===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,414 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Particle class for jump/dash effects
+var Particle = Container.expand(function () {
+	var self = Container.call(this);
+	var p = self.attachAsset('particle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.life = 30 + Math.random() * 20;
+	self.vx = (Math.random() - 0.5) * 16;
+	self.vy = -8 - Math.random() * 8;
+	self.alpha = 1;
+	self.update = function () {
+		self.x += self.vx;
+		self.y += self.vy;
+		self.vy += 1.2;
+		self.life--;
+		self.alpha -= 0.03;
+		if (self.life <= 0 || self.alpha <= 0) {
+			self.destroy();
+		}
+	};
+	return self;
+});
+// Player class
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var cube = self.attachAsset('playerCube', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.width = cube.width;
+	self.height = cube.height;
+	self.velY = 0;
+	self.isGrounded = false;
+	self.jumpPower = -38;
+	self.gravity = 3.2;
+	self.alive = true;
+	self.jumpQueued = false;
+	// For jump effect
+	self.jumpEffect = function () {
+		tween(self, {
+			scaleX: 1.2,
+			scaleY: 0.8
+		}, {
+			duration: 80,
+			easing: tween.cubicOut,
+			onFinish: function onFinish() {
+				tween(self, {
+					scaleX: 1,
+					scaleY: 1
+				}, {
+					duration: 120,
+					easing: tween.cubicIn
+				});
+			}
+		});
+	};
+	// Called every tick
+	self.update = function () {
+		if (!self.alive) return;
+		// Gravity
+		self.velY += self.gravity;
+		self.y += self.velY;
+		// Clamp to ground
+		if (self.y > groundY) {
+			self.y = groundY;
+			self.velY = 0;
+			self.isGrounded = true;
+		} else {
+			self.isGrounded = false;
+		}
+		// Jump if queued
+		if (self.jumpQueued && self.isGrounded) {
+			self.velY = self.jumpPower;
+			self.isGrounded = false;
+			self.jumpQueued = false;
+			self.jumpEffect();
+			spawnJumpParticles(self.x, self.y - self.height / 2);
+		}
+	};
+	// Call to queue a jump
+	self.jump = function () {
+		if (self.isGrounded && self.alive) {
+			self.jumpQueued = true;
+		}
+	};
+	// Call on death
+	self.die = function () {
+		self.alive = false;
+		tween(self, {
+			rotation: Math.PI * 2,
+			alpha: 0
+		}, {
+			duration: 600,
+			easing: tween.cubicIn
+		});
+	};
+	return self;
+});
+// Obstacle (spike) class
+var Spike = Container.expand(function () {
+	var self = Container.call(this);
+	var spike = self.attachAsset('spike', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.width = spike.width;
+	self.height = spike.height;
+	self.speed = 22;
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
+	backgroundColor: 0x181c2a
+});
+
+/**** 
+* Game Code
+****/ 
+// Music
+// Particle (small circle)
+// Background effect (ellipse)
+// Obstacle (spike)
+// Ground platform
+// Main player cube
+// Game constants
+var groundY = 2200;
+var playerStartX = 420;
+var playerStartY = groundY;
+var gameSpeed = 22;
+var spikeMinGap = 420;
+var spikeMaxGap = 820;
+var spikeTimer = 0;
+var spikeGap = 0;
+var score = 0;
+var isGameActive = false;
+var particles = [];
+var spikes = [];
+var bgEllipses = [];
+var lastTick = 0;
+// Background ellipses for visual effect
+for (var i = 0; i < 3; i++) {
+	var bg = LK.getAsset('bgEllipse', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		x: 1024 + (i - 1) * 900,
+		y: 1200 + i * 200,
+		scaleX: 1.2 + i * 0.2,
+		scaleY: 1.1 + i * 0.1,
+		alpha: 0.18 + i * 0.07
+	});
+	game.addChild(bg);
+	bgEllipses.push(bg);
+}
+// Ground
+var ground = LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: groundY
+});
+game.addChild(ground);
+// Player
+var player = new Player();
+player.x = playerStartX;
+player.y = playerStartY;
+game.addChild(player);
+// Score text
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Animated title for menu
+var titleTxt = new Text2('Dash of Geometry', {
+	size: 160,
+	fill: 0x00EAFF
+});
+titleTxt.anchor.set(0.5, 0.5);
+titleTxt.x = 1024;
+titleTxt.y = 900;
+titleTxt.alpha = 1;
+LK.gui.center.addChild(titleTxt);
+// Tap to start text
+var tapTxt = new Text2('Tap to Start', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+tapTxt.anchor.set(0.5, 0.5);
+tapTxt.x = 1024;
+tapTxt.y = 1200;
+tapTxt.alpha = 0.8;
+LK.gui.center.addChild(tapTxt);
+// Animate menu texts
+tween(titleTxt, {
+	y: 820
+}, {
+	duration: 900,
+	easing: tween.elasticOut
+});
+tween(tapTxt, {
+	alpha: 1
+}, {
+	duration: 800,
+	easing: tween.cubicInOut
+});
+// Hide score at menu
+scoreTxt.visible = false;
+// Start game function
+function startGame() {
+	// Remove menu
+	LK.gui.center.removeChild(titleTxt);
+	LK.gui.center.removeChild(tapTxt);
+	// Reset state
+	isGameActive = true;
+	score = 0;
+	scoreTxt.setText(score);
+	scoreTxt.visible = true;
+	// Reset player
+	player.x = playerStartX;
+	player.y = playerStartY;
+	player.velY = 0;
+	player.alive = true;
+	player.rotation = 0;
+	player.alpha = 1;
+	player.scaleX = 1;
+	player.scaleY = 1;
+	// Remove spikes
+	for (var i = spikes.length - 1; i >= 0; i--) {
+		spikes[i].destroy();
+		spikes.splice(i, 1);
+	}
+	// Remove particles
+	for (var i = particles.length - 1; i >= 0; i--) {
+		particles[i].destroy();
+		particles.splice(i, 1);
+	}
+	// Reset spike timer
+	spikeTimer = 0;
+	spikeGap = spikeMinGap + Math.random() * (spikeMaxGap - spikeMinGap);
+	// Play music
+	LK.playMusic('bgmusic', {
+		fade: {
+			start: 0,
+			end: 1,
+			duration: 1200
+		}
+	});
+}
+// End game function
+function endGame() {
+	isGameActive = false;
+	player.die();
+	LK.effects.flashScreen(0xff2d55, 600);
+	LK.stopMusic();
+	LK.setTimeout(function () {
+		LK.showGameOver();
+	}, 900);
+}
+// Particle spawn on jump
+function spawnJumpParticles(x, y) {
+	for (var i = 0; i < 8; i++) {
+		var p = new Particle();
+		p.x = x;
+		p.y = y + 40;
+		particles.push(p);
+		game.addChild(p);
+	}
+}
+// Particle spawn on score
+function spawnScoreParticles(x, y) {
+	for (var i = 0; i < 12; i++) {
+		var p = new Particle();
+		p.x = x;
+		p.y = y;
+		p.vx = (Math.random() - 0.5) * 24;
+		p.vy = -12 - Math.random() * 10;
+		p.alpha = 1;
+		particles.push(p);
+		game.addChild(p);
+	}
+}
+// Main game update
+game.update = function () {
+	// Animate background ellipses
+	for (var i = 0; i < bgEllipses.length; i++) {
+		var bg = bgEllipses[i];
+		bg.x -= 0.7 + i * 0.2;
+		if (bg.x < -400) {
+			bg.x = 2048 + 400;
+		}
+	}
+	// Menu animation
+	if (!isGameActive) {
+		// Pulse tap text
+		tapTxt.alpha = 0.7 + 0.3 * Math.sin(LK.ticks / 20);
+		titleTxt.rotation = Math.sin(LK.ticks / 60) * 0.04;
+		return;
+	}
+	// Player update
+	player.update();
+	// Spikes update
+	for (var i = spikes.length - 1; i >= 0; i--) {
+		var s = spikes[i];
+		s.update();
+		// Remove off-screen spikes
+		if (s.x < -s.width) {
+			s.destroy();
+			spikes.splice(i, 1);
+			continue;
+		}
+		// Collision with player
+		if (player.alive && player.intersects(s)) {
+			endGame();
+			return;
+		}
+		// Score when passed
+		if (!s.scored && s.x + s.width / 2 < player.x - player.width / 2) {
+			s.scored = true;
+			score++;
+			scoreTxt.setText(score);
+			spawnScoreParticles(player.x, player.y - player.height / 2);
+			// Win condition
+			if (score >= 30) {
+				LK.effects.flashScreen(0x00eaff, 800);
+				LK.showYouWin();
+				return;
+			}
+		}
+	}
+	// Particles update
+	for (var i = particles.length - 1; i >= 0; i--) {
+		var p = particles[i];
+		p.update();
+		if (p.life <= 0 || p.alpha <= 0) {
+			p.destroy();
+			particles.splice(i, 1);
+		}
+	}
+	// Spawn spikes
+	spikeTimer += gameSpeed;
+	if (spikeTimer > spikeGap) {
+		spikeTimer = 0;
+		spikeGap = spikeMinGap + Math.random() * (spikeMaxGap - spikeMinGap);
+		var s = new Spike();
+		s.x = 2048 + s.width / 2;
+		s.y = groundY;
+		s.scored = false;
+		spikes.push(s);
+		game.addChild(s);
+	}
+};
+// Tap to jump or start
+game.down = function (x, y, obj) {
+	if (!isGameActive) {
+		startGame();
+	} else {
+		player.jump();
+	}
+};
+// Prevent drag
+game.move = function (x, y, obj) {};
+// On game over, show menu again
+LK.on('gameover', function () {
+	// Show menu
+	LK.gui.center.addChild(titleTxt);
+	LK.gui.center.addChild(tapTxt);
+	scoreTxt.visible = false;
+	tween(titleTxt, {
+		y: 900
+	}, {
+		duration: 600,
+		easing: tween.elasticOut
+	});
+	tween(tapTxt, {
+		alpha: 1
+	}, {
+		duration: 600,
+		easing: tween.cubicInOut
+	});
+});
+// On win, show menu again
+LK.on('youwin', function () {
+	LK.gui.center.addChild(titleTxt);
+	LK.gui.center.addChild(tapTxt);
+	scoreTxt.visible = false;
+	tween(titleTxt, {
+		y: 900
+	}, {
+		duration: 600,
+		easing: tween.elasticOut
+	});
+	tween(tapTxt, {
+		alpha: 1
+	}, {
+		duration: 600,
+		easing: tween.cubicInOut
+	});
 });
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