===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,214 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Coin = Container.expand(function () {
+	var self = Container.call(this);
+	var coinGraphics = self.attachAsset('coin', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.collected = false;
+	self.update = function () {
+		// Gentle rotation animation
+		coinGraphics.rotation += 0.05;
+		// Gentle floating animation
+		self.y += Math.sin(LK.ticks * 0.1 + self.x * 0.01) * 0.5;
+	};
+	return self;
+});
+var Jet = Container.expand(function () {
+	var self = Container.call(this);
+	var jetGraphics = self.attachAsset('jet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.targetX = 0;
+	self.targetY = 0;
+	self.speed = 0.15;
+	self.update = function () {
+		// Smooth movement towards target position
+		var dx = self.targetX - self.x;
+		var dy = self.targetY - self.y;
+		self.x += dx * self.speed;
+		self.y += dy * self.speed;
+	};
+	return self;
+});
+var Missile = Container.expand(function () {
+	var self = Container.call(this);
+	var missileGraphics = self.attachAsset('missile', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 2;
+	self.targetX = 0;
+	self.targetY = 0;
+	self.update = function () {
+		// Home in on target position
+		var dx = self.targetX - self.x;
+		var dy = self.targetY - self.y;
+		var distance = Math.sqrt(dx * dx + dy * dy);
+		if (distance > 0) {
+			self.x += dx / distance * self.speed;
+			self.y += dy / distance * self.speed;
+			// Rotate missile to face movement direction
+			missileGraphics.rotation = Math.atan2(dy, dx) + Math.PI / 2;
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x87ceeb
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var jet;
+var coins = [];
+var missiles = [];
+var nextCoinSpawn = 0;
+var nextMissileSpawn = 180; // 3 seconds at 60fps
+var missileSpawnRate = 180;
+var minMissileSpawnRate = 60; // Minimum 1 second between missiles
+// UI elements
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Initialize jet
+jet = game.addChild(new Jet());
+jet.x = 2048 / 2;
+jet.y = 2732 / 2;
+jet.targetX = jet.x;
+jet.targetY = jet.y;
+// Spawn initial coins
+function spawnCoin() {
+	var coin = new Coin();
+	coin.x = Math.random() * 1900 + 100; // Keep within screen bounds
+	coin.y = Math.random() * 2500 + 100;
+	coins.push(coin);
+	game.addChild(coin);
+}
+// Spawn initial missiles
+function spawnMissile() {
+	var missile = new Missile();
+	// Spawn from random edge of screen
+	var edge = Math.floor(Math.random() * 4);
+	switch (edge) {
+		case 0:
+			// Top
+			missile.x = Math.random() * 2048;
+			missile.y = -50;
+			break;
+		case 1:
+			// Right
+			missile.x = 2098;
+			missile.y = Math.random() * 2732;
+			break;
+		case 2:
+			// Bottom
+			missile.x = Math.random() * 2048;
+			missile.y = 2782;
+			break;
+		case 3:
+			// Left
+			missile.x = -50;
+			missile.y = Math.random() * 2732;
+			break;
+	}
+	missile.targetX = jet.x;
+	missile.targetY = jet.y;
+	missiles.push(missile);
+	game.addChild(missile);
+}
+// Initial coin spawning
+for (var i = 0; i < 5; i++) {
+	spawnCoin();
+}
+// Game controls
+game.move = function (x, y, obj) {
+	jet.targetX = x;
+	jet.targetY = y;
+};
+game.down = function (x, y, obj) {
+	jet.targetX = x;
+	jet.targetY = y;
+};
+// Main game loop
+game.update = function () {
+	// Update missile spawn rate (increase difficulty)
+	if (LK.ticks % 300 === 0 && missileSpawnRate > minMissileSpawnRate) {
+		missileSpawnRate -= 5;
+	}
+	// Spawn coins
+	if (LK.ticks >= nextCoinSpawn) {
+		spawnCoin();
+		nextCoinSpawn = LK.ticks + Math.random() * 120 + 60; // 1-3 seconds
+	}
+	// Spawn missiles
+	if (LK.ticks >= nextMissileSpawn) {
+		spawnMissile();
+		nextMissileSpawn = LK.ticks + missileSpawnRate;
+	}
+	// Update missile targets to current jet position
+	for (var i = 0; i < missiles.length; i++) {
+		missiles[i].targetX = jet.x;
+		missiles[i].targetY = jet.y;
+	}
+	// Check coin collection
+	for (var i = coins.length - 1; i >= 0; i--) {
+		var coin = coins[i];
+		if (!coin.collected && jet.intersects(coin)) {
+			coin.collected = true;
+			LK.setScore(LK.getScore() + 1);
+			scoreTxt.setText(LK.getScore().toString());
+			// Coin collection effect
+			tween(coin, {
+				scaleX: 1.5,
+				scaleY: 1.5,
+				alpha: 0
+			}, {
+				duration: 200,
+				onFinish: function onFinish() {
+					coin.destroy();
+				}
+			});
+			coins.splice(i, 1);
+			LK.getSound('collect').play();
+			// Spawn new coin
+			spawnCoin();
+		}
+	}
+	// Check missile collisions
+	for (var i = 0; i < missiles.length; i++) {
+		var missile = missiles[i];
+		if (jet.intersects(missile)) {
+			// Game over
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.getSound('explosion').play();
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Clean up off-screen missiles
+	for (var i = missiles.length - 1; i >= 0; i--) {
+		var missile = missiles[i];
+		if (missile.x < -100 || missile.x > 2148 || missile.y < -100 || missile.y > 2832) {
+			missile.destroy();
+			missiles.splice(i, 1);
+		}
+	}
+};
\ No newline at end of file