diff --git a/Assets/FirebaseManager.cs b/Assets/FirebaseManager.cs
new file mode 100644
index 00000000..21537cf8
--- /dev/null
+++ b/Assets/FirebaseManager.cs
@@ -0,0 +1,86 @@
+using UnityEngine;
+using Firebase;
+using Firebase.Messaging;
+using System.Threading.Tasks;
+
+public class FirebaseManager : MonoBehaviour
+{
+    private static FirebaseManager _instance;
+    private static bool _isInitialized = false;
+
+    public static FirebaseManager Instance => _instance;
+
+    void Awake()
+    {
+        // Singleton: keep only one instance across scenes
+        if (_instance != null)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        _instance = this;
+        DontDestroyOnLoad(gameObject);
+    }
+
+    async void Start()
+    {
+        if (_isInitialized) return;
+
+        _isInitialized = true;
+
+        Debug.Log("Initializing Firebase...");
+        await InitializeFirebaseAsync();
+    }
+
+    private async Task InitializeFirebaseAsync()
+    {
+        var dependencyStatus = await FirebaseApp.CheckAndFixDependenciesAsync();
+        if (dependencyStatus != DependencyStatus.Available)
+        {
+            Debug.LogError($"Firebase dependency error: {dependencyStatus}");
+            return;
+        }
+
+        Debug.Log("✅ Firebase initialized successfully");
+
+        // Register for token and message events
+        FirebaseMessaging.TokenReceived += OnTokenReceived;
+        FirebaseMessaging.MessageReceived += OnMessageReceived;
+
+        // Get the FCM token manually
+        var tokenTask = FirebaseMessaging.GetTokenAsync();
+        await tokenTask;
+
+        if (tokenTask.IsCompletedSuccessfully)
+        {
+            string token = tokenTask.Result;
+            Debug.Log("🔥 FCM Token: " + token);
+
+            // TODO: Save token to PlayFab here if needed
+        }
+        else
+        {
+            Debug.LogWarning("❌ Failed to retrieve FCM token");
+        }
+    }
+
+    private void OnTokenReceived(object sender, TokenReceivedEventArgs token)
+    {
+        Debug.Log("📱 Token received from Firebase: " + token.Token);
+        // Optional: save to PlayFab
+    }
+
+    private void OnMessageReceived(object sender, MessageReceivedEventArgs e)
+    {
+        if (e.Message.Notification != null)
+        {
+            Debug.Log($"📨 Push Notification Received: {e.Message.Notification.Title} - {e.Message.Notification.Body}");
+            // Optional: Show in-game popup or route to leaderboard
+        }
+        else
+        {
+            Debug.Log("📨 Data-only message received.");
+        }
+    }
+}
diff --git a/Assets/FirebaseManager.cs.meta b/Assets/FirebaseManager.cs.meta
new file mode 100644
index 00000000..62bb6980
--- /dev/null
+++ b/Assets/FirebaseManager.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f92bf5d5cdc3e074e8b67ddb00176fee
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/google-services.json b/Assets/google-services.json
index 7a0722a8..bd134edb 100644
--- a/Assets/google-services.json
+++ b/Assets/google-services.json
@@ -13,14 +13,6 @@
         }
       },
       "oauth_client": [
-        {
-          "client_id": "627393855302-c24ki5dspbaoetlldhtq118pdufcm0ku.apps.googleusercontent.com",
-          "client_type": 1,
-          "android_info": {
-            "package_name": "com.rizze.pipuzzle",
-            "certificate_hash": "c15e8bb32af9d00af84b991c7063196b01eee2be"
-          }
-        },
         {
           "client_id": "627393855302-ie99j5loumrkt3gqi5mopa1c1avu7o86.apps.googleusercontent.com",
           "client_type": 3