update

3D/Assets/Scripts/ExitGame.cs

@@ -0,0 +1,13 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ExitGame : MonoBehaviour
+{
+    private void Update() {
+        if (Input.GetKey("escape")) {
+            Debug.Log("Application is quitting!!");
+            Application.Quit();
+        }
+    }
+}