/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.xSpeed = 10.9375;
	self.ySpeed = -20;
	self.gravity = 1;
	self.lift = -15;
	self.flap = function () {
		self.ySpeed = self.lift * 1.5;
		LK.getSound('flap').play();
	};
	self._update_migrated = function () {
		if (game.isMouseDown) {
			self.ySpeed += self.gravity / 3;
		} else {
			self.ySpeed += self.gravity;
		}
		self.y += self.ySpeed;
		self.x += self.xSpeed;
		if (self.y <= 0 || self.y >= 2732) {
			self.speed = -self.speed;
		}
		var targetRotation = Math.atan2(self.ySpeed, self.xSpeed * self.scale.x) / 2;
		birdGraphics.rotation += (targetRotation - birdGraphics.rotation) / 10;
	};
	self.flip = function () {
		self.scale.x *= -1;
	};
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleShadow = self.attachAsset('obstacleShadow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleShadow.rotation = Math.PI / 4;
	var obstacleShadow2 = self.attachAsset('obstacleShadow2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleShadow2.rotation = Math.PI / 4;
	obstacleShadow2.y = -7;
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	obstacleGraphics.rotation = Math.PI / 4;
	self.speed = 5;
	self._move_migrated = function (speed) {
		self.y += speed;
	};
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});

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

/**** 
* Game Code
****/ 
var tutorialTextWhite = new Text2('Tap to Flap\nHold to Float', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact',
	align: 'center'
});
tutorialTextWhite.anchor.set(.5, 1);
tutorialTextWhite.x = -4;
tutorialTextWhite.y = -62;
LK.gui.bottom.addChild(tutorialTextWhite);
var tutorialText = new Text2('Tap to Flap\nHold to Float', {
	size: 150,
	fill: '#3a84f7',
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#222a9a',
	dropShadowBlur: 5,
	dropShadowDistance: 7,
	dropShadowAngle: 0,
	align: 'center'
});
tutorialText.anchor.set(.5, 1);
tutorialText.y = -50;
LK.gui.bottom.addChild(tutorialText);
game.score = 0;
game.obstacleSpeed = 5;
game.obstacleSpeedIncrease = 0.005;
game.maxHealth = 100;
game.currentHealth = 100;
game.speedBoostTimer = 0;
game.speedBoostDuration = 0;
game.isSpeedBoosted = false;
game.baseObstacleSpeed = 5;
game.checkObstacleCollision = function (obstacles) {
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i]._move_migrated();
		var dist = Math.sqrt(Math.pow(bird.x - obstacles[i].x, 2) + Math.pow(bird.y - obstacles[i].y, 2));
		if (dist < 200) {
			game.currentHealth -= 20;
			LK.getSound('bounce').play();
			obstacles[i].destroy();
			obstacles.splice(i, 1);
			if (game.currentHealth <= 0) {
				LK.setScore(game.score);
				LK.getSound('gameOverJingle').play();
				LK.showGameOver();
			}
			break;
		}
	}
};
game.setBackgroundColor(0xadd8e6);
var scoreText = new Text2('0', {
	size: 150,
	fill: '#3a84f7',
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#222a9a',
	dropShadowBlur: 5,
	dropShadowDistance: 7,
	dropShadowAngle: 0
});
scoreText.anchor.set(.5, 0);
LK.gui.top.addChild(scoreText);
var scoreText2 = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact'
});
scoreText2.anchor.set(.5, 0);
scoreText2.x = -4;
scoreText2.y = -5;
LK.gui.top.addChild(scoreText2);
LK.gui.top.addChild(scoreText);
// Health bar background
var healthBarBg = new Text2('████████████████████', {
	size: 60,
	fill: '#444444',
	font: 'Impact'
});
healthBarBg.anchor.set(0, 0);
healthBarBg.x = 120;
healthBarBg.y = 20;
LK.gui.topLeft.addChild(healthBarBg);
// Health bar fill
var healthBarFill = new Text2('████████████████████', {
	size: 60,
	fill: '#00ff00',
	font: 'Impact'
});
healthBarFill.anchor.set(0, 0);
healthBarFill.x = 120;
healthBarFill.y = 20;
LK.gui.topLeft.addChild(healthBarFill);
// Health text
var healthText = new Text2('HP', {
	size: 60,
	fill: '#ffffff',
	font: 'Impact'
});
healthText.anchor.set(0, 0);
healthText.x = 120;
healthText.y = 80;
LK.gui.topLeft.addChild(healthText);
var bird = game.addChild(new Bird());
var leftWall = game.addChild(new Wall());
leftWall.x = 0;
leftWall.y = 1366;
var rightWall = game.addChild(new Wall());
rightWall.x = 2048;
rightWall.y = 1366;
var leftObstacles = [],
	rightObstacles = [],
	bottomObstacles = [];
var bottomObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness * 2;
var obstacleSpawnRandomness = 120;
var obstacleSpawnRandomnessDecrease = 0.025 * (2 / 3);
var obstacleSpawnY = -500;
var leftObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
var rightObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
bird.x = 1024;
bird.y = 1366;
game.isMouseDown = false;
game.isZeroPressed = false;
game.down = function (x, y, obj) {
	bird.flap();
	game.isMouseDown = true;
};
game.up = function (x, y, obj) {
	game.isMouseDown = false;
};
game.keydown = function (key) {
	if (key === '0') {
		game.isZeroPressed = true;
		game.score++;
		LK.setScore(game.score);
		scoreText.setText(game.score);
		scoreText2.setText(game.score);
	}
};
game.keyup = function (key) {
	if (key === '0') {
		game.isZeroPressed = false;
	}
};
game.update = function () {
	bird._update_migrated();
	if (game.isMouseDown && LK.ticks % 15 === 0) {
		bird.flap();
	}
	if (game.isZeroPressed && LK.ticks % 10 === 0) {
		game.score++;
		LK.setScore(game.score);
	}
	if (game.score > 2) {
		tutorialText.y += 5;
		tutorialTextWhite.y += 5;
	}
	scoreText.setText(game.score);
	scoreText2.setText(game.score);
	// Update health bar
	var healthPercentage = game.currentHealth / game.maxHealth;
	var healthBarLength = Math.floor(20 * healthPercentage);
	var healthBarText = '';
	for (var h = 0; h < healthBarLength; h++) {
		healthBarText += '█';
	}
	healthBarFill.setText(healthBarText);
	// Change health bar color based on health level
	if (healthPercentage > 0.6) {
		healthBarFill = new Text2(healthBarText, {
			size: 60,
			fill: '#00ff00',
			font: 'Impact'
		});
	} else if (healthPercentage > 0.3) {
		healthBarFill = new Text2(healthBarText, {
			size: 60,
			fill: '#ffff00',
			font: 'Impact'
		});
	} else {
		healthBarFill = new Text2(healthBarText, {
			size: 60,
			fill: '#ff0000',
			font: 'Impact'
		});
	}
	healthBarFill.anchor.set(0, 0);
	healthBarFill.x = 120;
	healthBarFill.y = 20;
	LK.gui.topLeft.addChild(healthBarFill);
	game.obstacleSpeed += game.obstacleSpeedIncrease;
	// Random speed boost system
	if (!game.isSpeedBoosted && Math.random() < 0.001) {
		// 0.1% chance per frame for speed boost
		game.isSpeedBoosted = true;
		game.speedBoostTimer = LK.ticks;
		game.speedBoostDuration = Math.random() * 300 + 120; // 2-7 seconds at 60fps
		game.baseObstacleSpeed = game.obstacleSpeed;
	}
	// Apply speed boost
	if (game.isSpeedBoosted) {
		var boostMultiplier = 1.3 + Math.random() * 0.4; // 1.3x to 1.7x speed boost
		game.obstacleSpeed = game.baseObstacleSpeed * boostMultiplier;
		// End speed boost after duration
		if (LK.ticks - game.speedBoostTimer > game.speedBoostDuration) {
			game.isSpeedBoosted = false;
			game.obstacleSpeed = game.baseObstacleSpeed;
		}
	}
	obstacleSpawnRandomness -= obstacleSpawnRandomnessDecrease;
	if (obstacleSpawnRandomness < 20) {
		obstacleSpawnRandomness = 20;
	}
	if (LK.ticks >= leftObstacleSpawnTime) {
		var newObstacle = game.addChildAt(new Obstacle(), 0);
		newObstacle.x = Math.random() * (2048 - 600) + 300; // Random x position with margins
		newObstacle.y = obstacleSpawnY;
		leftObstacles.push(newObstacle);
		leftObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (LK.ticks >= rightObstacleSpawnTime) {
		var newObstacle = game.addChildAt(new Obstacle(), 0);
		newObstacle.x = Math.random() * (2048 - 600) + 300; // Random x position with margins
		newObstacle.y = obstacleSpawnY;
		rightObstacles.push(newObstacle);
		rightObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (bird.intersects(leftWall) && bird.xSpeed < 0 || bird.intersects(rightWall) && bird.xSpeed > 0) {
		bird.xSpeed = -bird.xSpeed;
		bird.flip();
		game.score++;
		LK.setScore(game.score);
		LK.getSound('bounce').play();
	}
	for (var i = leftObstacles.length - 1; i >= 0; i--) {
		leftObstacles[i]._move_migrated(game.obstacleSpeed);
		if (leftObstacles[i].y > 3232) {
			leftObstacles[i].destroy();
			leftObstacles.splice(i, 1);
		}
	}
	for (var i = rightObstacles.length - 1; i >= 0; i--) {
		rightObstacles[i]._move_migrated(game.obstacleSpeed);
		if (rightObstacles[i].y > 3232) {
			rightObstacles[i].destroy();
			rightObstacles.splice(i, 1);
		}
	}
	if (LK.ticks >= bottomObstacleSpawnTime) {
		var newObstacle = game.addChildAt(new Obstacle(), 0);
		newObstacle.x = Math.random() * (2048 - 600) + 300; // Random x position with margins
		newObstacle.y = 2732 + 300; // Start below screen
		bottomObstacles.push(newObstacle);
		bottomObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness * 1.5;
	}
	for (var i = bottomObstacles.length - 1; i >= 0; i--) {
		bottomObstacles[i]._move_migrated(-game.obstacleSpeed); // Move upward (negative speed)
		if (bottomObstacles[i].y < -500) {
			bottomObstacles[i].destroy();
			bottomObstacles.splice(i, 1);
		}
	}
	game.checkObstacleCollision(leftObstacles);
	game.checkObstacleCollision(rightObstacles);
	game.checkObstacleCollision(bottomObstacles);
	if (bird.y < 0 || bird.y > 2732) {
		LK.setScore(game.score);
		LK.getSound('gameOverJingle').play();
		LK.showGameOver();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -102,8 +102,12 @@
 game.obstacleSpeed = 5;
 game.obstacleSpeedIncrease = 0.005;
 game.maxHealth = 100;
 game.currentHealth = 100;
+game.speedBoostTimer = 0;
+game.speedBoostDuration = 0;
+game.isSpeedBoosted = false;
+game.baseObstacleSpeed = 5;
 game.checkObstacleCollision = function (obstacles) {
 	for (var i = 0; i < obstacles.length; i++) {
 		obstacles[i]._move_migrated();
 		var dist = Math.sqrt(Math.pow(bird.x - obstacles[i].x, 2) + Math.pow(bird.y - obstacles[i].y, 2));
@@ -262,8 +266,26 @@
 	healthBarFill.x = 120;
 	healthBarFill.y = 20;
 	LK.gui.topLeft.addChild(healthBarFill);
 	game.obstacleSpeed += game.obstacleSpeedIncrease;
+	// Random speed boost system
+	if (!game.isSpeedBoosted && Math.random() < 0.001) {
+		// 0.1% chance per frame for speed boost
+		game.isSpeedBoosted = true;
+		game.speedBoostTimer = LK.ticks;
+		game.speedBoostDuration = Math.random() * 300 + 120; // 2-7 seconds at 60fps
+		game.baseObstacleSpeed = game.obstacleSpeed;
+	}
+	// Apply speed boost
+	if (game.isSpeedBoosted) {
+		var boostMultiplier = 1.3 + Math.random() * 0.4; // 1.3x to 1.7x speed boost
+		game.obstacleSpeed = game.baseObstacleSpeed * boostMultiplier;
+		// End speed boost after duration
+		if (LK.ticks - game.speedBoostTimer > game.speedBoostDuration) {
+			game.isSpeedBoosted = false;
+			game.obstacleSpeed = game.baseObstacleSpeed;
+		}
+	}
 	obstacleSpawnRandomness -= obstacleSpawnRandomnessDecrease;
 	if (obstacleSpawnRandomness < 20) {
 		obstacleSpawnRandomness = 20;
 	}