===================================================================
--- original.js
+++ change.js
@@ -80,10 +80,16 @@
 	} else {
 		aiPaddle.x -= 5;
 	}
 	// Ball collision with paddles
+	var hitCount = 0;
 	if (ball.intersects(playerPaddle) || ball.intersects(aiPaddle)) {
 		ball.speedY *= -1;
+		hitCount++;
+		if (hitCount % 5 == 0) {
+			ball.speedY *= 1.2;
+			ball.speedX *= 1.2;
+		}
 	}
 	// Scoring
 	if (ball.y <= 0) {
 		aiScore++;