===================================================================
--- original.js
+++ change.js
@@ -17,8 +17,25 @@
 		self.rotation = Math.atan2(dy, dx);
 		connectionGraphics.width = Math.sqrt(dx * dx + dy * dy);
 	};
 });
+// Class for Letter N
+var LetterN = Container.expand(function () {
+	var self = Container.call(this);
+	var letterNGraphics = self.attachAsset('dot', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.isConnected = false;
+	self.connect = function () {
+		self.isConnected = true;
+		letterNGraphics.tint = 0x00ff00; // Change color to green when connected
+	};
+	self.disconnect = function () {
+		self.isConnected = false;
+		letterNGraphics.tint = 0xff0000; // Change color to red when disconnected
+	};
+});
 //<Assets used in the game will automatically appear here>
 //<Write imports for supported plugins here>
 // Class for Machine
 var Machine = Container.expand(function () {
@@ -51,36 +68,42 @@
 // Initialize machines and connections
 var machines = [];
 var connections = [];
 var selectedMachine = null;
-// Create machines
+// Create machines and letter N
 for (var i = 0; i < 3; i++) {
 	for (var j = 0; j < 3; j++) {
 		var dot = new Machine();
 		dot.x = 250 + i * 250 + 520;
 		dot.y = 250 + j * 250 + 1500;
 		machines.push(dot);
 		game.addChild(dot);
+		if (i == 1 && j == 1) {
+			var letterN = new LetterN();
+			letterN.x = dot.x;
+			letterN.y = dot.y;
+			machines.push(letterN);
+			game.addChild(letterN);
+		}
 	}
 }
 // Handle touch events for machines
 machines.forEach(function (machine) {
 	machine.down = function (x, y, obj) {
 		if (!selectedMachine) {
 			selectedMachine = machine;
+		} else {
+			if (selectedMachine !== machine) {
+				var connection = new Connection();
+				connection.updatePosition(selectedMachine.x, selectedMachine.y, machine.x, machine.y);
+				connections.push(connection);
+				game.addChild(connection);
+				selectedMachine.connect();
+				machine.connect();
+				selectedMachine = null;
+			}
 		}
 	};
-	machine.move = function (x, y, obj) {
-		if (selectedMachine) {
-			var connection = new Connection();
-			connection.updatePosition(selectedMachine.x, selectedMachine.y, x, y);
-			connections.push(connection);
-			game.addChild(connection);
-			selectedMachine.connect();
-			machine.connect();
-			selectedMachine = null;
-		}
-	};
 });
 // Add phone asset to the center bottom of the map
 var M1 = LK.getAsset('M1', {
 	anchorX: 0.5,
@@ -97,13 +120,16 @@
 });
 game.addChildAt(phone, 1);
 // Update game logic
 game.update = function () {
-	// Check if all machines are connected
+	// Check if all machines and the letter N are connected
 	var allConnected = machines.every(function (machine) {
 		return machine.isConnected;
 	});
-	if (allConnected) {
+	var letterNConnected = machines.some(function (machine) {
+		return machine instanceof LetterN && machine.isConnected;
+	});
+	if (allConnected && letterNConnected) {
 		// Display success message
 		var successTxt = new Text2('Unlocked', {
 			size: 100,
 			fill: 0x00FF00