diff --git a/v3/src/physics/impact/Body.js b/v3/src/physics/impact/Body.js
index 3915950a8..e74a36198 100644
--- a/v3/src/physics/impact/Body.js
+++ b/v3/src/physics/impact/Body.js
@@ -39,13 +39,13 @@ var Body = new Class({
         this.vel = { x: 0, y: 0 };
         this.accel = { x: 0, y: 0 };
         this.friction = { x: 0, y: 0 };
-        this.maxVel = { x: 100, y: 100 };
+        this.maxVel = { x: world.defaults.maxVelocityX, y: world.defaults.maxVelocityY };
 
         this.standing = false;
 
-        this.gravityFactor = 1;
-        this.bounciness = 0;
-        this.minBounceVelocity = 40;
+        this.gravityFactor = world.defaults.gravityFactor;
+        this.bounciness = world.defaults.bounciness;
+        this.minBounceVelocity = world.defaults.minBounceVelocity;
 
         this.accelGround = 0;
         this.accelAir = 0;
@@ -57,7 +57,7 @@ var Body = new Class({
 
         this.debugShowBody = true;
         this.debugShowVelocity = true;
-        this.debugBodyColor = world.debugColors.body;
+        this.debugBodyColor = world.defaults.bodyDebugColor;
     
         //  min 44 deg, max 136 deg
         this.slopeStanding = { min: 0.767944870877505, max: 2.3736477827122884 };
@@ -131,7 +131,7 @@ var Body = new Class({
                 var x = pos.x + this.size.x / 2;
                 var y = pos.y + this.size.y / 2;
 
-                graphic.lineStyle(1, this.world.debugColors.velocity, 1);
+                graphic.lineStyle(1, this.world.defaults.velocityDebugColor, 1);
                 graphic.lineBetween(x, y, x + this.vel.x, y + this.vel.y);
             }
         }
diff --git a/v3/src/physics/impact/World.js b/v3/src/physics/impact/World.js
index cb26451d1..86b4c3660 100644
--- a/v3/src/physics/impact/World.js
+++ b/v3/src/physics/impact/World.js
@@ -4,6 +4,7 @@ var Body = require('./Body');
 var Class = require('../../utils/Class');
 var COLLIDES = require('./COLLIDES');
 var CollisionMap = require('./CollisionMap');
+var GetFastValue = require('../../utils/object/GetFastValue');
 var Set = require('../../structs/Set');
 var Solver = require('./Solver');
 var TYPE = require('./TYPE');
@@ -12,46 +13,47 @@ var World = new Class({
 
     initialize:
 
-    function World (scene, gravity, cellSize, showDebug)
+    function World (scene, config)
     {
-        if (gravity === undefined) { gravity = 0; }
-        if (cellSize === undefined) { cellSize = 64; }
-        if (showDebug === undefined) { showDebug = false; }
-
         this.scene = scene;
 
         this.events = scene.sys.events;
 
         this.bodies = new Set();
 
-        this.gravity = gravity;
+        this.gravity = GetFastValue(config, 'gravity', 0);
 
         //  Spatial hash cell dimensions
-        this.cellSize = cellSize;
+        this.cellSize = GetFastValue(config, 'cellSize', 64);
 
         this.collisionMap = new CollisionMap();
 
-        this.delta = 0;
-
-        this.timeScale = 1;
+        this.timeScale = GetFastValue(config, 'timeScale', 1);
 
         //  Impacts maximum time step is 20 fps.
-        this.maxStep = 0.05;
+        this.maxStep = GetFastValue(config, 'maxStep', 0.05);
 
         this.enabled = true;
 
-        this.drawDebug = false;
+        this.drawDebug = GetFastValue(config, 'debug', false);
 
         this.debugGraphic;
 
-        this.debugColors = {
-            body: 0xff00ff,
-            velocity: 0x00ff00
+        this.defaults = {
+            bodyDebugColor: GetFastValue(config, 'debugBodyColor', 0xff00ff),
+            velocityDebugColor: GetFastValue(config, 'debugVelocityColor', 0x00ff00),
+            maxVelocityX: GetFastValue(config, 'maxVelocityX', 100),
+            maxVelocityY: GetFastValue(config, 'maxVelocityY', 100),
+            minBounceVelocity: GetFastValue(config, 'minBounceVelocity', 40),
+            gravityFactor: GetFastValue(config, 'gravityFactor', 1),
+            bounciness: GetFastValue(config, 'bounciness', 0)
         };
 
+        this.delta = 0;
+
         this._lastId = 0;
 
-        if (showDebug)
+        if (this.drawDebug)
         {
             this.createDebugGraphic();
         }
diff --git a/v3/src/plugins/PhysicsManager.js b/v3/src/plugins/PhysicsManager.js
index cb18f390b..dd5c075f5 100644
--- a/v3/src/plugins/PhysicsManager.js
+++ b/v3/src/plugins/PhysicsManager.js
@@ -29,7 +29,7 @@ var PhysicsManager = new Class({
 
         if (config.system === 'impact')
         {
-            this.world = new Physics.Impact.World(this.scene, config.gravity, config.cellSize, config.debug);
+            this.world = new Physics.Impact.World(this.scene, config);
             this.add = new Physics.Impact.Factory(this.world);
         }
     },