===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,342 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Calculator = Container.expand(function () {
+	var self = Container.call(this);
+	self.displayValue = "0";
+	self.operation = null;
+	self.operand = null;
+	self.waitingForOperand = false;
+	var bg = self.attachAsset('calculatorBg', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var display = self.attachAsset('calcDisplay', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		y: -90
+	});
+	self.displayText = new Text2(self.displayValue, {
+		size: 24,
+		fill: 0x00FF00
+	});
+	self.displayText.anchor.set(1, 0.5);
+	self.displayText.x = 170;
+	self.displayText.y = -90;
+	self.addChild(self.displayText);
+	var buttons = [['C', 'TL→€', '€→TL', '='], ['7', '8', '9', '/'], ['4', '5', '6', '*'], ['1', '2', '3', '-'], ['0', '.', '+', 'OK']];
+	self.buttons = [];
+	for (var row = 0; row < buttons.length; row++) {
+		for (var col = 0; col < buttons[row].length; col++) {
+			var button = self.createButton(buttons[row][col], col, row);
+			self.addChild(button);
+			self.buttons.push(button);
+		}
+	}
+	self.createButton = function (text, col, row) {
+		var button = new Container();
+		var bg = LK.getAsset('calcButton', {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		button.addChild(bg);
+		var label = new Text2(text, {
+			size: 18,
+			fill: 0xFFFFFF
+		});
+		label.anchor.set(0.5, 0.5);
+		button.addChild(label);
+		button.x = (col - 1.5) * 90;
+		button.y = (row - 1) * 70 - 20;
+		button.buttonText = text;
+		button.down = function (x, y, obj) {
+			calculator.handleButtonPress(obj.buttonText);
+		};
+		return button;
+	};
+	self.handleButtonPress = function (buttonText) {
+		LK.getSound('click').play();
+		if (buttonText === 'C') {
+			self.clear();
+		} else if (buttonText === 'OK') {
+			gamePhase = 'assessment';
+			showAssessment();
+		} else if (buttonText === 'TL→€') {
+			var tlAmount = parseFloat(self.displayValue);
+			var euroAmount = convertCurrency(tlAmount, 'tl', 'euro');
+			self.displayValue = euroAmount.toFixed(2);
+			self.updateDisplay();
+		} else if (buttonText === '€→TL') {
+			var euroAmount = parseFloat(self.displayValue);
+			var tlAmount = convertCurrency(euroAmount, 'euro', 'tl');
+			self.displayValue = tlAmount.toFixed(2);
+			self.updateDisplay();
+		} else if (['+', '-', '*', '/', '='].indexOf(buttonText) !== -1) {
+			self.handleOperator(buttonText);
+		} else {
+			self.handleNumber(buttonText);
+		}
+	};
+	self.handleNumber = function (num) {
+		if (self.waitingForOperand) {
+			self.displayValue = num;
+			self.waitingForOperand = false;
+		} else {
+			self.displayValue = self.displayValue === '0' ? num : self.displayValue + num;
+		}
+		self.updateDisplay();
+	};
+	self.handleOperator = function (nextOperator) {
+		var inputValue = parseFloat(self.displayValue);
+		if (self.operand === null) {
+			self.operand = inputValue;
+		} else if (self.operation) {
+			var currentValue = self.operand || 0;
+			var newValue = self.calculate(currentValue, inputValue, self.operation);
+			self.displayValue = String(newValue);
+			self.operand = newValue;
+			self.updateDisplay();
+		}
+		self.waitingForOperand = true;
+		self.operation = nextOperator === '=' ? null : nextOperator;
+	};
+	self.calculate = function (firstOperand, secondOperand, operation) {
+		switch (operation) {
+			case '+':
+				return firstOperand + secondOperand;
+			case '-':
+				return firstOperand - secondOperand;
+			case '*':
+				return firstOperand * secondOperand;
+			case '/':
+				return firstOperand / secondOperand;
+			default:
+				return secondOperand;
+		}
+	};
+	self.clear = function () {
+		self.displayValue = "0";
+		self.operation = null;
+		self.operand = null;
+		self.waitingForOperand = false;
+		self.updateDisplay();
+	};
+	self.updateDisplay = function () {
+		self.displayText.setText(self.displayValue);
+	};
+	return self;
+});
+var CurrencyItem = Container.expand(function (type, value, currency) {
+	var self = Container.call(this);
+	self.itemType = type;
+	self.value = value;
+	self.currency = currency;
+	self.isDragging = false;
+	self.originalX = 0;
+	self.originalY = 0;
+	var assetId = currency + type + value;
+	var graphics = self.attachAsset(assetId, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var label = new Text2(value + ' ' + currency.toUpperCase(), {
+		size: 24,
+		fill: 0xFFFFFF
+	});
+	label.anchor.set(0.5, 0.5);
+	self.addChild(label);
+	self.down = function (x, y, obj) {
+		self.isDragging = true;
+		self.originalX = self.x;
+		self.originalY = self.y;
+		self.alpha = 0.8;
+		LK.getSound('click').play();
+	};
+	self.up = function (x, y, obj) {
+		self.isDragging = false;
+		self.alpha = 1.0;
+		var matched = false;
+		for (var i = 0; i < dropZones.length; i++) {
+			if (self.intersects(dropZones[i]) && !dropZones[i].occupied) {
+				var expectedValue = convertCurrency(self.value, self.currency, dropZones[i].targetCurrency);
+				if (Math.abs(expectedValue - dropZones[i].targetValue) < 0.1) {
+					self.x = dropZones[i].x;
+					self.y = dropZones[i].y;
+					dropZones[i].occupied = true;
+					dropZones[i].occupiedBy = self;
+					matched = true;
+					matchedPairs++;
+					LK.getSound('match').play();
+					LK.setScore(LK.getScore() + 10);
+					scoreText.setText('Score: ' + LK.getScore());
+					if (matchedPairs >= totalPairs) {
+						gamePhase = 'calculator';
+						showCalculator();
+					}
+					break;
+				}
+			}
+		}
+		if (!matched) {
+			tween(self, {
+				x: self.originalX,
+				y: self.originalY
+			}, {
+				duration: 300
+			});
+		}
+	};
+	return self;
+});
+var DropZone = Container.expand(function (targetValue, targetCurrency) {
+	var self = Container.call(this);
+	self.targetValue = targetValue;
+	self.targetCurrency = targetCurrency;
+	self.occupied = false;
+	self.occupiedBy = null;
+	var bg = self.attachAsset('dropZone', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	bg.alpha = 0.3;
+	var label = new Text2(targetValue.toFixed(2) + ' ' + targetCurrency.toUpperCase(), {
+		size: 20,
+		fill: 0xFFFFFF
+	});
+	label.anchor.set(0.5, 0.5);
+	self.addChild(label);
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x1a1a2e
+});
+
+/**** 
+* Game Code
+****/ 
+var exchangeRate = 32.5; // TL per Euro
+var gamePhase = 'matching'; // 'matching', 'calculator', 'assessment'
+var matchedPairs = 0;
+var totalPairs = 6;
+var currencyItems = [];
+var dropZones = [];
+var calculator;
+var scoreText = new Text2('Score: 0', {
+	size: 40,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+var phaseText = new Text2('Match Turkish Lira with Euro equivalents', {
+	size: 32,
+	fill: 0xFFD700
+});
+phaseText.anchor.set(0.5, 0);
+phaseText.y = 80;
+LK.gui.top.addChild(phaseText);
+var exchangeRateText = new Text2('Exchange Rate: 1 EUR = ' + exchangeRate + ' TL', {
+	size: 28,
+	fill: 0x00FF00
+});
+exchangeRateText.anchor.set(0.5, 0);
+exchangeRateText.y = 120;
+LK.gui.top.addChild(exchangeRateText);
+function convertCurrency(amount, fromCurrency, toCurrency) {
+	if (fromCurrency === 'tl' && toCurrency === 'euro') {
+		return amount / exchangeRate;
+	} else if (fromCurrency === 'euro' && toCurrency === 'tl') {
+		return amount * exchangeRate;
+	}
+	return amount;
+}
+function setupMatchingPhase() {
+	var tlValues = [1, 5, 10, 20, 50, 100];
+	var tlTypes = ['Coin', 'Coin', 'Coin', 'Note', 'Note', 'Note'];
+	for (var i = 0; i < tlValues.length; i++) {
+		var tlItem = new CurrencyItem(tlTypes[i], tlValues[i], 'tl');
+		tlItem.x = 200 + i % 3 * 200;
+		tlItem.y = 300 + Math.floor(i / 3) * 150;
+		currencyItems.push(tlItem);
+		game.addChild(tlItem);
+		var euroEquivalent = convertCurrency(tlValues[i], 'tl', 'euro');
+		var dropZone = new DropZone(euroEquivalent, 'euro');
+		dropZone.x = 1400 + i % 3 * 200;
+		dropZone.y = 300 + Math.floor(i / 3) * 150;
+		dropZones.push(dropZone);
+		game.addChild(dropZone);
+	}
+}
+function showCalculator() {
+	phaseText.setText('Use calculator to convert currencies');
+	calculator = new Calculator();
+	calculator.x = 1024;
+	calculator.y = 2200;
+	game.addChild(calculator);
+}
+function showAssessment() {
+	phaseText.setText('Assessment Complete!');
+	for (var i = 0; i < currencyItems.length; i++) {
+		currencyItems[i].destroy();
+	}
+	for (var i = 0; i < dropZones.length; i++) {
+		dropZones[i].destroy();
+	}
+	if (calculator) {
+		calculator.destroy();
+	}
+	var finalScore = LK.getScore();
+	var isProfit = finalScore >= 50;
+	if (isProfit) {
+		game.setBackgroundColor(0x006400);
+		LK.effects.flashScreen(0x00FF00, 1500);
+		LK.getSound('success').play();
+		var successText = new Text2('PROFIT! Well done!', {
+			size: 80,
+			fill: 0xFFFFFF
+		});
+		successText.anchor.set(0.5, 0.5);
+		successText.x = 1024;
+		successText.y = 1200;
+		game.addChild(successText);
+	} else {
+		game.setBackgroundColor(0x8B0000);
+		LK.effects.flashScreen(0xFF0000, 1500);
+		LK.getSound('warning').play();
+		var lossText = new Text2('LOSS! Try again!', {
+			size: 80,
+			fill: 0xFFFFFF
+		});
+		lossText.anchor.set(0.5, 0.5);
+		lossText.x = 1024;
+		lossText.y = 1200;
+		game.addChild(lossText);
+	}
+	LK.setTimeout(function () {
+		if (isProfit) {
+			LK.showYouWin();
+		} else {
+			LK.showGameOver();
+		}
+	}, 3000);
+}
+game.move = function (x, y, obj) {
+	if (gamePhase === 'matching') {
+		for (var i = 0; i < currencyItems.length; i++) {
+			if (currencyItems[i].isDragging) {
+				currencyItems[i].x = x;
+				currencyItems[i].y = y;
+				break;
+			}
+		}
+	}
+};
+setupMatchingPhase();
\ No newline at end of file