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

/**** 
* Classes
****/ 
var BackButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonBg = self.attachAsset('backButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		tween(self.scale, {
			x: 0.9,
			y: 0.9
		}, {
			duration: 200
		});
	};
	self.up = function (x, y, obj) {
		tween(self.scale, {
			x: 1.0,
			y: 1.0
		}, {
			duration: 200
		});
	};
	return self;
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.lastY = undefined;
	self.update = function () {
		self.y += self.speed;
		// Add floating animation
		self.x += Math.sin(LK.ticks * 0.1 + self.y * 0.01) * 0.5;
		// Add rotation
		graphics.rotation += 0.05;
	};
	return self;
});
var Debris = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('debris', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = undefined;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var MenuButton = Container.expand(function (color) {
	var self = Container.call(this);
	var buttonBg = self.attachAsset('menuButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	if (color) buttonBg.tint = color;
	self.down = function (x, y, obj) {
		tween(self.scale, {
			x: 0.9,
			y: 0.9
		}, {
			duration: 200
		});
	};
	self.up = function (x, y, obj) {
		tween(self.scale, {
			x: 1.0,
			y: 1.0
		}, {
			duration: 200
		});
	};
	return self;
});
var Meteorite = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('meteorite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.lastY = undefined;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var SensitivitySlider = Container.expand(function () {
	var self = Container.call(this);
	var sliderBar = self.attachAsset('sensSlider', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var sliderHandle = self.addChild(LK.getAsset('sensHandle', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	self.minX = -280;
	self.maxX = 280;
	self.isDragging = false;
	self.down = function (x, y, obj) {
		self.isDragging = true;
		self.updateHandle(x);
	};
	self.up = function (x, y, obj) {
		self.isDragging = false;
	};
	self.updateHandle = function (x) {
		var localX = x - self.x;
		localX = Math.max(self.minX, Math.min(self.maxX, localX));
		sliderHandle.x = localX;
	};
	self.getSensitivity = function () {
		return (sliderHandle.x + 280) / 560; // 0 to 1
	};
	self.setSensitivity = function (value) {
		sliderHandle.x = value * 560 - 280;
	};
	return self;
});
var SettingsButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonBg = self.attachAsset('settingsButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		tween(self.scale, {
			x: 0.9,
			y: 0.9
		}, {
			duration: 200
		});
	};
	self.up = function (x, y, obj) {
		tween(self.scale, {
			x: 1.0,
			y: 1.0
		}, {
			duration: 200
		});
	};
	return self;
});
var Spaceship = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var StartButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonBg = self.attachAsset('startButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		tween(self.scale, {
			x: 0.9,
			y: 0.9
		}, {
			duration: 200
		});
	};
	self.up = function (x, y, obj) {
		tween(self.scale, {
			x: 1.0,
			y: 1.0
		}, {
			duration: 200
		});
	};
	return self;
});
var TouchSlider = Container.expand(function () {
	var self = Container.call(this);
	var sliderBar = self.attachAsset('sliderBar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var sliderHandle = self.addChild(LK.getAsset('sliderHandle', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	self.minX = -380;
	self.maxX = 380;
	self.isDragging = false;
	self.down = function (x, y, obj) {
		self.isDragging = true;
		self.updateHandle(x);
	};
	self.up = function (x, y, obj) {
		self.isDragging = false;
	};
	self.updateHandle = function (x) {
		var localX = x - self.x;
		localX = Math.max(self.minX, Math.min(self.maxX, localX));
		sliderHandle.x = localX;
	};
	self.getSliderValue = function () {
		return sliderHandle.x / 380;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011
});

/**** 
* Game Code
****/ 
// Game state management
var gameState = 'menu'; // 'menu', 'settings', 'playing', 'airplanes'
var sensitivity = storage.sensitivity || 1.0;
var selectedAirplane = storage.selectedAirplane || 'classic';
// Menu elements
var titleText = new Text2('SPACE DODGER', {
	size: 120,
	fill: 0x00aaff
});
titleText.anchor.set(0.5, 0.5);
titleText.x = 2048 / 2;
titleText.y = 600;
game.addChild(titleText);
var startButton = game.addChild(new StartButton());
startButton.x = 2048 / 2;
startButton.y = 1200;
var settingsButton = game.addChild(new SettingsButton());
settingsButton.x = 2048 / 2;
settingsButton.y = 1400;
var airplaneButton = game.addChild(new MenuButton(0x44aa44));
airplaneButton.x = 2048 / 2;
airplaneButton.y = 1600;
// Settings menu elements (initially hidden)
var settingsTitle = new Text2('AJUSTAR SENSIBILIDAD', {
	size: 80,
	fill: 0xFFFFFF
});
settingsTitle.anchor.set(0.5, 0.5);
settingsTitle.x = 2048 / 2;
settingsTitle.y = 800;
settingsTitle.visible = false;
game.addChild(settingsTitle);
var sensitivitySlider = game.addChild(new SensitivitySlider());
sensitivitySlider.x = 2048 / 2;
sensitivitySlider.y = 1200;
sensitivitySlider.visible = false;
sensitivitySlider.setSensitivity(sensitivity);
var sensValueText = new Text2('Sensibilidad: ' + Math.round(sensitivity * 100) + '%', {
	size: 60,
	fill: 0xFFFFFF
});
sensValueText.anchor.set(0.5, 0.5);
sensValueText.x = 2048 / 2;
sensValueText.y = 1350;
sensValueText.visible = false;
game.addChild(sensValueText);
var backButton = game.addChild(new BackButton());
backButton.x = 2048 / 2;
backButton.y = 1500;
backButton.visible = false;
// Airplane selection menu elements (initially hidden)
var airplaneTitle = new Text2('ELEGIR AVIÓN', {
	size: 80,
	fill: 0xFFFFFF
});
airplaneTitle.anchor.set(0.5, 0.5);
airplaneTitle.x = 2048 / 2;
airplaneTitle.y = 600;
airplaneTitle.visible = false;
game.addChild(airplaneTitle);
var airplane1Button = game.addChild(new MenuButton(0x4444aa));
airplane1Button.x = 2048 / 2;
airplane1Button.y = 1000;
airplane1Button.visible = false;
var airplane2Button = game.addChild(new MenuButton(0xaa4444));
airplane2Button.x = 2048 / 2;
airplane2Button.y = 1200;
airplane2Button.visible = false;
var airplane3Button = game.addChild(new MenuButton(0x44aa44));
airplane3Button.x = 2048 / 2;
airplane3Button.y = 1400;
airplane3Button.visible = false;
var airplaneBackButton = game.addChild(new BackButton());
airplaneBackButton.x = 2048 / 2;
airplaneBackButton.y = 1600;
airplaneBackButton.visible = false;
// Decorative elements
var stars = [];
for (var i = 0; i < 50; i++) {
	var star = game.addChild(LK.getAsset('star', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	star.x = Math.random() * 2048;
	star.y = Math.random() * 2732;
	star.alpha = Math.random() * 0.8 + 0.2;
	stars.push(star);
}
var planet1 = game.addChild(LK.getAsset('planet', {
	anchorX: 0.5,
	anchorY: 0.5
}));
planet1.x = 200;
planet1.y = 300;
planet1.alpha = 0.6;
planet1.tint = 0x8888ff;
var planet2 = game.addChild(LK.getAsset('planet', {
	anchorX: 0.5,
	anchorY: 0.5
}));
planet2.x = 1800;
planet2.y = 2400;
planet2.alpha = 0.4;
planet2.tint = 0xff8888;
planet2.scaleX = 0.7;
planet2.scaleY = 0.7;
// Game elements (initially hidden)
var spaceship;
var obstacles = [];
var coins = [];
var coinSpawnTimer = 0;
var coinSpawnRate = 180;
var totalCoins = storage.totalCoins || 0;
var obstacleSpawnTimer = 0;
var obstacleSpawnRate = 90;
var gameSpeed = 1;
var spaceshipSpeed = 1;
var survivalTime = 0;
var difficultyTimer = 0;
var lastScoreCheck = 0;
var speedIncreaseTimer = 0;
var slider;
// GUI elements (created but initially hidden)
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.visible = false;
LK.gui.top.addChild(scoreTxt);
var timeTxt = new Text2('Time: 0s', {
	size: 60,
	fill: 0xFFFFFF
});
timeTxt.anchor.set(1, 0);
timeTxt.visible = false;
LK.gui.topRight.addChild(timeTxt);
timeTxt.x = -20;
timeTxt.y = 100;
var coinsTxt = new Text2('Coins: ' + totalCoins, {
	size: 50,
	fill: 0xffd700
});
coinsTxt.anchor.set(0, 0);
coinsTxt.visible = false;
LK.gui.topLeft.addChild(coinsTxt);
coinsTxt.x = 120;
coinsTxt.y = 20;
game.move = function (x, y, obj) {
	if (gameState === 'playing' && slider && slider.isDragging) {
		slider.updateHandle(x);
		var sliderValue = slider.getSliderValue();
		spaceship.x = 2048 / 2 + sliderValue * 800 * spaceshipSpeed * sensitivity;
		spaceship.x = Math.max(100, Math.min(1948, spaceship.x));
	} else if (gameState === 'settings' && sensitivitySlider.isDragging) {
		sensitivitySlider.updateHandle(x);
		sensitivity = sensitivitySlider.getSensitivity();
		sensValueText.setText('Sensibilidad: ' + Math.round(sensitivity * 100) + '%');
		storage.sensitivity = sensitivity;
	}
};
// Button handlers
startButton.up = function (x, y, obj) {
	tween(startButton.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	startGame();
};
settingsButton.up = function (x, y, obj) {
	tween(settingsButton.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	showSettings();
};
backButton.up = function (x, y, obj) {
	tween(backButton.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	showMenu();
};
airplaneButton.up = function (x, y, obj) {
	tween(airplaneButton.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	showAirplaneSelection();
};
airplane1Button.up = function (x, y, obj) {
	tween(airplane1Button.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	selectedAirplane = 'classic';
	storage.selectedAirplane = selectedAirplane;
	showMenu();
};
airplane2Button.up = function (x, y, obj) {
	tween(airplane2Button.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	selectedAirplane = 'fast';
	storage.selectedAirplane = selectedAirplane;
	showMenu();
};
airplane3Button.up = function (x, y, obj) {
	tween(airplane3Button.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	selectedAirplane = 'robust';
	storage.selectedAirplane = selectedAirplane;
	showMenu();
};
airplaneBackButton.up = function (x, y, obj) {
	tween(airplaneBackButton.scale, {
		x: 1.0,
		y: 1.0
	}, {
		duration: 200
	});
	showMenu();
};
function startGame() {
	gameState = 'playing';
	// Hide menu elements
	titleText.visible = false;
	startButton.visible = false;
	settingsButton.visible = false;
	airplaneButton.visible = false;
	// Show game elements
	spaceship = game.addChild(new Spaceship());
	spaceship.x = 2048 / 2;
	spaceship.y = 2000;
	slider = game.addChild(new TouchSlider());
	slider.x = 2048 / 2;
	slider.y = 2600;
	scoreTxt.visible = true;
	timeTxt.visible = true;
	// Reset game variables
	obstacles = [];
	coins = [];
	coinSpawnTimer = 0;
	obstacleSpawnTimer = 0;
	obstacleSpawnRate = 90;
	coinSpawnRate = 180;
	gameSpeed = 1;
	spaceshipSpeed = 1;
	survivalTime = 0;
	difficultyTimer = 0;
	speedIncreaseTimer = 0;
	lastScoreCheck = 0;
	LK.setScore(0);
	scoreTxt.setText('0');
	timeTxt.setText('Time: 0s');
	coinsTxt.visible = true;
	coinsTxt.setText('Coins: ' + totalCoins);
}
function showSettings() {
	gameState = 'settings';
	// Hide menu elements
	titleText.visible = false;
	startButton.visible = false;
	settingsButton.visible = false;
	airplaneButton.visible = false;
	coinsTxt.visible = false;
	// Show settings elements
	settingsTitle.visible = true;
	sensitivitySlider.visible = true;
	sensValueText.visible = true;
	backButton.visible = true;
}
function showAirplaneSelection() {
	gameState = 'airplanes';
	// Hide menu elements
	titleText.visible = false;
	startButton.visible = false;
	settingsButton.visible = false;
	airplaneButton.visible = false;
	coinsTxt.visible = false;
	// Show airplane selection elements
	airplaneTitle.visible = true;
	airplane1Button.visible = true;
	airplane2Button.visible = true;
	airplane3Button.visible = true;
	airplaneBackButton.visible = true;
}
function showMenu() {
	gameState = 'menu';
	// Hide settings elements
	settingsTitle.visible = false;
	sensitivitySlider.visible = false;
	sensValueText.visible = false;
	backButton.visible = false;
	// Hide airplane selection elements
	airplaneTitle.visible = false;
	airplane1Button.visible = false;
	airplane2Button.visible = false;
	airplane3Button.visible = false;
	airplaneBackButton.visible = false;
	// Hide game elements if they exist
	if (spaceship) {
		spaceship.destroy();
		spaceship = null;
	}
	if (slider) {
		slider.destroy();
		slider = null;
	}
	scoreTxt.visible = false;
	timeTxt.visible = false;
	coinsTxt.visible = false;
	// Clear obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].destroy();
	}
	obstacles = [];
	// Clear coins
	for (var i = 0; i < coins.length; i++) {
		coins[i].destroy();
	}
	coins = [];
	// Show menu elements
	titleText.visible = true;
	startButton.visible = true;
	settingsButton.visible = true;
	airplaneButton.visible = true;
}
game.update = function () {
	// Animate stars
	for (var s = 0; s < stars.length; s++) {
		stars[s].alpha = Math.sin(LK.ticks * 0.02 + s) * 0.3 + 0.5;
	}
	// Rotate planets slowly
	planet1.rotation += 0.005;
	planet2.rotation -= 0.003;
	// Only run game logic during gameplay
	if (gameState !== 'playing' || !spaceship) {
		return;
	}
	survivalTime++;
	difficultyTimer++;
	speedIncreaseTimer++;
	if (survivalTime % 60 === 0) {
		var seconds = Math.floor(survivalTime / 60);
		timeTxt.setText('Time: ' + seconds + 's');
	}
	// Every 10 seconds (600 ticks), increase both airplane and obstacle speeds
	if (speedIncreaseTimer >= 600) {
		speedIncreaseTimer = 0;
		gameSpeed *= 1.1; // Increase falling object speed by 10%
		spaceshipSpeed *= 1.1; // Increase airplane speed by 10%
	}
	// Every 15 seconds (900 ticks), increase obstacle speed by 5%
	if (difficultyTimer >= 900) {
		difficultyTimer = 0;
		gameSpeed *= 1.05;
		obstacleSpawnRate = Math.max(30, obstacleSpawnRate - 5);
	}
	// Every 50 points, increase spaceship speed slightly
	var currentScore = LK.getScore();
	if (Math.floor(currentScore / 50) > Math.floor(lastScoreCheck / 50)) {
		spaceshipSpeed += 0.1;
	}
	lastScoreCheck = currentScore;
	obstacleSpawnTimer++;
	if (obstacleSpawnTimer >= obstacleSpawnRate) {
		obstacleSpawnTimer = 0;
		var obstacle;
		if (Math.random() < 0.7) {
			obstacle = new Meteorite();
		} else {
			obstacle = new Debris();
		}
		obstacle.x = Math.random() * 1800 + 124;
		obstacle.y = -100;
		obstacle.speed *= gameSpeed;
		obstacle.lastY = obstacle.y;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	}
	// Spawn coins
	coinSpawnTimer++;
	if (coinSpawnTimer >= coinSpawnRate) {
		coinSpawnTimer = 0;
		var coin = new Coin();
		coin.x = Math.random() * 1800 + 124;
		coin.y = -100;
		coin.speed *= gameSpeed;
		coin.lastY = coin.y;
		coins.push(coin);
		game.addChild(coin);
	}
	// Update and check coin collection
	for (var c = coins.length - 1; c >= 0; c--) {
		var coin = coins[c];
		// Remove coins that go off screen
		if (coin.y > 2800) {
			coin.destroy();
			coins.splice(c, 1);
			continue;
		}
		// Check coin collection with spaceship
		var dx = spaceship.x - coin.x;
		var dy = spaceship.y - coin.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var collectionDistance = 80; // Generous collection radius
		if (distance < collectionDistance) {
			// Collect coin
			totalCoins++;
			storage.totalCoins = totalCoins;
			coinsTxt.setText('Coins: ' + totalCoins);
			// Add coin collection animation
			tween(coin, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 200,
				onFinish: function onFinish() {
					coin.destroy();
				}
			});
			coins.splice(c, 1);
			continue;
		}
		coin.lastY = coin.y;
	}
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		if (obstacle.lastY < 2800 && obstacle.y >= 2800) {
			LK.setScore(LK.getScore() + 10);
			scoreTxt.setText(LK.getScore());
		}
		if (obstacle.y > 2800) {
			obstacle.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Only lose if spaceship intersects with meteorites or debris with more precise collision
		if (obstacle instanceof Meteorite || obstacle instanceof Debris) {
			// Calculate distance between centers
			var dx = spaceship.x - obstacle.x;
			var dy = spaceship.y - obstacle.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// Use smaller collision radius for more precise collision (about 60% of original size)
			var spaceshipRadius = spaceship.width * 0.6 / 2;
			var obstacleRadius = obstacle.width * 0.6 / 2;
			var collisionDistance = spaceshipRadius + obstacleRadius;
			if (distance < collisionDistance) {
				LK.getSound('destroy').play();
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				showMenu();
				return;
			}
		}
		obstacle.lastY = obstacle.y;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -6,20 +6,14 @@
 
 /**** 
 * Classes
 ****/ 
-var BackButton = Container.expand(function (text) {
+var BackButton = Container.expand(function () {
 	var self = Container.call(this);
 	var buttonBg = self.attachAsset('backButton', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	var buttonText = new Text2(text, {
-		size: 40,
-		fill: 0xFFFFFF
-	});
-	buttonText.anchor.set(0.5, 0.5);
-	self.addChild(buttonText);
 	self.down = function (x, y, obj) {
 		tween(self.scale, {
 			x: 0.9,
 			y: 0.9
@@ -66,21 +60,15 @@
 		self.y += self.speed;
 	};
 	return self;
 });
-var MenuButton = Container.expand(function (text, color) {
+var MenuButton = Container.expand(function (color) {
 	var self = Container.call(this);
 	var buttonBg = self.attachAsset('menuButton', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	if (color) buttonBg.tint = color;
-	var buttonText = new Text2(text, {
-		size: 60,
-		fill: 0xFFFFFF
-	});
-	buttonText.anchor.set(0.5, 0.5);
-	self.addChild(buttonText);
 	self.down = function (x, y, obj) {
 		tween(self.scale, {
 			x: 0.9,
 			y: 0.9
@@ -143,20 +131,14 @@
 		sliderHandle.x = value * 560 - 280;
 	};
 	return self;
 });
-var SettingsButton = Container.expand(function (text) {
+var SettingsButton = Container.expand(function () {
 	var self = Container.call(this);
 	var buttonBg = self.attachAsset('settingsButton', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	var buttonText = new Text2(text, {
-		size: 50,
-		fill: 0xFFFFFF
-	});
-	buttonText.anchor.set(0.5, 0.5);
-	self.addChild(buttonText);
 	self.down = function (x, y, obj) {
 		tween(self.scale, {
 			x: 0.9,
 			y: 0.9
@@ -181,8 +163,32 @@
 		anchorY: 0.5
 	});
 	return self;
 });
+var StartButton = Container.expand(function () {
+	var self = Container.call(this);
+	var buttonBg = self.attachAsset('startButton', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.down = function (x, y, obj) {
+		tween(self.scale, {
+			x: 0.9,
+			y: 0.9
+		}, {
+			duration: 200
+		});
+	};
+	self.up = function (x, y, obj) {
+		tween(self.scale, {
+			x: 1.0,
+			y: 1.0
+		}, {
+			duration: 200
+		});
+	};
+	return self;
+});
 var TouchSlider = Container.expand(function () {
 	var self = Container.call(this);
 	var sliderBar = self.attachAsset('sliderBar', {
 		anchorX: 0.5,
@@ -235,15 +241,15 @@
 titleText.anchor.set(0.5, 0.5);
 titleText.x = 2048 / 2;
 titleText.y = 600;
 game.addChild(titleText);
-var startButton = game.addChild(new MenuButton('INICIAR PARTIDA', 0x4444aa));
+var startButton = game.addChild(new StartButton());
 startButton.x = 2048 / 2;
 startButton.y = 1200;
-var settingsButton = game.addChild(new SettingsButton('SENSIBILIDAD'));
+var settingsButton = game.addChild(new SettingsButton());
 settingsButton.x = 2048 / 2;
 settingsButton.y = 1400;
-var airplaneButton = game.addChild(new MenuButton('ELEGIR AVIÓN', 0x44aa44));
+var airplaneButton = game.addChild(new MenuButton(0x44aa44));
 airplaneButton.x = 2048 / 2;
 airplaneButton.y = 1600;
 // Settings menu elements (initially hidden)
 var settingsTitle = new Text2('AJUSTAR SENSIBILIDAD', {
@@ -268,9 +274,9 @@
 sensValueText.x = 2048 / 2;
 sensValueText.y = 1350;
 sensValueText.visible = false;
 game.addChild(sensValueText);
-var backButton = game.addChild(new BackButton('VOLVER'));
+var backButton = game.addChild(new BackButton());
 backButton.x = 2048 / 2;
 backButton.y = 1500;
 backButton.visible = false;
 // Airplane selection menu elements (initially hidden)
@@ -282,21 +288,21 @@
 airplaneTitle.x = 2048 / 2;
 airplaneTitle.y = 600;
 airplaneTitle.visible = false;
 game.addChild(airplaneTitle);
-var airplane1Button = game.addChild(new MenuButton('AVIÓN CLÁSICO', 0x4444aa));
+var airplane1Button = game.addChild(new MenuButton(0x4444aa));
 airplane1Button.x = 2048 / 2;
 airplane1Button.y = 1000;
 airplane1Button.visible = false;
-var airplane2Button = game.addChild(new MenuButton('AVIÓN RÁPIDO', 0xaa4444));
+var airplane2Button = game.addChild(new MenuButton(0xaa4444));
 airplane2Button.x = 2048 / 2;
 airplane2Button.y = 1200;
 airplane2Button.visible = false;
-var airplane3Button = game.addChild(new MenuButton('AVIÓN ROBUSTO', 0x44aa44));
+var airplane3Button = game.addChild(new MenuButton(0x44aa44));
 airplane3Button.x = 2048 / 2;
 airplane3Button.y = 1400;
 airplane3Button.visible = false;
-var airplaneBackButton = game.addChild(new BackButton('VOLVER'));
+var airplaneBackButton = game.addChild(new BackButton());
 airplaneBackButton.x = 2048 / 2;
 airplaneBackButton.y = 1600;
 airplaneBackButton.visible = false;
 // Decorative elements