diff --git a/frontend/public/games/Fruit Slice/script.js b/frontend/public/games/Fruit Slice/script.js
index d78c0ce6..4b8a6d3d 100644
--- a/frontend/public/games/Fruit Slice/script.js	
+++ b/frontend/public/games/Fruit Slice/script.js	
@@ -98,6 +98,6 @@ canvas.addEventListener("mousemove", (e) => {
 document.getElementById("restart-btn").addEventListener("click", resetGame);
 
 // Spawn fruits continuously
-setInterval(spawnFruit, 900);
+clearInterval(window.__interval); window.__interval = setInterval(spawnFruit, 900);
 
 update();
diff --git a/frontend/public/games/flappyBird/flappy.js b/frontend/public/games/flappyBird/flappy.js
index e6dbae00..689b263f 100644
--- a/frontend/public/games/flappyBird/flappy.js
+++ b/frontend/public/games/flappyBird/flappy.js
@@ -52,7 +52,7 @@ bottomPipeImg= new Image();
 bottomPipeImg.src="bottompipe.png";
 
 requestAnimationFrame(update);
-setInterval(placePipes, 1500); //1.5 sec
+clearInterval(window.__interval); window.__interval = setInterval(placePipes, 1500); //1.5 sec
 document.addEventListener("keydown",moveBird);
 };
 context.drawImage(birdImg, bird.x, bird.y, bird.width, bird.height);
diff --git a/frontend/public/scripts/memory.js b/frontend/public/scripts/memory.js
index bb4a7e10..9dc728e8 100644
--- a/frontend/public/scripts/memory.js
+++ b/frontend/public/scripts/memory.js
@@ -120,7 +120,7 @@ function gameWon() {
     gameActive = false;
     
     // Check for best score
-    if (!bestScore || moves < parseInt(bestScore)) {
+    if (!bestScore || moves < parseInt(bestScore, 10)) {
         bestScore = moves;
         localStorage.setItem('memoryBestScore', bestScore);
         document.getElementById('bestScore').textContent = bestScore;
diff --git a/frontend/public/scripts/rps.js b/frontend/public/scripts/rps.js
index 509b96a1..4a2e4559 100644
--- a/frontend/public/scripts/rps.js
+++ b/frontend/public/scripts/rps.js
@@ -5,7 +5,7 @@ const choices = {
   scissors: { emoji: "✂️", name: "Scissors" },
 };
 
-let scores = JSON.parse(localStorage.getItem("rpsScores")) || {
+let scores = (JSON.parse(localStorage.getItem("rpsScores") ?? "null") ?? null) || {
   player: 0,
   computer: 0,
   draws: 0,