/**** 
* Classes
****/ 
var Block = Container.expand(function (board) {
	var self = Container.call(this);
	var hsvToRgb = function hsvToRgb(h, s, v) {
		var r, g, b;
		var i = Math.floor(h * 6);
		var f = h * 6 - i;
		var p = v * (1 - s);
		var q = v * (1 - f * s);
		var t = v * (1 - (1 - f) * s);
		switch (i % 6) {
			case 0:
				r = v, g = t, b = p;
				break;
			case 1:
				r = q, g = v, b = p;
				break;
			case 2:
				r = p, g = v, b = t;
				break;
			case 3:
				r = p, g = q, b = v;
				break;
			case 4:
				r = t, g = p, b = v;
				break;
			case 5:
				r = v, g = p, b = q;
				break;
		}
		return (Math.round(r * 255) << 16) + (Math.round(g * 255) << 8) + Math.round(b * 255);
	};
	var ShapeTypes = {
		SINGLE: [[1]],
		TRI: [[1, 1, 1]],
		QUAD: [[1, 1, 1, 1]],
		LSHAPE: [[1, 0, 0], [1, 0, 0], [1, 1, 1]],
		BLOCK: [[1, 1], [1, 1]],
		SMALLLSHAPE: [[1, 0], [1, 1]]
	};
	var shapes = Object.values(ShapeTypes);
	var offset = Math.floor(Math.random() * shapes.length);
	self.shape = shapes[offset];
	var hue = offset % shapes.length / shapes.length;
	self.color = hsvToRgb(hue, 0.6, 1);
	self.rotateShapeRandomly = function () {
		var rotations = Math.floor(Math.random() * 4);
		for (var r = 0; r < rotations; r++) {
			self.shape = self.shape[0].map(function (val, index) {
				return self.shape.map(function (row) {
					return row[index];
				}).reverse();
			});
		}
	};
	self.rotateShapeRandomly();
	self.blocks = [];
	var background = self.attachAsset('background', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	background.alpha = 0;
	var blockSize = 160;
	background.width = 4 * blockSize;
	background.height = 4 * blockSize;
	self.addChild(background);
	self.offsetX = 0;
	self.offsetY = 0;
	var blockOffsetX = (background.width / 2 - self.shape[0].length * blockSize) / 2 - blockSize / 2;
	var blockOffsetY = (background.height / 2 - self.shape.length * blockSize) / 2 - blockSize / 2;
	for (var i = 0; i < self.shape.length; i++) {
		for (var j = 0; j < self.shape[i].length; j++) {
			if (self.shape[i][j] === 1) {
				var block = self.attachAsset('block', {
					anchorX: 0.5,
					anchorY: 0.5
				});
				block.tint = self.color;
				block.width = blockSize;
				block.height = blockSize;
				block.x = j * blockSize + blockOffsetX;
				block.y = i * blockSize + blockOffsetY;
				self.blocks.push(block);
				self.addChild(block);
			}
		}
	}
	self.startX = 0;
	self.startY = 0;
	self.moveTowardsHomePosition = function () {
		var dx = self.startX - self.x;
		var dy = self.startY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 1) {
			self.x += dx * 0.3;
			self.y += dy * 0.3;
		} else {
			self.x = self.startX;
			self.y = self.startY;
		}
	};
	var currentX = 0;
	var currentY = 0;
	self.moveToDragTarget = function () {
		var ox = -this.targetX;
		var oy = (LK.is.mobile ? 400 : 0) - this.targetY;
		this.targetX += ox / 5;
		this.targetY += oy / 5;
		this.x = currentX - this.targetX;
		this.y = currentY - this.targetY;
	};
	self._move_migrated = function (x, y) {
		currentX = x;
		currentY = y;
		self.x = x - this.targetX;
		self.y = y - this.targetY;
	};
	self.setStartPosition = function (x, y) {
		self.startX = x;
		self.startY = y;
	};
	self.getOverlappingCells = function () {
		var cells = [];
		var boardPos = {
			x: -board.x + self.x + 160 * 4 + blockOffsetX + 160,
			y: -board.y + self.y + 160 * 4 + blockOffsetY + 160
		};
		var startX = Math.floor(boardPos.x / 160);
		var startY = Math.floor(boardPos.y / 160);
		for (var i = 0; i < self.shape.length; i++) {
			for (var j = 0; j < self.shape[i].length; j++) {
				if (self.shape[i][j] === 1) {
					var cell = board.grid && board.grid[startY + i] && board.grid[startY + i][startX + j];
					if (cell && !cell.filled) {
						cells.push(cell);
					} else {
						return null;
					}
				}
			}
		}
		return cells;
	};
	self.showOverlap = function () {
		var cells = self.getOverlappingCells();
		if (cells) {
			for (var a = 0; a < cells.length; a++) {
				var cell = cells[a];
				cell.setTint(self.color);
				// Add gentle glow effect by scaling up slightly and fading back
				if (typeof tween !== "undefined") {
					cell.scale.x = cell.scale.y = 1.12;
					tween.to(cell.scale, {
						x: 1,
						y: 1
					}, 180, {
						easing: tween.Easing.Cubic.Out
					});
					// Gentle highlight pulse on cell background
					if (cell.children && cell.children.length > 0) {
						var cellBg = cell.children[0];
						if (cellBg && cellBg.alpha !== undefined) {
							var origAlpha = cellBg.alpha;
							cellBg.alpha = 1;
							tween.to(cellBg, {
								alpha: origAlpha
							}, 180, {
								easing: tween.Easing.Cubic.Out
							});
						}
					}
				}
			}
		}
	};
	self.rotateShapeRandomly = function () {
		var rotations = Math.floor(Math.random() * 4);
		for (var r = 0; r < rotations; r++) {
			self.shape = self.shape[0].map(function (val, index) {
				return self.shape.map(function (row) {
					return row[index];
				}).reverse();
			});
		}
	};
});
var Board = Container.expand(function () {
	var self = Container.call(this);
	self.particles = [];
	Board.prototype.spawnParticles = function (x, y, tint) {
		for (var i = 0; i < 10; i++) {
			var particle = new Particle(tint);
			particle.x = x;
			particle.y = y;
			this.particles.push(particle);
			this.addChild(particle);
		}
	};
	var background = self.attachAsset('background', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	background.y = -20;
	background.alpha = .4;
	background.blendMode = 1;
	self.grid = new Array(10).fill(null).map(function () {
		return new Array(10).fill(null);
	});
	var size = 158;
	var totalWidth = 10 * size;
	var totalHeight = 10 * size;
	for (var i = 0; i < 10; i++) {
		for (var j = 0; j < 10; j++) {
			var cell = new Cell();
			cell.x = i * size - totalWidth / 2 + size / 2;
			cell.y = j * size - totalHeight / 2 + size / 2;
			self.grid[j][i] = cell;
			self.addChild(cell);
		}
	}
	self.removeTint = function () {
		for (var i = 0; i < 10; i++) {
			for (var j = 0; j < 10; j++) {
				if (!self.grid[i][j].filled) {
					self.grid[i][j].setTint(0xffffff);
				}
			}
		}
	};
	self.checkLines = function () {
		var rowsRemoved = 0;
		for (var i = 0; i < 10; i++) {
			var rowFilled = true;
			var colFilled = true;
			for (var j = 0; j < 10; j++) {
				if (!self.grid[i][j].filled) {
					rowFilled = false;
				}
				if (!self.grid[j][i].filled) {
					colFilled = false;
				}
			}
			if (rowFilled || colFilled) {
				// Play disruption sound when a line is completed
				LK.getSound('disruption').play();
				rowsRemoved += (rowFilled ? 1 : 0) + (colFilled ? 1 : 0);
				// Gentle shake animation for board
				if (typeof tween !== "undefined") {
					var origX = self.x,
						origY = self.y;
					tween.to(self, {
						x: origX + 20
					}, 60).onComplete(function () {
						tween.to(self, {
							x: origX - 20
						}, 60).onComplete(function () {
							tween.to(self, {
								x: origX
							}, 60);
						});
					});
				}
				for (var j = 0; j < 10; j++) {
					if (rowFilled) {
						self.grid[i][j].setFill(false);
						self.spawnParticles(self.grid[i][j].x, self.grid[i][j].y, self.grid[i][j].getTint());
					}
					if (colFilled) {
						self.grid[j][i].setFill(false);
						self.spawnParticles(self.grid[j][i].x, self.grid[j][i].y, self.grid[j][i].getTint());
					}
				}
				// Slide blocks down if a row was completed
				if (rowFilled) {
					for (var row = i; row > 0; row--) {
						for (var col = 0; col < 10; col++) {
							self.grid[row][col].setFill(self.grid[row - 1][col].filled);
							self.grid[row][col].setTint(self.grid[row - 1][col].getTint());
						}
					}
					// Clear the top row
					for (var col = 0; col < 10; col++) {
						self.grid[0][col].setFill(false);
						self.grid[0][col].setTint(0xffffff);
					}
				}
			}
		}
		return rowsRemoved;
	};
	self.tick = function () {
		for (var i = self.particles.length - 1; i >= 0; i--) {
			var particle = self.particles[i];
			if (particle) {
				particle.tick();
				if (particle.alpha <= 0) {
					self.particles.splice(i, 1);
				}
			}
		}
	};
	self.placeBlock = function () {};
});
var Cell = Container.expand(function () {
	var self = Container.call(this);
	self.filled = false;
	var empty = self.attachAsset('cell', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	empty.alpha = .8;
	var filled = self.attachAsset('block', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	empty.y = 2;
	self.setFill = function (isFilled) {
		self.filled = isFilled;
		empty.visible = !self.filled;
		filled.visible = self.filled;
	};
	self.getTint = function () {
		return filled.tint;
	};
	self.setTint = function (tint) {
		empty.tint = filled.tint = tint;
	};
	self.setFill(false);
});
var Particle = Container.expand(function (tint) {
	var self = Container.call(this);
	self.tint = tint;
	var particleGraphics = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	particleGraphics.rotation = Math.random() * Math.PI * 2;
	particleGraphics.tint = self.tint;
	self.vx = Math.random() * 4 - 2;
	self.vy = Math.random() * 4 - 2;
	self.alpha = 1;
	self.lifetime = 60;
	self.tick = function () {
		self.x += self.vx;
		self.y += self.vy;
		self.alpha -= 1 / self.lifetime;
		if (self.alpha <= 0) {
			self.destroy();
		}
	};
});

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

/**** 
* Game Code
****/ 
var gameBackground = game.attachAsset('gameBackground', {
	anchorX: 0.5,
	anchorY: 0.5
});
gameBackground.x = 2048 / 2;
gameBackground.y = 2732 / 2;
// Gentle fade-in for background
if (typeof tween !== "undefined") {
	gameBackground.alpha = 0;
	tween.to(gameBackground, {
		alpha: 1
	}, 900, {
		easing: tween.Easing.Cubic.Out
	});
}
var tilesBackground = game.attachAsset('tileBackground', {
	anchorX: 0.5,
	anchorY: 0.5
});
tilesBackground.y = -20;
tilesBackground.alpha = .4;
tilesBackground.blendMode = 1;
var blocks = [];
var dragTarget;
var board = game.addChild(new Board());
board.x = 2048 / 2;
board.y = 2732 / 2 - 250 + 30;
tilesBackground.x = 2048 / 2;
tilesBackground.y = 2732 - 300;
var targetOffset;
game.createBlock = function (index) {
	var block = new Block(board);
	// Set initial position above the screen
	block.x = 2048 / 2 + (index - 1) * (block.width + 30);
	block.y = -block.height;
	// Set the home position where the block should land
	var homeY = 2732 - block.height / 2 - 30;
	block.setStartPosition(block.x, homeY);
	blocks.push(block);
	game.addChild(block);
	// Animate the block falling down to its home position
	if (typeof tween !== "undefined") {
		tween.to(block, {
			y: homeY
		}, 700, {
			easing: tween.Easing.Cubic.Out
		});
	} else {
		block.y = homeY;
	}
	// Animate block pop-in
	if (typeof tween !== "undefined") {
		block.scale.x = block.scale.y = 0.1;
		tween.to(block.scale, {
			x: 1,
			y: 1
		}, 250, {
			easing: tween.Easing.Back.Out
		});
	}
	block.on('down', function (x, y, obj) {
		dragTarget = this;
		var pos = this.toLocal(obj.global);
		var targetPos = game.toLocal(obj.global);
		this.targetX = pos.x;
		this.targetY = pos.y;
		dragTarget._move_migrated(targetPos.x, targetPos.y);
	});
};
game.on('move', function (x, y, obj) {
	if (dragTarget) {
		board.removeTint();
		var pos = game.toLocal(obj.global);
		dragTarget._move_migrated(pos.x, pos.y);
		dragTarget.showOverlap();
	}
});
game.on('up', function (x, y, obj) {
	if (dragTarget) {
		var cells = dragTarget.getOverlappingCells();
		if (cells) {
			for (var a = 0; a < cells.length; a++) {
				cells[a].setFill(true);
				cells[a].setTint(dragTarget.color);
				// Always use the default filled asset for placed squares
				// Add a subtle particle effect when a block is placed
				if (typeof board.spawnParticles === "function") {
					board.spawnParticles(cells[a].x, cells[a].y, dragTarget.color);
				}
				// Subtle scale pulse effect on placed cell
				if (typeof tween !== "undefined") {
					cells[a].scale.x = cells[a].scale.y = 1.2;
					tween.to(cells[a].scale, {
						x: 1,
						y: 1
					}, 180, {
						easing: tween.Easing.Back.Out
					});
				}
			}
			blocks[blocks.indexOf(dragTarget)] = undefined;
			dragTarget.destroy();
			// Gentle pulse on score text when a block is placed
			if (typeof tween !== "undefined") {
				tween.to(scoreTxt.scale, {
					x: 1.15,
					y: 1.15
				}, 100).onComplete(function () {
					tween.to(scoreTxt.scale, {
						x: 1,
						y: 1
					}, 120);
				});
			}
			// Soft highlight effect on board
			if (typeof tween !== "undefined") {
				var origAlpha = board.alpha;
				board.alpha = 0.7;
				tween.to(board, {
					alpha: origAlpha
				}, 200);
				// Gentle pulse on board background
				if (board.children && board.children.length > 0) {
					var bg = board.children[0];
					if (bg && bg.scale) {
						bg.scale.x = bg.scale.y = 1.08;
						tween.to(bg.scale, {
							x: 1,
							y: 1
						}, 220, {
							easing: tween.Easing.Back.Out
						});
					}
				}
			}
			if (!blocks.some(function (block) {
				return block;
			})) {
				game.createBlocks();
			}
			var pointsToAdd = board.checkLines();
			if (pointsToAdd) {
				score += Math.pow(pointsToAdd, 2) * 10;
				scoreTxt.setText(score);
				// Animate scoreTxt: scale up and back to normal
				if (typeof tween !== "undefined") {
					tween.to(scoreTxt.scale, {
						x: 1.3,
						y: 1.3
					}, 120).onComplete(function () {
						tween.to(scoreTxt.scale, {
							x: 1,
							y: 1
						}, 180);
					});
					// Flash scoreTxt color
					var origFill = scoreTxt.style.fill;
					scoreTxt.style.fill = 0xffe066;
					LK.setTimeout(function () {
						scoreTxt.style.fill = origFill;
					}, 200);
				}
				// Show combo/multiplier text if more than 1 line cleared
				if (pointsToAdd > 1) {
					var comboTxt = new Text2('x' + pointsToAdd, {
						size: 120,
						fill: 0xffa500,
						font: 'Impact',
						dropShadow: true,
						dropShadowColor: '#2a636e'
					});
					comboTxt.anchor.set(.5, .5);
					comboTxt.x = scoreTxt.x;
					comboTxt.y = scoreTxt.y + scoreTxt.height + 30;
					LK.gui.top.addChild(comboTxt);
					// Gentle pop-in scale effect
					if (typeof tween !== "undefined") {
						comboTxt.alpha = 0;
						comboTxt.scale.x = comboTxt.scale.y = 0.7;
						tween.to(comboTxt, {
							alpha: 1,
							y: comboTxt.y - 40
						}, 350, {
							easing: tween.Easing.Cubic.Out
						}).onComplete(function () {
							tween.to(comboTxt, {
								alpha: 0,
								y: comboTxt.y - 40
							}, 500).onComplete(function () {
								comboTxt.destroy();
							});
						});
						tween.to(comboTxt.scale, {
							x: 1,
							y: 1
						}, 200, {
							easing: tween.Easing.Back.Out
						});
					} else {
						// fallback: just destroy after 1s
						LK.setTimeout(function () {
							comboTxt.destroy();
						}, 1000);
					}
				}
			}
		}
		board.removeTint();
		dragTarget = undefined;
	}
});
game.createBlocks = function () {
	for (var i = 0; i < 3; i++) {
		game.createBlock(i);
	}
	isGameOver = false;
};
var score = 0;
game.createBlocks();
// Play fragmentation music throughout the game
LK.playMusic('fragmentation', {
	loop: true
});
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF,
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#2a636e'
});
scoreTxt.anchor.set(.5, 0);
LK.gui.top.addChild(scoreTxt);
game.isMovePossible = function () {
	for (var a = 0; a < blocks.length; a++) {
		if (blocks[a]) {
			for (var i = 0; i < 10; i++) {
				for (var j = 0; j < 10; j++) {
					if (board.grid[i][j].filled) {
						continue;
					}
					var canPlace = true;
					for (var k = 0; k < blocks[a].shape.length; k++) {
						for (var l = 0; l < blocks[a].shape[k].length; l++) {
							if (blocks[a].shape[k][l] === 1) {
								if (i + k < 0 || i + k >= 10 || j + l < 0 || j + l >= 10 || board.grid[i + k][j + l].filled) {
									canPlace = false;
									break;
								}
							}
						}
						if (!canPlace) {
							break;
						}
					}
					if (canPlace) {
						return true;
					}
				}
			}
		}
	}
	return false;
};
var isGameOver = false;
LK.on('tick', function () {
	board.tick();
	if (!isGameOver && !game.isMovePossible()) {
		isGameOver = true;
		LK.effects.flashScreen(0xffffff, 1000);
		LK.showGameOver();
	}
	for (var a = blocks.length - 1; a >= 0; a--) {
		if (blocks[a]) {
			if (blocks[a] != dragTarget) {
				blocks[a].moveTowardsHomePosition();
				// Gentle floating animation for idle blocks
				if (!blocks[a].floatingPhase) blocks[a].floatingPhase = Math.random() * Math.PI * 2;
				blocks[a].floatingPhase += 0.04;
				var floatY = Math.sin(blocks[a].floatingPhase) * 8;
				blocks[a].y = blocks[a].startY + floatY;
			} else {
				blocks[a].moveToDragTarget();
			}
		}
	}
});

===================================================================
--- original.js
+++ change.js
@@ -445,39 +445,9 @@
 		if (cells) {
 			for (var a = 0; a < cells.length; a++) {
 				cells[a].setFill(true);
 				cells[a].setTint(dragTarget.color);
-				// Randomly let some placed squares use block2 asset
-				if (Math.random() < 0.33 && cells[a].children && cells[a].children.length > 1) {
-					// Remove the old filled asset
-					var oldFilled = cells[a].children[1];
-					if (oldFilled) {
-						oldFilled.visible = false;
-					}
-					// Attach block2 asset if not already present
-					if (!cells[a].block2Asset) {
-						var block2 = cells[a].attachAsset('block2', {
-							anchorX: 0.5,
-							anchorY: 0.5
-						});
-						block2.width = oldFilled.width;
-						block2.height = oldFilled.height;
-						block2.x = oldFilled.x;
-						block2.y = oldFilled.y;
-						block2.tint = dragTarget.color;
-						block2.visible = true;
-						cells[a].block2Asset = block2;
-						cells[a].addChild(block2);
-					} else {
-						cells[a].block2Asset.visible = true;
-						cells[a].block2Asset.tint = dragTarget.color;
-					}
-				} else if (cells[a].block2Asset) {
-					cells[a].block2Asset.visible = false;
-					if (cells[a].children && cells[a].children.length > 1) {
-						cells[a].children[1].visible = true;
-					}
-				}
+				// Always use the default filled asset for placed squares
 				// Add a subtle particle effect when a block is placed
 				if (typeof board.spawnParticles === "function") {
 					board.spawnParticles(cells[a].x, cells[a].y, dragTarget.color);
 				}