/**** 
* Classes
****/ 
// Define the BadPaper class
var BadPaper = Container.expand(function () {
	var self = Container.call(this);
	var paperGraphics = self.attachAsset('badPaper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// BadPaper specific update logic
	};
	self.containsPoint = function (point) {
		return point.x >= self.x && point.x <= self.x + self.width && point.y >= self.y && point.y <= self.y + self.height;
	};
});
// Define the Guard class
var Guard = Container.expand(function () {
	var self = Container.call(this);
	var guardGraphics = self.attachAsset('guard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Guard specific update logic
	};
});
//<Assets used in the game will automatically appear here>
// Define the Paper class
var Paper = Container.expand(function () {
	var self = Container.call(this);
	var paperGraphics = self.attachAsset('paper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Paper specific update logic
	};
	self.containsPoint = function (point) {
		return point.x >= self.x && point.x <= self.x + self.width && point.y >= self.y && point.y <= self.y + self.height;
	};
});

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

/**** 
* Game Code
****/ 
// Initialize arrays and variables
var papers = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create the guard and position it
var guard = game.addChild(new Guard());
guard.x = 2048 / 2;
guard.y = 2732 - 200;
// Function to handle paper acceptance
function acceptPaper(paper) {
	paper.destroy();
	papers.splice(papers.indexOf(paper), 1);
	if (paper instanceof BadPaper) {
		LK.showGameOver();
	} else {
		score += 1;
		scoreTxt.setText(score);
	}
}
// Function to handle paper rejection
function rejectPaper(paper) {
	paper.destroy();
	papers.splice(papers.indexOf(paper), 1);
	score -= 1;
	scoreTxt.setText(score);
}
// Function to create a new paper
function createPaper() {
	var newPaper;
	if (Math.random() < 0.1) {
		// 10% chance to create a bad paper
		newPaper = new BadPaper();
	} else {
		newPaper = new Paper();
	}
	newPaper.x = Math.random() * 2048;
	newPaper.y = 0;
	papers.push(newPaper);
	game.addChild(newPaper);
}
// Event listener for accepting papers
game.down = function (x, y, obj) {
	var localPos = game.toLocal(obj.global);
	papers.forEach(function (paper) {
		if (paper.containsPoint(localPos)) {
			acceptPaper(paper);
		}
	});
};
// Event listener for rejecting papers
game.up = function (x, y, obj) {
	var localPos = game.toLocal(obj.global);
	papers.forEach(function (paper) {
		if (paper.containsPoint(localPos)) {
			rejectPaper(paper);
		}
	});
};
// Update function to handle game logic
game.update = function () {
	// Create a new paper every 60 ticks
	if (LK.ticks % 60 == 0) {
		createPaper();
	}
	// Update all papers
	papers.forEach(function (paper) {
		paper.y += 5; // Move paper downwards
		if (paper.y > 2732) {
			rejectPaper(paper); // Reject paper if it goes off screen
		}
	});
};

===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,21 @@
 /**** 
 * Classes
 ****/ 
+// Define the BadPaper class
+var BadPaper = Container.expand(function () {
+	var self = Container.call(this);
+	var paperGraphics = self.attachAsset('badPaper', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		// BadPaper specific update logic
+	};
+	self.containsPoint = function (point) {
+		return point.x >= self.x && point.x <= self.x + self.width && point.y >= self.y && point.y <= self.y + self.height;
+	};
+});
 // Define the Guard class
 var Guard = Container.expand(function () {
 	var self = Container.call(this);
 	var guardGraphics = self.attachAsset('guard', {
@@ -54,10 +68,14 @@
 // Function to handle paper acceptance
 function acceptPaper(paper) {
 	paper.destroy();
 	papers.splice(papers.indexOf(paper), 1);
-	score += 1;
-	scoreTxt.setText(score);
+	if (paper instanceof BadPaper) {
+		LK.showGameOver();
+	} else {
+		score += 1;
+		scoreTxt.setText(score);
+	}
 }
 // Function to handle paper rejection
 function rejectPaper(paper) {
 	paper.destroy();
@@ -66,9 +84,15 @@
 	scoreTxt.setText(score);
 }
 // Function to create a new paper
 function createPaper() {
-	var newPaper = new Paper();
+	var newPaper;
+	if (Math.random() < 0.1) {
+		// 10% chance to create a bad paper
+		newPaper = new BadPaper();
+	} else {
+		newPaper = new Paper();
+	}
 	newPaper.x = Math.random() * 2048;
 	newPaper.y = 0;
 	papers.push(newPaper);
 	game.addChild(newPaper);