===================================================================
--- original.js
+++ change.js
@@ -72,8 +72,22 @@
 			self.x = 0;
 		}
 	};
 });
+// Define a class for the wall
+var Wall = Container.expand(function () {
+	var self = Container.call(this);
+	var wallGraphics = self.attachAsset('wall', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		scaleX: 1.5,
+		scaleY: 1.5,
+		tint: 0x0000FF
+	});
+	self.update = function () {
+		// Wall update logic
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -87,8 +101,12 @@
 // Initialize player
 var player = game.addChild(new Player());
 player.x = 1024;
 player.y = 2500;
+// Initialize wall
+var wall = game.addChild(new Wall());
+wall.x = 1024;
+wall.y = 1500;
 // Initialize ground
 var ground = game.addChild(new Ground());
 ground.x = 1024;
 ground.y = 2732 - ground.height / 2;
@@ -114,8 +132,13 @@
 // Game update loop
 game.update = function () {
 	// Update player
 	player.update();
+	// Check for collision between player and wall
+	if (player.intersects(wall)) {
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
+	}
 	// Make the screen follow the player
 	game.x = -player.x + 1024;
 	game.y = -player.y + 1366;
 	// Update enemies