===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,264 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var ChainLetter = Container.expand(function (letter, targetX, targetY) {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('chainLetter', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var letterText = new Text2(letter, {
+		size: 60,
+		fill: 0xFFFFFF
+	});
+	letterText.anchor.set(0.5, 0.5);
+	self.addChild(letterText);
+	self.letter = letter;
+	self.targetX = targetX;
+	self.targetY = targetY;
+	self.followDistance = 150;
+	return self;
+});
+var LetterD = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('letterD', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var letterText = new Text2('Д', {
+		size: 80,
+		fill: 0xFFFFFF
+	});
+	letterText.anchor.set(0.5, 0.5);
+	self.addChild(letterText);
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+var Target = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('target', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.collected = false;
+	self.update = function () {
+		self.rotation += 0.05;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2F4F4F
+});
+
+/**** 
+* Game Code
+****/ 
+var cyrillicAlphabet = ['Й', 'Ц', 'У', 'К', 'Е', 'Н', 'Г', 'Ш', 'Щ', 'З', 'Ф', 'Ы', 'В', 'А', 'П', 'Р', 'О', 'Л', 'Я', 'Ч', 'С', 'М', 'И', 'Т', 'Ь'];
+var letterD = game.addChild(new LetterD());
+letterD.x = 1024;
+letterD.y = 1366;
+var chainLetters = [];
+var targets = [];
+var obstacles = [];
+var currentLetterIndex = 0;
+var birthTimer = 0;
+var birthInterval = 180; // 3 seconds at 60fps
+var level = 1;
+var targetsCollected = 0;
+var targetsRequired = 5;
+var dragNode = null;
+// Level text
+var levelText = new Text2('Level ' + level, {
+	size: 100,
+	fill: 0xFFFFFF
+});
+levelText.anchor.set(0.5, 0);
+LK.gui.top.addChild(levelText);
+// Score text
+var scoreText = new Text2('Chain: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0, 0);
+scoreText.x = 50;
+scoreText.y = 50;
+game.addChild(scoreText);
+// Progress text
+var progressText = new Text2('Targets: 0/' + targetsRequired, {
+	size: 60,
+	fill: 0xFFFFFF
+});
+progressText.anchor.set(1, 0);
+progressText.x = 1998;
+progressText.y = 50;
+game.addChild(progressText);
+function createLevel() {
+	// Clear existing targets and obstacles
+	for (var i = targets.length - 1; i >= 0; i--) {
+		targets[i].destroy();
+		targets.splice(i, 1);
+	}
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		obstacles[i].destroy();
+		obstacles.splice(i, 1);
+	}
+	// Create targets
+	for (var i = 0; i < targetsRequired; i++) {
+		var target = game.addChild(new Target());
+		target.x = Math.random() * 1800 + 124;
+		target.y = Math.random() * 2400 + 166;
+		targets.push(target);
+	}
+	// Create obstacles
+	var numObstacles = Math.min(level + 2, 8);
+	for (var i = 0; i < numObstacles; i++) {
+		var obstacle = game.addChild(new Obstacle());
+		obstacle.x = Math.random() * 1800 + 124;
+		obstacle.y = Math.random() * 2400 + 166;
+		// Make sure obstacles don't spawn too close to player start
+		var distToPlayer = Math.sqrt(Math.pow(obstacle.x - letterD.x, 2) + Math.pow(obstacle.y - letterD.y, 2));
+		if (distToPlayer < 300) {
+			obstacle.x = Math.random() * 1000 + 1000;
+			obstacle.y = Math.random() * 1000 + 1500;
+		}
+		obstacles.push(obstacle);
+	}
+	targetsCollected = 0;
+	progressText.setText('Targets: 0/' + targetsRequired);
+}
+function giveBirth() {
+	if (currentLetterIndex < cyrillicAlphabet.length) {
+		var newLetter = game.addChild(new ChainLetter(cyrillicAlphabet[currentLetterIndex]));
+		newLetter.x = letterD.x;
+		newLetter.y = letterD.y;
+		chainLetters.push(newLetter);
+		currentLetterIndex++;
+		LK.getSound('birth').play();
+		scoreText.setText('Chain: ' + chainLetters.length);
+		// Flash effect for birth
+		LK.effects.flashObject(letterD, 0xFFFFFF, 300);
+	}
+}
+function updateChain() {
+	if (chainLetters.length > 0) {
+		// First letter follows D
+		var firstLetter = chainLetters[0];
+		var dx = letterD.x - firstLetter.x;
+		var dy = letterD.y - firstLetter.y;
+		var distance = Math.sqrt(dx * dx + dy * dy);
+		if (distance > firstLetter.followDistance) {
+			var moveX = dx / distance * 3;
+			var moveY = dy / distance * 3;
+			firstLetter.x += moveX;
+			firstLetter.y += moveY;
+		}
+		// Other letters follow the previous letter
+		for (var i = 1; i < chainLetters.length; i++) {
+			var currentLetter = chainLetters[i];
+			var previousLetter = chainLetters[i - 1];
+			dx = previousLetter.x - currentLetter.x;
+			dy = previousLetter.y - currentLetter.y;
+			distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance > currentLetter.followDistance) {
+				moveX = dx / distance * 3;
+				moveY = dy / distance * 3;
+				currentLetter.x += moveX;
+				currentLetter.y += moveY;
+			}
+		}
+	}
+}
+function checkCollisions() {
+	// Check D collision with obstacles
+	for (var i = 0; i < obstacles.length; i++) {
+		if (letterD.intersects(obstacles[i])) {
+			// Game over - chain broken
+			LK.effects.flashScreen(0xFF0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Check chain collision with obstacles
+	for (var i = 0; i < chainLetters.length; i++) {
+		for (var j = 0; j < obstacles.length; j++) {
+			if (chainLetters[i].intersects(obstacles[j])) {
+				LK.effects.flashScreen(0xFF0000, 1000);
+				LK.showGameOver();
+				return;
+			}
+		}
+	}
+	// Check target collection
+	for (var i = targets.length - 1; i >= 0; i--) {
+		var target = targets[i];
+		if (!target.collected && letterD.intersects(target)) {
+			target.collected = true;
+			target.destroy();
+			targets.splice(i, 1);
+			targetsCollected++;
+			LK.setScore(LK.getScore() + 10);
+			LK.getSound('collect').play();
+			progressText.setText('Targets: ' + targetsCollected + '/' + targetsRequired);
+			if (targetsCollected >= targetsRequired) {
+				// Level complete
+				level++;
+				targetsRequired = Math.min(targetsRequired + 2, 10);
+				levelText.setText('Level ' + level);
+				LK.getSound('complete').play();
+				LK.effects.flashScreen(0x00FF00, 500);
+				// Check win condition
+				if (currentLetterIndex >= cyrillicAlphabet.length && level > 3) {
+					LK.showYouWin();
+					return;
+				}
+				createLevel();
+			}
+		}
+	}
+}
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		dragNode.x = x;
+		dragNode.y = y;
+		// Keep D within bounds
+		dragNode.x = Math.max(60, Math.min(dragNode.x, 1988));
+		dragNode.y = Math.max(60, Math.min(dragNode.y, 2672));
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	dragNode = letterD;
+	handleMove(x, y, obj);
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+game.update = function () {
+	birthTimer++;
+	if (birthTimer >= birthInterval) {
+		giveBirth();
+		birthTimer = 0;
+		// Decrease birth interval slightly each time for increasing difficulty
+		birthInterval = Math.max(120, birthInterval - 2);
+	}
+	updateChain();
+	checkCollisions();
+};
+// Initialize first level
+createLevel();
\ No newline at end of file