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

/**** 
* Classes
****/ 
var FallingItem = Container.expand(function () {
	var self = Container.call(this);
	self.type = "banana"; // default type
	self.speed = 2; // default speed
	self.lastY = 0;
	self.active = true;
	self.graphics = null;
	self.init = function (type, speed) {
		self.type = type || "banana";
		self.speed = speed || 2;
		// Remove any existing graphics
		if (self.graphics) {
			self.removeChild(self.graphics);
		}
		// Create the appropriate graphics based on type
		if (self.type === "banana") {
			self.graphics = self.attachAsset('banana', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else if (self.type === "bomb") {
			self.graphics = self.attachAsset('bomb', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		}
		// Set initial position
		self.x = Math.random() * (2048 - 200) + 100;
		self.y = -100;
		self.lastY = self.y;
		// Interactive for tapping
		self.interactive = true;
	};
	self.update = function () {
		if (!self.active) return;
		self.lastY = self.y;
		self.y += self.speed;
	};
	self.down = function (x, y, obj) {
		if (!self.active) return;
		if (self.type === "banana") {
			// Scored a point by tapping banana
			LK.setScore(LK.getScore() + 1);
			LK.getSound('pop').play();
			self.remove();
		} else if (self.type === "bomb") {
			// Lost a life by tapping bomb
			LK.getSound('explosion').play();
			decreaseLife();
			self.remove();
		}
	};
	self.remove = function () {
		self.active = false;
		tween(self, {
			alpha: 0,
			scaleX: 0.3,
			scaleY: 0.3
		}, {
			duration: 200,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});

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

/**** 
* Game Code
****/ 
;
// Game constants
var SCREEN_WIDTH = 2048;
var SCREEN_HEIGHT = 2732;
var MAX_LIVES = 3;
var BOMB_THRESHOLD_SCORE = 15;
var SPAWN_INTERVAL_INITIAL = 60; // frames
var MIN_SPAWN_INTERVAL = 20; // frames
var INTERVAL_DECREMENT = 1;
// Game variables
var fallingItems = [];
var lives = MAX_LIVES;
var spawnCounter = 0;
var currentSpawnInterval = SPAWN_INTERVAL_INITIAL;
var currentSpeed = 2;
var isGameOver = false;
// Add background
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
// Initialize score text
var scoreText = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
scoreText.x = SCREEN_WIDTH / 2;
scoreText.y = 50;
game.addChild(scoreText);
// Create hearts container
var heartsContainer = new Container();
heartsContainer.x = 50;
heartsContainer.y = 50;
game.addChild(heartsContainer);
// Initialize hearts display
function initLives() {
	// Clear existing hearts
	while (heartsContainer.children.length > 0) {
		heartsContainer.removeChildAt(0);
	}
	// Add hearts based on current lives
	for (var i = 0; i < lives; i++) {
		var heart = LK.getAsset('heart', {
			anchorX: 0,
			anchorY: 0,
			x: i * 100,
			y: 0
		});
		heartsContainer.addChild(heart);
	}
}
// Function to decrease life
function decreaseLife() {
	lives--;
	initLives();
	// Shake the screen
	LK.effects.flashScreen(0xff0000, 300);
	// Check for game over
	if (lives <= 0) {
		gameOver();
	}
}
// Function to handle game over
function gameOver() {
	if (isGameOver) return;
	isGameOver = true;
	LK.getSound('gameover').play();
	LK.effects.flashScreen(0xff0000, 1000);
	// Remove all falling items
	for (var i = fallingItems.length - 1; i >= 0; i--) {
		fallingItems[i].destroy();
	}
	fallingItems = [];
	// Show game over screen
	LK.setTimeout(function () {
		LK.showGameOver();
	}, 1000);
}
// Function to spawn a new falling item
function spawnItem() {
	var isBomb = LK.getScore() >= BOMB_THRESHOLD_SCORE && Math.random() < 0.3;
	var itemType = isBomb ? "bomb" : "banana";
	var item = new FallingItem();
	item.init(itemType, currentSpeed);
	fallingItems.push(item);
	game.addChild(item);
	return item;
}
// Update game state each frame
game.update = function () {
	if (isGameOver) return;
	// Update all falling items
	for (var i = fallingItems.length - 1; i >= 0; i--) {
		var item = fallingItems[i];
		// Check if item has fallen off screen
		if (item.lastY < SCREEN_HEIGHT && item.y >= SCREEN_HEIGHT) {
			if (item.type === "banana" && item.active) {
				// Missed a banana - lose a life
				decreaseLife();
				item.remove();
			} else if (item.type === "bomb" && item.active) {
				// Bomb fell off screen - remove it with no penalty
				item.destroy();
				fallingItems.splice(i, 1);
			}
		}
		// Remove destroyed items from array
		if (!item.active || item.alpha <= 0) {
			fallingItems.splice(i, 1);
		}
	}
	// Spawn new items at intervals
	spawnCounter++;
	if (spawnCounter >= currentSpawnInterval) {
		spawnItem();
		spawnCounter = 0;
		// Increase difficulty based on score thresholds
		var score = LK.getScore();
		// Set speed multiplier based on score thresholds
		var speedMultiplier = 1;
		if (score >= 20) {
			speedMultiplier = 5;
		} else if (score >= 10) {
			speedMultiplier = 3;
		} else if (score >= 5) {
			speedMultiplier = 2;
		}
		currentSpeed = 2 * speedMultiplier;
		currentSpawnInterval = Math.max(MIN_SPAWN_INTERVAL, SPAWN_INTERVAL_INITIAL - score * INTERVAL_DECREMENT);
	}
	// Update score text
	scoreText.setText('Score: ' + LK.getScore());
};
// Initialize the game
function initGame() {
	// Reset game variables
	lives = MAX_LIVES;
	LK.setScore(0);
	spawnCounter = 0;
	currentSpawnInterval = SPAWN_INTERVAL_INITIAL;
	currentSpeed = 2;
	isGameOver = false;
	fallingItems = [];
	// Initialize UI
	initLives();
	scoreText.setText('Score: 0');
	// Play background music
	LK.playMusic('gameMusic');
}
// Start the game
initGame();

===================================================================
--- original.js
+++ change.js
@@ -91,9 +91,8 @@
 var MAX_LIVES = 3;
 var BOMB_THRESHOLD_SCORE = 15;
 var SPAWN_INTERVAL_INITIAL = 60; // frames
 var MIN_SPAWN_INTERVAL = 20; // frames
-var SPEED_INCREMENT = 0.1;
 var INTERVAL_DECREMENT = 1;
 // Game variables
 var fallingItems = [];
 var lives = MAX_LIVES;
@@ -201,11 +200,20 @@
 	spawnCounter++;
 	if (spawnCounter >= currentSpawnInterval) {
 		spawnItem();
 		spawnCounter = 0;
-		// Increase difficulty based on score
+		// Increase difficulty based on score thresholds
 		var score = LK.getScore();
-		currentSpeed = 2 + score * SPEED_INCREMENT;
+		// Set speed multiplier based on score thresholds
+		var speedMultiplier = 1;
+		if (score >= 20) {
+			speedMultiplier = 5;
+		} else if (score >= 10) {
+			speedMultiplier = 3;
+		} else if (score >= 5) {
+			speedMultiplier = 2;
+		}
+		currentSpeed = 2 * speedMultiplier;
 		currentSpawnInterval = Math.max(MIN_SPAWN_INTERVAL, SPAWN_INTERVAL_INITIAL - score * INTERVAL_DECREMENT);
 	}
 	// Update score text
 	scoreText.setText('Score: ' + LK.getScore());