===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,561 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
+
+/**** 
+* Classes
+****/ 
+var AnswerButton = Container.expand(function () {
+	var self = Container.call(this);
+	self.buttonGraphic = self.attachAsset('answerButton', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.answerText = new Text2('', {
+		size: 36,
+		fill: 0xFFFFFF
+	});
+	self.answerText.anchor.set(0.5, 0.5);
+	self.answerText.x = 0;
+	self.answerText.y = 0;
+	self.addChild(self.answerText);
+	self.isCorrect = false;
+	self.answered = false;
+	self.setText = function (text) {
+		self.answerText.setText(text);
+	};
+	self.setCorrect = function (correct) {
+		self.isCorrect = correct;
+	};
+	self.showResult = function () {
+		self.answered = true;
+		self.removeChild(self.buttonGraphic);
+		if (self.isCorrect) {
+			self.buttonGraphic = self.attachAsset('correctButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		} else {
+			self.buttonGraphic = self.attachAsset('incorrectButton', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		}
+	};
+	self.down = function (x, y, obj) {
+		if (!self.answered && gameState === 'playing') {
+			handleAnswerClick(self);
+		}
+	};
+	return self;
+});
+var DifficultyButton = Container.expand(function () {
+	var self = Container.call(this);
+	self.buttonGraphic = self.attachAsset('difficultyButton', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.difficultyText = new Text2('', {
+		size: 28,
+		fill: 0xFFFFFF
+	});
+	self.difficultyText.anchor.set(0.5, 0.5);
+	self.difficultyText.x = 0;
+	self.difficultyText.y = 0;
+	self.addChild(self.difficultyText);
+	self.difficulty = '';
+	self.setText = function (text) {
+		self.difficultyText.setText(text);
+		self.difficulty = text;
+	};
+	self.down = function (x, y, obj) {
+		if (gameState === 'difficultySelection') {
+			selectedDifficulty = self.difficulty;
+			startQuiz();
+		}
+	};
+	return self;
+});
+var QuestionPanel = Container.expand(function () {
+	var self = Container.call(this);
+	var panel = self.attachAsset('questionPanel', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.questionText = new Text2('', {
+		size: 48,
+		fill: 0xFFFFFF
+	});
+	self.questionText.anchor.set(0.5, 0.5);
+	self.questionText.x = 0;
+	self.questionText.y = 0;
+	self.addChild(self.questionText);
+	self.setQuestion = function (text) {
+		self.questionText.setText(text);
+	};
+	return self;
+});
+var TopicButton = Container.expand(function () {
+	var self = Container.call(this);
+	self.buttonGraphic = self.attachAsset('topicButton', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.topicText = new Text2('', {
+		size: 32,
+		fill: 0xFFFFFF
+	});
+	self.topicText.anchor.set(0.5, 0.5);
+	self.topicText.x = 0;
+	self.topicText.y = 0;
+	self.addChild(self.topicText);
+	self.topic = '';
+	self.setText = function (text) {
+		self.topicText.setText(text);
+		self.topic = text;
+	};
+	self.down = function (x, y, obj) {
+		if (gameState === 'topicSelection') {
+			selectedTopic = self.topic;
+			showDifficultySelection();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x34495e
+});
+
+/**** 
+* Game Code
+****/ 
+// Game state variables
+var gameState = 'topicSelection'; // 'topicSelection', 'difficultySelection', 'playing', 'results'
+var selectedTopic = '';
+var selectedDifficulty = '';
+var currentQuestionIndex = 0;
+var totalQuestions = 10;
+var score = 0;
+var questions = [];
+// UI Elements
+var questionPanel;
+var answerButtons = [];
+var topicButtons = [];
+var difficultyButtons = [];
+var progressBarBackground;
+var progressBar;
+var titleText;
+var scoreText;
+var questionCountText;
+// Quiz data
+var quizTopics = ['Science', 'History', 'Geography', 'Literature', 'Mathematics', 'Sports', 'Movies', 'Music'];
+var difficulties = ['Easy', 'Medium', 'Hard'];
+// Sample questions for different topics and difficulties
+var questionBank = {
+	'Science': {
+		'Easy': [{
+			q: 'What is the chemical symbol for water?',
+			a: ['H2O', 'CO2', 'NaCl', 'O2'],
+			c: 0
+		}, {
+			q: 'How many planets are in our solar system?',
+			a: ['7', '8', '9', '10'],
+			c: 1
+		}, {
+			q: 'What gas do plants absorb from the atmosphere?',
+			a: ['Oxygen', 'Carbon Dioxide', 'Nitrogen', 'Hydrogen'],
+			c: 1
+		}, {
+			q: 'What is the center of an atom called?',
+			a: ['Electron', 'Proton', 'Nucleus', 'Neutron'],
+			c: 2
+		}, {
+			q: 'What is the hardest natural substance?',
+			a: ['Gold', 'Iron', 'Diamond', 'Silver'],
+			c: 2
+		}],
+		'Medium': [{
+			q: 'What is the speed of light in vacuum?',
+			a: ['300,000 km/s', '150,000 km/s', '450,000 km/s', '600,000 km/s'],
+			c: 0
+		}, {
+			q: 'Which element has the atomic number 1?',
+			a: ['Helium', 'Hydrogen', 'Lithium', 'Carbon'],
+			c: 1
+		}, {
+			q: 'What type of bond holds water molecules together?',
+			a: ['Ionic', 'Covalent', 'Hydrogen', 'Metallic'],
+			c: 2
+		}, {
+			q: 'What is the most abundant gas in Earth atmosphere?',
+			a: ['Oxygen', 'Carbon Dioxide', 'Nitrogen', 'Argon'],
+			c: 2
+		}, {
+			q: 'How many chambers does a human heart have?',
+			a: ['2', '3', '4', '5'],
+			c: 2
+		}],
+		'Hard': [{
+			q: 'What is the Heisenberg Uncertainty Principle about?',
+			a: ['Energy conservation', 'Position and momentum', 'Time dilation', 'Mass equivalence'],
+			c: 1
+		}, {
+			q: 'What is the name of the theoretical boundary around a black hole?',
+			a: ['Photon sphere', 'Event horizon', 'Ergosphere', 'Singularity'],
+			c: 1
+		}, {
+			q: 'Which subatomic particle was discovered by J.J. Thomson?',
+			a: ['Proton', 'Neutron', 'Electron', 'Positron'],
+			c: 2
+		}, {
+			q: 'What is the pH of pure water at 25°C?',
+			a: ['6', '7', '8', '9'],
+			c: 1
+		}, {
+			q: 'What is the first law of thermodynamics?',
+			a: ['Energy cannot be created or destroyed', 'Entropy always increases', 'Absolute zero is unattainable', 'Heat flows from hot to cold'],
+			c: 0
+		}]
+	},
+	'History': {
+		'Easy': [{
+			q: 'In which year did World War II end?',
+			a: ['1944', '1945', '1946', '1947'],
+			c: 1
+		}, {
+			q: 'Who was the first President of the United States?',
+			a: ['Thomas Jefferson', 'George Washington', 'John Adams', 'Benjamin Franklin'],
+			c: 1
+		}, {
+			q: 'Which ancient wonder was located in Egypt?',
+			a: ['Hanging Gardens', 'Colossus of Rhodes', 'Great Pyramid of Giza', 'Lighthouse of Alexandria'],
+			c: 2
+		}, {
+			q: 'What year did the Titanic sink?',
+			a: ['1910', '1911', '1912', '1913'],
+			c: 2
+		}, {
+			q: 'Who painted the Mona Lisa?',
+			a: ['Michelangelo', 'Leonardo da Vinci', 'Raphael', 'Donatello'],
+			c: 1
+		}],
+		'Medium': [{
+			q: 'Which empire was ruled by Julius Caesar?',
+			a: ['Greek Empire', 'Roman Empire', 'Persian Empire', 'Byzantine Empire'],
+			c: 1
+		}, {
+			q: 'In what year did the Berlin Wall fall?',
+			a: ['1987', '1988', '1989', '1990'],
+			c: 2
+		}, {
+			q: 'Who was the first person to walk on the moon?',
+			a: ['Buzz Aldrin', 'Neil Armstrong', 'John Glenn', 'Alan Shepard'],
+			c: 1
+		}, {
+			q: 'Which war was fought between the North and South in America?',
+			a: ['Revolutionary War', 'War of 1812', 'Civil War', 'Spanish-American War'],
+			c: 2
+		}, {
+			q: 'What ancient civilization built Machu Picchu?',
+			a: ['Maya', 'Aztec', 'Inca', 'Olmec'],
+			c: 2
+		}],
+		'Hard': [{
+			q: 'Which treaty ended World War I?',
+			a: ['Treaty of Versailles', 'Treaty of Paris', 'Treaty of Vienna', 'Treaty of Westphalia'],
+			c: 0
+		}, {
+			q: 'Who was the last Tsar of Russia?',
+			a: ['Alexander III', 'Nicholas II', 'Alexander II', 'Nicholas I'],
+			c: 1
+		}, {
+			q: 'What year did the Byzantine Empire fall?',
+			a: ['1453', '1492', '1517', '1571'],
+			c: 0
+		}, {
+			q: 'Which battle is considered the turning point of World War II in the Pacific?',
+			a: ['Pearl Harbor', 'Midway', 'Guadalcanal', 'Iwo Jima'],
+			c: 1
+		}, {
+			q: 'Who wrote "The Communist Manifesto"?',
+			a: ['Vladimir Lenin', 'Karl Marx and Friedrich Engels', 'Leon Trotsky', 'Joseph Stalin'],
+			c: 1
+		}]
+	}
+};
+// Initialize UI
+function initializeUI() {
+	// Title text
+	titleText = new Text2('Quiz Master Challenge', {
+		size: 72,
+		fill: 0xFFFFFF
+	});
+	titleText.anchor.set(0.5, 0.5);
+	titleText.x = 1024;
+	titleText.y = 300;
+	game.addChild(titleText);
+	// Score display
+	scoreText = new Text2('Score: 0', {
+		size: 48,
+		fill: 0xFFFFFF
+	});
+	scoreText.anchor.set(0.5, 0);
+	LK.gui.top.addChild(scoreText);
+	// Question count
+	questionCountText = new Text2('', {
+		size: 36,
+		fill: 0xFFFFFF
+	});
+	questionCountText.anchor.set(1, 0);
+	LK.gui.topRight.addChild(questionCountText);
+	showTopicSelection();
+}
+function showTopicSelection() {
+	gameState = 'topicSelection';
+	clearGameElements();
+	titleText.setText('Choose Your Topic');
+	titleText.y = 400;
+	// Create topic buttons
+	var cols = 4;
+	var rows = Math.ceil(quizTopics.length / cols);
+	var startX = 1024 - (cols - 1) * 450 / 2;
+	var startY = 800;
+	for (var i = 0; i < quizTopics.length; i++) {
+		var col = i % cols;
+		var row = Math.floor(i / cols);
+		var topicButton = new TopicButton();
+		topicButton.setText(quizTopics[i]);
+		topicButton.x = startX + col * 450;
+		topicButton.y = startY + row * 150;
+		topicButtons.push(topicButton);
+		game.addChild(topicButton);
+	}
+}
+function showDifficultySelection() {
+	gameState = 'difficultySelection';
+	clearGameElements();
+	titleText.setText('Choose Difficulty');
+	titleText.y = 500;
+	var startX = 1024;
+	var startY = 800;
+	for (var i = 0; i < difficulties.length; i++) {
+		var difficultyButton = new DifficultyButton();
+		difficultyButton.setText(difficulties[i]);
+		difficultyButton.x = startX;
+		difficultyButton.y = startY + i * 150;
+		difficultyButtons.push(difficultyButton);
+		game.addChild(difficultyButton);
+	}
+}
+function startQuiz() {
+	gameState = 'playing';
+	clearGameElements();
+	// Generate questions
+	generateQuestions();
+	currentQuestionIndex = 0;
+	score = 0;
+	// Create progress bar
+	progressBarBackground = game.addChild(LK.getAsset('progressBackground', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	}));
+	progressBarBackground.x = 1024;
+	progressBarBackground.y = 200;
+	progressBar = game.addChild(LK.getAsset('progressBar', {
+		anchorX: 0,
+		anchorY: 0.5
+	}));
+	progressBar.x = progressBarBackground.x - progressBarBackground.width / 2;
+	progressBar.y = 200;
+	progressBar.width = 0;
+	// Create question panel
+	questionPanel = new QuestionPanel();
+	questionPanel.x = 1024;
+	questionPanel.y = 600;
+	game.addChild(questionPanel);
+	// Create answer buttons
+	for (var i = 0; i < 4; i++) {
+		var answerButton = new AnswerButton();
+		var col = i % 2;
+		var row = Math.floor(i / 2);
+		answerButton.x = 524 + col * 1000;
+		answerButton.y = 1000 + row * 200;
+		answerButtons.push(answerButton);
+		game.addChild(answerButton);
+	}
+	showQuestion();
+}
+function generateQuestions() {
+	questions = [];
+	var topicQuestions = questionBank[selectedTopic] && questionBank[selectedTopic][selectedDifficulty];
+	if (topicQuestions) {
+		// Use existing questions
+		for (var i = 0; i < Math.min(totalQuestions, topicQuestions.length); i++) {
+			questions.push(topicQuestions[i]);
+		}
+	} else {
+		// Generate placeholder questions
+		for (var i = 0; i < totalQuestions; i++) {
+			questions.push({
+				q: 'Sample question ' + (i + 1) + ' about ' + selectedTopic + ' (' + selectedDifficulty + ')',
+				a: ['Option A', 'Option B', 'Option C', 'Option D'],
+				c: Math.floor(Math.random() * 4)
+			});
+		}
+	}
+}
+function showQuestion() {
+	if (currentQuestionIndex >= questions.length) {
+		showResults();
+		return;
+	}
+	var question = questions[currentQuestionIndex];
+	// Update question panel
+	questionPanel.setQuestion(question.q);
+	// Update answer buttons
+	for (var i = 0; i < 4; i++) {
+		answerButtons[i].setText(question.a[i]);
+		answerButtons[i].setCorrect(i === question.c);
+		answerButtons[i].answered = false;
+		// Reset button graphics
+		answerButtons[i].removeChild(answerButtons[i].buttonGraphic);
+		answerButtons[i].buttonGraphic = answerButtons[i].attachAsset('answerButton', {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+	}
+	// Update progress
+	updateProgress();
+	updateScoreDisplay();
+}
+function handleAnswerClick(button) {
+	// Show results for all buttons
+	for (var i = 0; i < answerButtons.length; i++) {
+		answerButtons[i].showResult();
+	}
+	// Update score
+	if (button.isCorrect) {
+		var points = getDifficultyPoints();
+		score += points;
+		LK.getSound('correct').play();
+		LK.effects.flashObject(button, 0x27ae60, 500);
+	} else {
+		LK.getSound('incorrect').play();
+		LK.effects.flashObject(button, 0xe74c3c, 500);
+	}
+	// Move to next question after delay
+	LK.setTimeout(function () {
+		currentQuestionIndex++;
+		showQuestion();
+	}, 2000);
+}
+function getDifficultyPoints() {
+	switch (selectedDifficulty) {
+		case 'Easy':
+			return 10;
+		case 'Medium':
+			return 20;
+		case 'Hard':
+			return 30;
+		default:
+			return 10;
+	}
+}
+function updateProgress() {
+	var progress = (currentQuestionIndex + 1) / totalQuestions;
+	progressBar.width = progressBarBackground.width * progress;
+	questionCountText.setText('Question ' + (currentQuestionIndex + 1) + '/' + totalQuestions);
+}
+function updateScoreDisplay() {
+	scoreText.setText('Score: ' + score);
+}
+function showResults() {
+	gameState = 'results';
+	clearGameElements();
+	var percentage = Math.round(score / (totalQuestions * getDifficultyPoints()) * 100);
+	var grade = getGrade(percentage);
+	titleText.setText('Quiz Complete!');
+	titleText.y = 500;
+	var resultText = new Text2('Final Score: ' + score + '\nAccuracy: ' + percentage + '%\nGrade: ' + grade, {
+		size: 48,
+		fill: 0xFFFFFF
+	});
+	resultText.anchor.set(0.5, 0.5);
+	resultText.x = 1024;
+	resultText.y = 900;
+	game.addChild(resultText);
+	var playAgainText = new Text2('Tap anywhere to play again', {
+		size: 36,
+		fill: 0x95A5A6
+	});
+	playAgainText.anchor.set(0.5, 0.5);
+	playAgainText.x = 1024;
+	playAgainText.y = 1200;
+	game.addChild(playAgainText);
+	// Update high score
+	var highScore = storage.highScore || 0;
+	if (score > highScore) {
+		storage.highScore = score;
+		LK.effects.flashScreen(0xf1c40f, 1000);
+	}
+	LK.setScore(score);
+}
+function getGrade(percentage) {
+	if (percentage >= 90) return 'A+';
+	if (percentage >= 80) return 'A';
+	if (percentage >= 70) return 'B';
+	if (percentage >= 60) return 'C';
+	if (percentage >= 50) return 'D';
+	return 'F';
+}
+function clearGameElements() {
+	// Clear topic buttons
+	for (var i = 0; i < topicButtons.length; i++) {
+		topicButtons[i].destroy();
+	}
+	topicButtons = [];
+	// Clear difficulty buttons
+	for (var i = 0; i < difficultyButtons.length; i++) {
+		difficultyButtons[i].destroy();
+	}
+	difficultyButtons = [];
+	// Clear answer buttons
+	for (var i = 0; i < answerButtons.length; i++) {
+		answerButtons[i].destroy();
+	}
+	answerButtons = [];
+	// Clear question panel
+	if (questionPanel) {
+		questionPanel.destroy();
+		questionPanel = null;
+	}
+	// Clear progress bars
+	if (progressBar) {
+		progressBar.destroy();
+		progressBar = null;
+	}
+	if (progressBarBackground) {
+		progressBarBackground.destroy();
+		progressBarBackground = null;
+	}
+}
+// Game event handlers
+game.down = function (x, y, obj) {
+	if (gameState === 'results') {
+		showTopicSelection();
+	}
+};
+game.update = function () {
+	// Update score display if needed
+	if (gameState === 'playing') {
+		updateScoreDisplay();
+	}
+};
+// Initialize the game
+initializeUI();
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