/**** 
* Classes
****/ 
// Define the Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.jumpSpeed = -30;
	self.gravity = 1;
	self.isJumping = false;
	self.isFalling = false;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.jumpSpeed;
			self.jumpSpeed += self.gravity;
			if (self.jumpSpeed >= 0) {
				self.isJumping = false;
				self.isFalling = true;
			}
		} else if (self.isFalling) {
			self.y += self.jumpSpeed;
			self.jumpSpeed += self.gravity;
			if (self.y >= game.groundLevel) {
				self.y = game.groundLevel;
				self.isFalling = false;
				self.jumpSpeed = -30;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping && !self.isFalling) {
			self.isJumping = true;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
// Initialize game variables
game.groundLevel = 2500;
game.obstacles = [];
game.score = 0;
// Create player instance
var player = game.addChild(new Player());
player.x = 200;
player.y = game.groundLevel;
// Create score text
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Function to handle player jump
game.down = function (x, y, obj) {
	player.jump();
};
// Function to spawn obstacles
function spawnObstacle() {
	var obstacle = new Obstacle();
	obstacle.x = 2048;
	obstacle.y = game.groundLevel;
	game.obstacles.push(obstacle);
	game.addChild(obstacle);
}
// Update game state
game.update = function () {
	player.update();
	for (var i = game.obstacles.length - 1; i >= 0; i--) {
		game.obstacles[i].update();
		if (player.intersects(game.obstacles[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	if (LK.ticks % 60 == 0) {
		spawnObstacle();
		game.score++;
		scoreTxt.setText(game.score);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -24,9 +24,9 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 10;
-	self.jumpSpeed = -60;
+	self.jumpSpeed = -30;
 	self.gravity = 1;
 	self.isJumping = false;
 	self.isFalling = false;
 	self.update = function () {
@@ -42,9 +42,9 @@
 			self.jumpSpeed += self.gravity;
 			if (self.y >= game.groundLevel) {
 				self.y = game.groundLevel;
 				self.isFalling = false;
-				self.jumpSpeed = -60;
+				self.jumpSpeed = -30;
 			}
 		}
 	};
 	self.jump = function () {