===================================================================
--- original.js
+++ change.js
@@ -27,8 +27,15 @@
 	var hero = self.addChild(new Hero());
 	var enemies = [];
 	var isGameOver = false;
 	var lastSpeedIncrease = 0;
+	var score = 0;
+	var scoreTxt = new Text2('0', {
+		size: 150,
+		fill: '#ffffff'
+	});
+	scoreTxt.anchor.set(.5, 0);
+	LK.gui.topCenter.addChild(scoreTxt);
 	hero.x = 2048 / 2;
 	hero.y = 2732 / 2;
 	var spawnEnemy = function () {
 		var enemy = self.addChild(new Enemy());
@@ -67,8 +74,10 @@
 			}
 			hero.speed += 1;
 			lastSpeedIncrease = LK.ticks;
 		}
+		score += 1;
+		scoreTxt.setText(score);
 		for (var i = 0; i < enemies.length; i++) {
 			enemies[i].chase(hero);
 			if (enemies[i].intersects(hero)) {
 				isGameOver = true;