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

/**** 
* Classes
****/ 
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.collect = function () {
		if (self.collected) return;
		self.collected = true;
		LK.getSound('coinCollect').play();
		// Add coin to storage
		var currentCoins = storage.coins || 0;
		var coinValue = 1;
		// Check if coin multiplier is active
		if (storage.ownedPowerups && storage.ownedPowerups.coinMultiplier) {
			coinValue = 2;
		}
		storage.coins = currentCoins + coinValue;
		// Update coin display
		coinsTxt.setText('Coins: ' + storage.coins);
		self.destroy();
	};
	return self;
});
var Fish = Container.expand(function () {
	var self = Container.call(this);
	var fishGraphics = self.attachAsset('fish', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.jumpSpeed = -8;
	self.gravity = 0.4;
	self.velocityY = self.jumpSpeed;
	self.startY = 0;
	self.jump = function () {
		self.velocityY = self.jumpSpeed;
		LK.getSound('fishJump').play();
	};
	self.update = function () {
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		if (self.y > self.startY + 100) {
			self.destroy();
		}
	};
	return self;
});
var Frog = Container.expand(function (frogType) {
	var self = Container.call(this);
	self.frogType = frogType || 'normal';
	var frogGraphics = self.attachAsset('frog', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isJumping = false;
	self.currentStone = null;
	self.jumpSpeed = 8;
	self.targetX = 0;
	self.targetY = 0;
	self.doubleJumpUsed = false;
	// Apply frog abilities based on type
	if (self.frogType === 'fast') {
		self.jumpSpeed = 12;
		frogGraphics.tint = 0xff6b6b;
	} else if (self.frogType === 'jumper') {
		self.jumpSpeed = 10;
		frogGraphics.tint = 0x4ecdc4;
	} else if (self.frogType === 'double') {
		frogGraphics.tint = 0xffe66d;
	}
	self.jumpTo = function (stone) {
		if (self.isJumping) return;
		self.isJumping = true;
		self.targetX = stone.x;
		self.targetY = stone.y - 50;
		if (self.currentStone) {
			self.currentStone.startSinking();
		}
		self.currentStone = stone;
		LK.getSound('jump').play();
		var jumpDistance = Math.sqrt(Math.pow(self.targetX - self.x, 2) + Math.pow(self.targetY - self.y, 2));
		var jumpDuration = jumpDistance / self.jumpSpeed * 16.67; // Convert to ms
		tween(self, {
			x: self.targetX,
			y: self.targetY
		}, {
			duration: jumpDuration,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.isJumping = false;
				if (self.frogType === 'double') {
					self.doubleJumpUsed = false;
				}
				if (stone.stoneType === 'slippery') {
					var slipAmount = (Math.random() - 0.5) * 40;
					self.x += slipAmount;
				}
			}
		});
	};
	self.doubleJump = function (stone) {
		if (self.frogType !== 'double' || self.doubleJumpUsed) return;
		self.doubleJumpUsed = true;
		self.isJumping = false; // Reset jumping state to allow new jump
		self.jumpTo(stone);
	};
	return self;
});
var Stone = Container.expand(function (stoneType) {
	var self = Container.call(this);
	self.stoneType = stoneType || 'regular';
	self.sinkTimer = 0;
	self.maxSinkTime = 180; // 3 seconds at 60fps
	self.isOccupied = false;
	self.originalY = 0;
	self.moveSpeed = 0;
	var assetName = 'stone';
	if (self.stoneType === 'moving') {
		assetName = 'movingStone';
		self.moveSpeed = Math.random() * 2 - 1; // -1 to 1
	} else if (self.stoneType === 'slippery') {
		assetName = 'slipperyStone';
	}
	var stoneGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.startSinking = function () {
		self.isOccupied = true;
		self.sinkTimer = 0;
	};
	self.update = function () {
		if (self.isOccupied) {
			// Stone disappears immediately when frog is on it
			self.destroy();
			return;
		}
		if (self.stoneType === 'moving') {
			self.x += self.moveSpeed;
			if (self.x < 60 || self.x > 1988) {
				self.moveSpeed *= -1;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0077BE
});

/**** 
* Game Code
****/ 
var gameStarted = false;
var titleTxt = null;
var playButton = null;
var storeButton = null;
var showingStore = false;
var storeItems = [];
var storeTexts = [];
var waterBackground = game.addChild(LK.getAsset('water', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
}));
var stones = [];
var fishes = [];
var coins = [];
var currentFrogType = storage.selectedFrog || 'normal';
var frogPrices = {
	'normal': 0,
	'fast': 50,
	'jumper': 75,
	'double': 100
};
var frogNames = {
	'normal': 'Normal Frog',
	'fast': 'Fast Frog',
	'jumper': 'High Jumper',
	'double': 'Double Jump'
};
var powerupPrices = {
	'coinMultiplier': 200
};
var powerupNames = {
	'coinMultiplier': 'Coin Multiplier x2'
};
var frog = game.addChild(new Frog(currentFrogType));
var level = 1;
var crossingCount = 0;
var fishSpawnTimer = 0;
var coinSpawnTimer = 0;
var maxDistance = 0;
var startY = 2650;
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 120;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
// Level display
var levelTxt = new Text2('Level: 1', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(levelTxt);
// Coins display
var coinsTxt = new Text2('Coins: ' + (storage.coins || 0), {
	size: 50,
	fill: 0xffd700
});
coinsTxt.anchor.set(0, 0);
coinsTxt.x = 120;
coinsTxt.y = 120;
LK.gui.topLeft.addChild(coinsTxt);
// Distance display
var distanceTxt = new Text2('Distance: 0m', {
	size: 50,
	fill: 0xFFFFFF
});
distanceTxt.anchor.set(1, 0);
distanceTxt.x = -20;
distanceTxt.y = 60;
LK.gui.topRight.addChild(distanceTxt);
function createStoneRow(y, count) {
	var stoneSpacing = 2048 / (count + 1);
	for (var i = 0; i < count; i++) {
		var stoneType = 'regular';
		var rand = Math.random();
		// Increase probability of special stones with level
		var movingChance = Math.min(0.4, 0.1 + level * 0.05);
		var slipperyChance = Math.min(0.3, 0.1 + level * 0.04);
		if (level > 1 && rand < movingChance) {
			stoneType = 'moving';
		} else if (level > 2 && rand < movingChance + slipperyChance) {
			stoneType = 'slippery';
		}
		var stone = new Stone(stoneType);
		stone.x = stoneSpacing * (i + 1) + (Math.random() - 0.5) * 100;
		stone.y = y;
		stone.originalY = y;
		stones.push(stone);
		game.addChild(stone);
		// Spawn coin randomly on some stones
		if (Math.random() < 0.3) {
			var coin = new Coin();
			coin.x = stone.x;
			coin.y = stone.y - 40;
			coins.push(coin);
			game.addChild(coin);
		}
	}
}
function initializeLevel() {
	// Clear existing stones
	for (var i = stones.length - 1; i >= 0; i--) {
		stones[i].destroy();
	}
	stones = [];
	// Create stone rows
	var rows = 6 + level;
	var rowSpacing = 2200 / rows;
	for (var row = 0; row < rows; row++) {
		var y = 2600 - row * rowSpacing;
		var stoneCount = 3 + Math.floor(Math.random() * 3);
		createStoneRow(y, stoneCount);
	}
	// Position frog at start
	frog.x = 1024;
	frog.y = 2650;
	frog.currentStone = null;
	frog.isJumping = false;
}
function spawnFish() {
	if (Math.random() < 0.3) {
		var fish = new Fish();
		fish.x = Math.random() * 1800 + 124;
		fish.y = Math.random() * 1800 + 400;
		fish.startY = fish.y;
		fish.jump();
		fishes.push(fish);
		game.addChild(fish);
	}
}
function checkWinCondition() {
	// Count remaining stones (not destroyed or sinking)
	var remainingStones = 0;
	for (var i = 0; i < stones.length; i++) {
		if (!stones[i].destroyed && !stones[i].isOccupied) {
			remainingStones++;
		}
	}
	// Check if only one stone remains
	if (remainingStones === 1) {
		crossingCount++;
		LK.setScore(LK.getScore() + 100 + level * 20);
		level++;
		levelTxt.setText('Level: ' + level);
		// Clear existing coins
		for (var i = coins.length - 1; i >= 0; i--) {
			coins[i].destroy();
		}
		coins = [];
		// Clear existing fish
		for (var i = fishes.length - 1; i >= 0; i--) {
			fishes[i].destroy();
		}
		fishes = [];
		initializeLevel();
	}
}
function checkGameOver() {
	// Check if frog fell in water
	if (frog.y > 2650 && !frog.isJumping) {
		LK.getSound('splash').play();
		LK.showGameOver();
		return;
	}
	// Check fish collision
	for (var i = fishes.length - 1; i >= 0; i--) {
		var fish = fishes[i];
		if (frog.intersects(fish)) {
			LK.getSound('splash').play();
			LK.showGameOver();
			return;
		}
	}
}
function showStartMenu() {
	// Create title text
	titleTxt = new Text2('FROGGY RIVER RUSH', {
		size: 120,
		fill: 0xFFFFFF
	});
	titleTxt.anchor.set(0.5, 0.5);
	titleTxt.x = 1024;
	titleTxt.y = 800;
	game.addChild(titleTxt);
	// Create play button
	playButton = game.addChild(LK.getAsset('stone', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1200
	}));
	var playTxt = new Text2('PLAY', {
		size: 80,
		fill: 0x000000
	});
	playTxt.anchor.set(0.5, 0.5);
	playTxt.x = 1024;
	playTxt.y = 1200;
	game.addChild(playTxt);
	// Create store button
	storeButton = game.addChild(LK.getAsset('stone', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1400
	}));
	var storeTxt = new Text2('STORE', {
		size: 80,
		fill: 0x000000
	});
	storeTxt.anchor.set(0.5, 0.5);
	storeTxt.x = 1024;
	storeTxt.y = 1400;
	game.addChild(storeTxt);
}
function showStore() {
	showingStore = true;
	if (titleTxt) titleTxt.destroy();
	if (playButton) playButton.destroy();
	if (storeButton) storeButton.destroy();
	// Remove menu text by destroying all text children except UI
	var gameChildren = game.children.slice();
	for (var i = 0; i < gameChildren.length; i++) {
		if (gameChildren[i] instanceof Text2) {
			gameChildren[i].destroy();
		}
	}
	// Create store title
	var storeTitleTxt = new Text2('FROG STORE', {
		size: 100,
		fill: 0xFFFFFF
	});
	storeTitleTxt.anchor.set(0.5, 0.5);
	storeTitleTxt.x = 1024;
	storeTitleTxt.y = 400;
	game.addChild(storeTitleTxt);
	storeTexts.push(storeTitleTxt);
	// Show coins
	var coinsDisplayTxt = new Text2('Coins: ' + (storage.coins || 0), {
		size: 60,
		fill: 0xffd700
	});
	coinsDisplayTxt.anchor.set(0.5, 0.5);
	coinsDisplayTxt.x = 1024;
	coinsDisplayTxt.y = 500;
	game.addChild(coinsDisplayTxt);
	storeTexts.push(coinsDisplayTxt);
	// Create frog items
	var frogTypes = ['normal', 'fast', 'double'];
	for (var i = 0; i < frogTypes.length; i++) {
		var frogType = frogTypes[i];
		var yPos = 700 + i * 200;
		// Create frog preview
		var frogPreview = game.addChild(LK.getAsset('frog', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 400,
			y: yPos
		}));
		if (frogType === 'fast') {
			frogPreview.tint = 0xff6b6b;
		} else if (frogType === 'jumper') {
			frogPreview.tint = 0x4ecdc4;
		} else if (frogType === 'double') {
			frogPreview.tint = 0xffe66d;
		}
		storeItems.push(frogPreview);
		// Create name and price text
		var isOwned = storage.ownedFrogs && storage.ownedFrogs[frogType];
		var isSelected = currentFrogType === frogType;
		var price = frogPrices[frogType];
		var statusText = '';
		if (isSelected) {
			statusText = ' (SELECTED)';
		} else if (isOwned || price === 0) {
			statusText = ' (OWNED)';
		} else {
			statusText = ' - ' + price + ' coins';
		}
		var frogNameTxt = new Text2(frogNames[frogType] + statusText, {
			size: 50,
			fill: isSelected ? 0x00ff00 : 0xFFFFFF
		});
		frogNameTxt.anchor.set(0, 0.5);
		frogNameTxt.x = 500;
		frogNameTxt.y = yPos;
		game.addChild(frogNameTxt);
		storeTexts.push(frogNameTxt);
		// Store frog type for purchase detection
		frogPreview.frogType = frogType;
	}
	// Create powerup items
	var powerupTypes = ['coinMultiplier'];
	for (var i = 0; i < powerupTypes.length; i++) {
		var powerupType = powerupTypes[i];
		var yPos = 1400 + i * 200;
		// Create powerup preview (using coin asset)
		var powerupPreview = game.addChild(LK.getAsset('coin', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 400,
			y: yPos
		}));
		powerupPreview.tint = 0x00ff00; // Green tint for powerups
		storeItems.push(powerupPreview);
		// Create name and price text
		var isOwned = storage.ownedPowerups && storage.ownedPowerups[powerupType];
		var price = powerupPrices[powerupType];
		var statusText = '';
		if (isOwned) {
			statusText = ' (OWNED)';
		} else {
			statusText = ' - ' + price + ' coins';
		}
		var powerupNameTxt = new Text2(powerupNames[powerupType] + statusText, {
			size: 50,
			fill: isOwned ? 0x00ff00 : 0xFFFFFF
		});
		powerupNameTxt.anchor.set(0, 0.5);
		powerupNameTxt.x = 500;
		powerupNameTxt.y = yPos;
		game.addChild(powerupNameTxt);
		storeTexts.push(powerupNameTxt);
		// Store powerup type for purchase detection
		powerupPreview.powerupType = powerupType;
	}
	// Create back button
	var backButton = game.addChild(LK.getAsset('stone', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 2200
	}));
	var backTxt = new Text2('BACK', {
		size: 80,
		fill: 0x000000
	});
	backTxt.anchor.set(0.5, 0.5);
	backTxt.x = 1024;
	backTxt.y = 2200;
	game.addChild(backTxt);
	storeItems.push(backButton);
	storeTexts.push(backTxt);
	backButton.isBackButton = true;
}
function startGame() {
	gameStarted = true;
	showingStore = false;
	if (titleTxt) titleTxt.destroy();
	if (playButton) playButton.destroy();
	if (storeButton) storeButton.destroy();
	// Clean up store items
	for (var i = 0; i < storeItems.length; i++) {
		storeItems[i].destroy();
	}
	storeItems = [];
	// Clean up store texts
	for (var i = 0; i < storeTexts.length; i++) {
		storeTexts[i].destroy();
	}
	storeTexts = [];
	// Remove play text by destroying all text children except UI
	var gameChildren = game.children.slice();
	for (var i = 0; i < gameChildren.length; i++) {
		if (gameChildren[i] instanceof Text2) {
			gameChildren[i].destroy();
		}
	}
	initializeLevel();
}
// Show start menu instead of initializing level
showStartMenu();
game.down = function (x, y, obj) {
	if (!gameStarted && !showingStore) {
		// Check if play button was clicked
		if (playButton) {
			var distance = Math.sqrt(Math.pow(x - playButton.x, 2) + Math.pow(y - playButton.y, 2));
			if (distance < 100) {
				startGame();
				return;
			}
		}
		// Check if store button was clicked
		if (storeButton) {
			var distance = Math.sqrt(Math.pow(x - storeButton.x, 2) + Math.pow(y - storeButton.y, 2));
			if (distance < 100) {
				showStore();
				return;
			}
		}
		return;
	}
	if (showingStore) {
		// Handle store interactions
		for (var i = 0; i < storeItems.length; i++) {
			var item = storeItems[i];
			var distance = Math.sqrt(Math.pow(x - item.x, 2) + Math.pow(y - item.y, 2));
			if (distance < 100) {
				if (item.isBackButton) {
					showingStore = false;
					// Clean up store
					for (var j = 0; j < storeItems.length; j++) {
						storeItems[j].destroy();
					}
					storeItems = [];
					for (var j = 0; j < storeTexts.length; j++) {
						storeTexts[j].destroy();
					}
					storeTexts = [];
					showStartMenu();
					return;
				} else if (item.frogType) {
					// Try to buy/select frog
					var frogType = item.frogType;
					var price = frogPrices[frogType];
					var isOwned = storage.ownedFrogs && storage.ownedFrogs[frogType];
					var currentCoins = storage.coins || 0;
					if (price === 0 || isOwned) {
						// Select this frog
						storage.selectedFrog = frogType;
						currentFrogType = frogType;
						// Refresh store display
						showingStore = false;
						for (var j = 0; j < storeItems.length; j++) {
							storeItems[j].destroy();
						}
						storeItems = [];
						for (var j = 0; j < storeTexts.length; j++) {
							storeTexts[j].destroy();
						}
						storeTexts = [];
						showStore();
					} else if (currentCoins >= price) {
						// Buy frog
						storage.coins = currentCoins - price;
						if (!storage.ownedFrogs) storage.ownedFrogs = {};
						storage.ownedFrogs[frogType] = true;
						storage.selectedFrog = frogType;
						currentFrogType = frogType;
						// Update coin display
						coinsTxt.setText('Coins: ' + storage.coins);
						// Refresh store display
						showingStore = false;
						for (var j = 0; j < storeItems.length; j++) {
							storeItems[j].destroy();
						}
						storeItems = [];
						for (var j = 0; j < storeTexts.length; j++) {
							storeTexts[j].destroy();
						}
						storeTexts = [];
						showStore();
					}
				} else if (item.powerupType) {
					// Try to buy powerup
					var powerupType = item.powerupType;
					var price = powerupPrices[powerupType];
					var isOwned = storage.ownedPowerups && storage.ownedPowerups[powerupType];
					var currentCoins = storage.coins || 0;
					if (!isOwned && currentCoins >= price) {
						// Buy powerup
						storage.coins = currentCoins - price;
						if (!storage.ownedPowerups) storage.ownedPowerups = {};
						storage.ownedPowerups[powerupType] = true;
						// Update coin display
						coinsTxt.setText('Coins: ' + storage.coins);
						// Refresh store display
						showingStore = false;
						for (var j = 0; j < storeItems.length; j++) {
							storeItems[j].destroy();
						}
						storeItems = [];
						for (var j = 0; j < storeTexts.length; j++) {
							storeTexts[j].destroy();
						}
						storeTexts = [];
						showStore();
					}
				}
				break;
			}
		}
		return;
	}
	if (frog.isJumping && frog.frogType !== 'double') return;
	if (frog.isJumping && frog.frogType === 'double' && frog.doubleJumpUsed) return;
	var nearestStone = null;
	var nearestDistance = Infinity;
	for (var i = 0; i < stones.length; i++) {
		var stone = stones[i];
		var distance = Math.sqrt(Math.pow(x - stone.x, 2) + Math.pow(y - stone.y, 2));
		if (distance < 150 && distance < nearestDistance) {
			nearestDistance = distance;
			nearestStone = stone;
		}
	}
	if (nearestStone && !nearestStone.isOccupied) {
		if (frog.isJumping && frog.frogType === 'double') {
			frog.doubleJump(nearestStone);
		} else {
			frog.jumpTo(nearestStone);
		}
		LK.setScore(LK.getScore() + 10);
		scoreTxt.setText('Score: ' + LK.getScore());
	}
};
game.update = function () {
	if (!gameStarted) return;
	// Clean up destroyed stones
	for (var i = stones.length - 1; i >= 0; i--) {
		if (stones[i].destroyed) {
			stones.splice(i, 1);
		}
	}
	// Clean up destroyed fish
	for (var i = fishes.length - 1; i >= 0; i--) {
		if (fishes[i].destroyed) {
			fishes.splice(i, 1);
		}
	}
	// Clean up destroyed coins
	for (var i = coins.length - 1; i >= 0; i--) {
		if (coins[i].destroyed) {
			coins.splice(i, 1);
		}
	}
	// Check coin collection
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		if (frog.intersects(coin) && !coin.collected) {
			coin.collect();
			coins.splice(i, 1);
		}
	}
	// Update distance traveled
	var currentDistance = Math.max(0, Math.floor((startY - frog.y) / 10));
	if (currentDistance > maxDistance) {
		maxDistance = currentDistance;
		storage.maxDistance = maxDistance;
	}
	distanceTxt.setText('Distance: ' + currentDistance + 'm');
	// Spawn fish periodically - more fish at higher levels
	fishSpawnTimer++;
	var fishSpawnRate = Math.max(30, 120 - level * 8); // Minimum 30 frames between spawns
	if (fishSpawnTimer > fishSpawnRate) {
		fishSpawnTimer = 0;
		// Spawn multiple fish at higher levels
		var fishCount = Math.min(3, Math.floor(level / 3) + 1);
		for (var f = 0; f < fishCount; f++) {
			spawnFish();
		}
	}
	checkWinCondition();
	checkGameOver();
};

===================================================================
--- original.js
+++ change.js
@@ -19,9 +19,14 @@
 		self.collected = true;
 		LK.getSound('coinCollect').play();
 		// Add coin to storage
 		var currentCoins = storage.coins || 0;
-		storage.coins = currentCoins + 1;
+		var coinValue = 1;
+		// Check if coin multiplier is active
+		if (storage.ownedPowerups && storage.ownedPowerups.coinMultiplier) {
+			coinValue = 2;
+		}
+		storage.coins = currentCoins + coinValue;
 		// Update coin display
 		coinsTxt.setText('Coins: ' + storage.coins);
 		self.destroy();
 	};
@@ -188,8 +193,14 @@
 	'fast': 'Fast Frog',
 	'jumper': 'High Jumper',
 	'double': 'Double Jump'
 };
+var powerupPrices = {
+	'coinMultiplier': 200
+};
+var powerupNames = {
+	'coinMultiplier': 'Coin Multiplier x2'
+};
 var frog = game.addChild(new Frog(currentFrogType));
 var level = 1;
 var crossingCount = 0;
 var fishSpawnTimer = 0;
@@ -317,33 +328,14 @@
 		initializeLevel();
 	}
 }
 function checkGameOver() {
-	// Check if frog fell in water (bottom area)
+	// Check if frog fell in water
 	if (frog.y > 2650 && !frog.isJumping) {
 		LK.getSound('splash').play();
 		LK.showGameOver();
 		return;
 	}
-	// Check if frog jumped into water (not on any stone)
-	if (!frog.isJumping && frog.y > 400) {
-		// Only check if frog is in water area
-		var onStone = false;
-		for (var s = 0; s < stones.length; s++) {
-			var stone = stones[s];
-			var distanceToStone = Math.sqrt(Math.pow(frog.x - stone.x, 2) + Math.pow(frog.y - stone.y, 2));
-			if (distanceToStone < 80 && !stone.isOccupied) {
-				// Close enough to be on stone
-				onStone = true;
-				break;
-			}
-		}
-		if (!onStone) {
-			LK.getSound('splash').play();
-			LK.showGameOver();
-			return;
-		}
-	}
 	// Check fish collision
 	for (var i = fishes.length - 1; i >= 0; i--) {
 		var fish = fishes[i];
 		if (frog.intersects(fish)) {
@@ -469,8 +461,43 @@
 		storeTexts.push(frogNameTxt);
 		// Store frog type for purchase detection
 		frogPreview.frogType = frogType;
 	}
+	// Create powerup items
+	var powerupTypes = ['coinMultiplier'];
+	for (var i = 0; i < powerupTypes.length; i++) {
+		var powerupType = powerupTypes[i];
+		var yPos = 1400 + i * 200;
+		// Create powerup preview (using coin asset)
+		var powerupPreview = game.addChild(LK.getAsset('coin', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			x: 400,
+			y: yPos
+		}));
+		powerupPreview.tint = 0x00ff00; // Green tint for powerups
+		storeItems.push(powerupPreview);
+		// Create name and price text
+		var isOwned = storage.ownedPowerups && storage.ownedPowerups[powerupType];
+		var price = powerupPrices[powerupType];
+		var statusText = '';
+		if (isOwned) {
+			statusText = ' (OWNED)';
+		} else {
+			statusText = ' - ' + price + ' coins';
+		}
+		var powerupNameTxt = new Text2(powerupNames[powerupType] + statusText, {
+			size: 50,
+			fill: isOwned ? 0x00ff00 : 0xFFFFFF
+		});
+		powerupNameTxt.anchor.set(0, 0.5);
+		powerupNameTxt.x = 500;
+		powerupNameTxt.y = yPos;
+		game.addChild(powerupNameTxt);
+		storeTexts.push(powerupNameTxt);
+		// Store powerup type for purchase detection
+		powerupPreview.powerupType = powerupType;
+	}
 	// Create back button
 	var backButton = game.addChild(LK.getAsset('stone', {
 		anchorX: 0.5,
 		anchorY: 0.5,
@@ -596,8 +623,33 @@
 						}
 						storeTexts = [];
 						showStore();
 					}
+				} else if (item.powerupType) {
+					// Try to buy powerup
+					var powerupType = item.powerupType;
+					var price = powerupPrices[powerupType];
+					var isOwned = storage.ownedPowerups && storage.ownedPowerups[powerupType];
+					var currentCoins = storage.coins || 0;
+					if (!isOwned && currentCoins >= price) {
+						// Buy powerup
+						storage.coins = currentCoins - price;
+						if (!storage.ownedPowerups) storage.ownedPowerups = {};
+						storage.ownedPowerups[powerupType] = true;
+						// Update coin display
+						coinsTxt.setText('Coins: ' + storage.coins);
+						// Refresh store display
+						showingStore = false;
+						for (var j = 0; j < storeItems.length; j++) {
+							storeItems[j].destroy();
+						}
+						storeItems = [];
+						for (var j = 0; j < storeTexts.length; j++) {
+							storeTexts[j].destroy();
+						}
+						storeTexts = [];
+						showStore();
+					}
 				}
 				break;
 			}
 		}