of tile
+                    //  circle is on left side of tile
                     this.oH = -1;
                 }
                 else if (txw < dx)
                 {
-                    //circle is on right side of tile
+                    //  circle is on right side of tile
                     this.oH = 1;
                 }
 
                 if (dy < -tyw)
                 {
-                    //circle is on top side of tile
+                    //  circle is on top side of tile
                     this.oV = -1;
                 }
                 else if (tyw < dy)
                 {
-                    //circle is on bottom side of tile
+                    //  circle is on bottom side of tile
                     this.oV = 1;
                 }
 
@@ -260,7 +306,7 @@ Phaser.Physics.Ninja.Circle.prototype = {
         }
         else
         {
-            console.log("ResolveCircleTile() was called with an empty (or unknown) tile!: ID=" + t.id + ")");
+            // console.log("ResolveCircleTile() was called with an empty (or unknown) tile!: ID=" + t.id + ")");
             return false;
         }
 
@@ -352,6 +398,7 @@ Phaser.Physics.Ninja.Circle.prototype = {
 
             var len = Math.sqrt(dx * dx + dy * dy);
             var pen = obj.radius - len;
+
             if (0 < pen)
             {
                 //vertex is in the circle; project outward
@@ -417,6 +464,7 @@ Phaser.Physics.Ninja.Circle.prototype = {
                 //if the dotprod of (ox,oy) and (sx,sy) is negative, the innermost point is in the slope
                 //and we need toproject it out by the magnitude of the projection of (ox,oy) onto (sx,sy)
                 var dp = (ox * sx) + (oy * sy);
+
                 if (dp < 0)
                 {
                     //collision; project delta onto slope and use this as the slope penetration vector
diff --git a/src/physics/ninja/Tile.js b/src/physics/ninja/Tile.js
index 4312115b..12a0d628 100644
--- a/src/physics/ninja/Tile.js
+++ b/src/physics/ninja/Tile.js
@@ -6,22 +6,53 @@
 
 /**
 * Ninja Physics Tile constructor.
+* 
+* Note: This class could be massively optimised and reduced in size. I leave that challenge up to you.
 *
 * @class Phaser.Physics.Ninja.Tile
-* @classdesc Arcade Physics Constructor
+* @classdesc The Ninja Physics Tile class. Based on code by Metanet Software.
 * @constructor
-* @param {Phaser.Game} game reference to the current game instance.
+* @param {Phaser.Physics.Ninja.Body} body - The body that owns this shape.
+* @param {number} x - The x coordinate to create this shape at.
+* @param {number} y - The y coordinate to create this shape at.
+* @param {number} width - The width of this AABB.
+* @param {number} height - The height of this AABB.
+* @param {number} [type=1] - The type of Ninja shape to create. 1 = AABB, 2 = Circle or 3 = Tile.
 */
-Phaser.Physics.Ninja.Tile = function (system, x, y, width, height, type) {
+Phaser.Physics.Ninja.Tile = function (body, x, y, width, height, type) {
     
     if (typeof type === 'undefined') { type = Phaser.Physics.Ninja.Tile.EMPTY; }
 
-    this.system = system;
+    /**
+    * @property {Phaser.Physics.Ninja.Body} system - A reference to the body that owns this shape.
+    */
+    this.body = body;
 
+    /**
+    * @property {Phaser.Physics.Ninja} system - A reference to the physics system.
+    */
+    this.system = body.system;
+
+    /**
+    * @property {number} id - The ID of this Tile.
+    * @readonly
+    */
     this.id = type;
+
+    /**
+    * @property {number} type - The type of this Tile.
+    * @readonly
+    */
     this.type = Phaser.Physics.Ninja.Tile.TYPE_EMPTY;
 
+    /**
+    * @property {Phaser.Point} pos - The position of this object.
+    */
     this.pos = new Phaser.Point(x, y);
+
+    /**
+    * @property {Phaser.Point} oldpos - The position of this object in the previous update.
+    */
     this.oldpos = new Phaser.Point(x, y);
 
     if (this.id > 1 && this.id < 30)
@@ -30,22 +61,57 @@ Phaser.Physics.Ninja.Tile = function (system, x, y, width, height, type) {
         height = width;
     }
 
+    /**
+    * @property {number} xw - Half the width.
+    * @readonly
+    */
     this.xw = Math.abs(width / 2);
+
+    /**
+    * @property {number} xw - Half the height.
+    * @readonly
+    */
     this.yw = Math.abs(height / 2);
 
+    /**
+    * @property {number} width - The width.
+    * @readonly
+    */
     this.width = width;
+
+    /**
+    * @property {number} height - The height.
+    * @readonly
+    */
     this.height = height;
 
-    this.drag = 1;
-    this.friction = 0.05;
-    this.gravityScale = 1;
-    this.bounce = 0.3;
+    /**
+    * @property {Phaser.Point} velocity - The velocity of this object.
+    */
     this.velocity = new Phaser.Point();
 
-    //  This stores tile-specific collision information
+    /**
+    * @property {number} signx - Internal var.
+    * @private
+    */
     this.signx = 0;
+
+    /**
+    * @property {number} signy - Internal var.
+    * @private
+    */
     this.signy = 0;
+
+    /**
+    * @property {number} sx - Internal var.
+    * @private
+    */
     this.sx = 0;
+
+    /**
+    * @property {number} sy - Internal var.
+    * @private
+    */
     this.sy = 0;
 
     if (this.id > 0)
@@ -60,29 +126,37 @@ Phaser.Physics.Ninja.Tile.prototype.constructor = Phaser.Physics.Ninja.Tile;
 Phaser.Physics.Ninja.Tile.prototype = {
 
     /**
-    * Updates this AABBs position.
+    * Updates this objects position.
     *
-    * @method Phaser.Physics.Ninja.AABB#integrate
+    * @method Phaser.Physics.Ninja.Tile#integrate
     */
     integrate: function () {
 
         var px = this.pos.x;
         var py = this.pos.y;
 
-        this.pos.x += (this.drag * this.pos.x) - (this.drag * this.oldpos.x);
-        this.pos.y += (this.drag * this.pos.y) - (this.drag * this.oldpos.y);
+        this.pos.x += (this.body.drag * this.pos.x) - (this.body.drag * this.oldpos.x);
+        this.pos.y += (this.body.drag * this.pos.y) - (this.body.drag * this.oldpos.y);
 
         this.velocity.set(this.pos.x - px, this.pos.y - py);
         this.oldpos.set(px, py);
 
     },
 
+    /**
+    * Tiles cannot collide with the world bounds, it's up to you to keep them where you want them. But we need this API stub to satisfy the Body.
+    *
+    * @method Phaser.Physics.Ninja.Tile#collideWorldBounds
+    */
     collideWorldBounds: function () {
     },
 
-    //these functions are used to update the cell
-    //note: id is assumed to NOT be "empty" state..
-    //if it IS the empty state, the tile clears itself
+    /**
+    * Tiles cannot collide with the world bounds, it's up to you to keep them where you want them. But we need this API stub to satisfy the Body.
+    *
+    * @method Phaser.Physics.Ninja.Tile#setType
+    * @param {number} id - The type of Tile this will use, i.e. Phaser.Physics.Ninja.Tile.SLOPE_45DEGpn, Phaser.Physics.Ninja.Tile.CONVEXpp, etc.
+    */
     setType: function (id) {
 
         if (id === Phaser.Physics.Ninja.Tile.EMPTY)
@@ -91,7 +165,6 @@ Phaser.Physics.Ninja.Tile.prototype = {
         }
         else
         {
-            //set tile state to a non-emtpy value, and update it's edges and those of the neighbors
             this.id = id;
             this.updateType();
         }
@@ -100,6 +173,11 @@ Phaser.Physics.Ninja.Tile.prototype = {
 
     },
 
+    /**
+    * Sets this tile to be empty.
+    *
+    * @method Phaser.Physics.Ninja.Tile#clear
+    */
     clear: function () {
 
         this.id = Phaser.Physics.Ninja.Tile.EMPTY;
@@ -107,28 +185,13 @@ Phaser.Physics.Ninja.Tile.prototype = {
 
     },
 
-    render: function (context, key) {
-        
-        if (this.id === 0)
-        {
-            return;
-        }
-
-        var image = this.system.game.cache.getImage(key);
-        var data = this.system.game.cache.getFrameData(key);
-        var frame = data._frames[this.id - 1];
-
-        context.drawImage(image, frame.x, frame.y, frame.width, frame.height, this.x, this.y, this.width, this.height);
-
-        // context.beginPath();
-        // context.strokeStyle = 'rgb(255,255,0)';
-        // context.strokeRect(this.x, this.y, this.width, this.height);
-        // context.strokeRect(this.pos.x, this.pos.y, 2, 2); // center point
-        // context.closePath();
-
-    },
-
-    //this converts a tile from implicitly-defined (via id), to explicit (via properties)
+    /**
+    * This converts a tile from implicitly-defined (via id), to explicit (via properties).
+    * Don't call directly, instead of setType.
+    *
+    * @method Phaser.Physics.Ninja.Tile#updateType
+    * @private
+    */
     updateType: function () {
 
         if (this.id === 0)
@@ -567,7 +630,6 @@ Object.defineProperty(Phaser.Physics.Ninja.Tile.prototype, "right", {
 
 });
 
-//  TILETYPE ENUMERATION
 Phaser.Physics.Ninja.Tile.EMPTY = 0;
 Phaser.Physics.Ninja.Tile.FULL = 1;//fullAABB tile
 Phaser.Physics.Ninja.Tile.SLOPE_45DEGpn = 2;//45-degree triangle, whose normal is (+ve,-ve)
@@ -603,7 +665,6 @@ Phaser.Physics.Ninja.Tile.HALFr = 31;
 Phaser.Physics.Ninja.Tile.HALFu = 32;
 Phaser.Physics.Ninja.Tile.HALFl = 33;
 
-//collision shape  "types"
 Phaser.Physics.Ninja.Tile.TYPE_EMPTY = 0;
 Phaser.Physics.Ninja.Tile.TYPE_FULL = 1;
 Phaser.Physics.Ninja.Tile.TYPE_45DEG = 2;
diff --git a/src/physics/ninja/World.js b/src/physics/ninja/World.js
index 34d951ec..0a10d537 100644
--- a/src/physics/ninja/World.js
+++ b/src/physics/ninja/World.js
@@ -7,8 +7,10 @@
 /**
 * Ninja Physics constructor.
 *
+* The Ninja Physics system was created in Flash by Metanet Software and ported to JavaScript by Richard Davey.
+*
 * @class Phaser.Physics.Ninja
-* @classdesc Arcade Physics Constructor
+* @classdesc Ninja Physics Constructor
 * @constructor
 * @param {Phaser.Game} game reference to the current game instance.
 */
@@ -83,7 +85,7 @@ Phaser.Physics.Ninja.prototype = {
     *
     * @method Phaser.Physics.Ninja#enableTile
     * @param {object|array} object - The game object to create the physics body on. Can also be an array of objects, a body will be created on every object in the array.
-    * @param {number} radius - The radius of the Circle.
+    * @param {number} [id=1] - The type of Tile this will use, i.e. Phaser.Physics.Ninja.Tile.SLOPE_45DEGpn, Phaser.Physics.Ninja.Tile.CONVEXpp, etc.
     */
     enableTile: function (object, id) {
 
@@ -131,14 +133,40 @@ Phaser.Physics.Ninja.prototype = {
 
     },
 
+    /**
+    * Updates the size of this physics world.
+    *
+    * @method Phaser.Physics.Ninja#setBounds
+    * @param {number} x - Top left most corner of the world.
+    * @param {number} y - Top left most corner of the world.
+    * @param {number} width - New width of the world. Can never be smaller than the Game.width.
+    * @param {number} height - New height of the world. Can never be smaller than the Game.height.
+    */
+    setBounds: function (x, y, width, height) {
+
+        this.bounds.setTo(x, y, width, height);
+
+    },
+
+    /**
+    * Updates the size of this physics world to match the size of the game world.
+    *
+    * @method Phaser.Physics.Ninja#setBoundsToWorld
+    */
+    setBoundsToWorld: function () {
+
+        this.bounds.setTo(this.game.world.bounds.x, this.game.world.bounds.y, this.game.world.bounds.width, this.game.world.bounds.height);
+
+    },
+
     /**
     * Called automatically by a Physics body, it updates all motion related values on the Body.
     *
     * @method Phaser.Physics.Ninja#updateMotion
     * @param {Phaser.Physics.Ninja.Body} The Body object to be updated.
-    */
     update: function () {
     },
+    */
 
     /**
     * Checks for overlaps between two game objects. The objects can be Sprites, Groups or Emitters.