===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,18 @@
 /**** 
 * Classes
 ****/
+// Define the Backdrop class
+var Backdrop = Container.expand(function () {
+	var self = Container.call(this);
+	var backdropGraphics = self.createAsset('backdrop', 'Game backdrop', 0.5, 0.5);
+	// Set the backdrop to cover the entire game area
+	backdropGraphics.width = game.width;
+	backdropGraphics.height = game.height;
+	// Center the backdrop
+	backdropGraphics.x = game.width / 2;
+	backdropGraphics.y = game.height / 2;
+});
 // Define the Player class
 var Player = Container.expand(function () {
 	var self = Container.call(this);
 	var playerGraphics = self.createAsset('player', 'Player character', 0.5, 1);
@@ -72,9 +83,11 @@
 
 /**** 
 * Game Code
 ****/
+// Create and add the backdrop to the game
 // Initialize important asset arrays and score
+var backdrop = game.addChild(new Backdrop());
 var obstacles = [];
 var score = 0;
 var scoreTxt = new Text2(score.toString(), {
 	size: 150,