/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
//<Write entity 'classes' with empty functions for important behavior here>
var ClickableCircle = Container.expand(function () {
	var self = Container.call(this);
	var circleGraphics = self.attachAsset('circle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		// Increase score on click
		LK.setScore(LK.getScore() + 1);
		// Update score text
		scoreTxt.setText(LK.getScore());
		// Play sound 't' on click
		LK.getSound('t').play();
		var scoreText = game.addChild(new ScoreText());
		scoreText.x = 2048 / 2;
		scoreText.y = scoreTxt.y + scoreTxt.height + 100;
		scoreText.alpha = 1;
		// Check if score is a multiple of 100
		if (LK.getScore() % 100 === 0) {
			var congratsText = new Text2('Congratulations!', {
				size: 200,
				fill: 0xFFFFFF
			});
			congratsText.anchor.set(0.5, 0);
			congratsText.x = 2048 / 2;
			congratsText.y = 2732 / 2;
			game.addChild(congratsText);
			// Add a tween to fade out the 'Congratulations!' text after 2 seconds
			tween(congratsText, {
				alpha: 0
			}, {
				duration: 2000
			});
		}
	};
});
var ScoreText = Text2.expand(function () {
	var self = Text2.call(this, '+1', {
		size: 100,
		fill: 0xFFFFFF
	});
	self.anchor.set(0.5, 0);
	self.alpha = 0;
	self.update = function () {
		if (self.alpha > 0) {
			self.alpha -= 0.01;
			self.y -= 1;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
//<Write game logic code here, including initializing arrays and variables>
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var circle = game.addChild(new ClickableCircle());
circle.x = 2048 / 2;
circle.y = 2732 / 2;
game.update = function () {
	// Game logic updates
};

===================================================================
--- original.js
+++ change.js
@@ -1,5 +1,10 @@
 /**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
 * Classes
 ****/ 
 //<Assets used in the game will automatically appear here>
 //<Write imports for supported plugins here>
@@ -30,8 +35,14 @@
 			congratsText.anchor.set(0.5, 0);
 			congratsText.x = 2048 / 2;
 			congratsText.y = 2732 / 2;
 			game.addChild(congratsText);
+			// Add a tween to fade out the 'Congratulations!' text after 2 seconds
+			tween(congratsText, {
+				alpha: 0
+			}, {
+				duration: 2000
+			});
 		}
 	};
 });
 var ScoreText = Text2.expand(function () {