===================================================================
--- original.js
+++ change.js
@@ -85,8 +85,9 @@
 var obstacles = [];
 var mushrooms = [];
 var firePowerUps = [];
 var fireBalls = [];
+var fireBallPowerUp = false;
 var score = 0;
 var scoreTxt = new Text2('0', {
 	size: 150,
 	fill: "#ffffff"
@@ -177,13 +178,9 @@
 		}
 		if (slimyBall.intersects(firePowerUps[i])) {
 			firePowerUps[i].destroy();
 			firePowerUps.splice(i, 1);
-			var newFireBall = new FireBall();
-			newFireBall.x = slimyBall.x;
-			newFireBall.y = slimyBall.y;
-			fireBalls.push(newFireBall);
-			game.addChild(newFireBall);
+			fireBallPowerUp = true;
 		}
 	}
 	for (var i = fireBalls.length - 1; i >= 0; i--) {
 		fireBalls[i].y += 5;
@@ -203,10 +200,22 @@
 	}
 };
 // Event listeners for touch/mouse events
 game.move = handleMove;
+var tapCount = 0;
 game.down = function (x, y, obj) {
 	handleMove(x, y, obj);
+	if (fireBallPowerUp) {
+		tapCount++;
+		if (tapCount == 2) {
+			var newFireBall = new FireBall();
+			newFireBall.x = slimyBall.x;
+			newFireBall.y = slimyBall.y;
+			fireBalls.push(newFireBall);
+			game.addChild(newFireBall);
+			tapCount = 0;
+		}
+	}
 };
 game.up = function (x, y, obj) {
 	// No action needed on up event for now
 };
\ No newline at end of file