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

/**** 
* Classes
****/ 
var Particle = Container.expand(function () {
	var self = Container.call(this);
	var particleGraphics = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
var Square = Container.expand(function () {
	var self = Container.call(this);
	var squareGraphics = self.attachAsset('square', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		tween(self, {
			scaleX: Math.random() * 10 + 1,
			scaleY: Math.random() * 10 + 1,
			tint: [0xffffff, 0xff0000, 0x00ff00, 0xffff00, 0x00ffff, 0xff00ff][6 * Math.random() >> 0]
		}, {
			duration: 1000,
			easing: tween.bounceOut
		});
		game.children.forEach(function (child) {
			if (child instanceof Particle) {
				tween(child, {
					x: Math.random() * 2048,
					y: Math.random() * 2732
				}, {
					duration: 1000,
					easing: tween.bounceIn
				});
			}
		});
	};
});

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

/**** 
* Game Code
****/ 
for (var i = 0; i < 100; i++) {
	var particle = game.addChild(new Particle());
	particle.x = Math.random() * 2048;
	particle.y = Math.random() * 2732;
}
var square = game.addChild(new Square());
square.x = 1024;
square.y = 1366;

===================================================================
--- original.js
+++ change.js
@@ -34,9 +34,9 @@
 					x: Math.random() * 2048,
 					y: Math.random() * 2732
 				}, {
 					duration: 1000,
-					easing: tween.bounceOut
+					easing: tween.bounceIn
 				});
 			}
 		});
 	};