diff --git a/games/flash/index.html b/games/flash/index.html
index e660723b..d5ad70da 100644
--- a/games/flash/index.html
+++ b/games/flash/index.html
@@ -1,56 +1,64 @@
 <html>
-  <head>
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-    <title>Flash Player</title>
-    <link id="favicon" rel="shortcut icon" type="image/png" href="/">
-  </head>
-  <body>
-    <div id="ruffle" width="100%" height="100%"></div>
-    <script src="ruffle.js"></script>
-    <script>
-      var defaultGame = (new URLSearchParams(window.location.search)).get('game');
-      if (!defaultGame) {
-        /*var fileInput = document.createElement('input');
-        fileInput.type = 'file';
-        fileInput.id = 'fileInput';
-        var uploadButton = document.createElement('button');
-        uploadButton.textContent = 'Upload File';
-        uploadButton.addEventListener('click', handleFileUpload);
-        // Append elements to the body
-        document.body.appendChild(fileInput);
-        document.body.appendChild(uploadButton);
 
-        function handleFileUpload() {
-          var uploadedFile = fileInput.files[0];
-          if (uploadedFile) {
-            // appears to take a url rather than local file
-            load(uploadedFile);
-          } else {
-            alert('Please select a file to upload.');
-          }
+<head>
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Flash Player</title>
+  <link id="favicon" rel="shortcut icon" type="image/png" href="/">
+</head>
+
+<body>
+  <div id="ruffle" width="100%" height="100%"></div>
+  <script src="ruffle.js"></script>
+  <script>
+    var defaultGame = (new URLSearchParams(window.location.search)).get('game');
+    if (document.getElementsByTagName('base').length > 0 && !window.location.href.includes(document.getElementsByTagName('base')[0].href)) {
+      const gameUrl = new URL(document.getElementsByTagName('base')[0].href);
+      const gameUrlParams = (new URLSearchParams(gameUrl.search)).get('game');
+      defaultGame = gameUrlParams || defaultGame;
+    }
+    if (!defaultGame) {
+      /*var fileInput = document.createElement('input');
+      fileInput.type = 'file';
+      fileInput.id = 'fileInput';
+      var uploadButton = document.createElement('button');
+      uploadButton.textContent = 'Upload File';
+      uploadButton.addEventListener('click', handleFileUpload);
+      // Append elements to the body
+      document.body.appendChild(fileInput);
+      document.body.appendChild(uploadButton);
+
+      function handleFileUpload() {
+        var uploadedFile = fileInput.files[0];
+        if (uploadedFile) {
+          // appears to take a url rather than local file
+          load(uploadedFile);
+        } else {
+          alert('Please select a file to upload.');
         }
-        */
-      } else {
-        document.title = (defaultGame.replace(/-/g, ' ')).toLowerCase().split(' ').map(function(word) {
-          return word[0].toUpperCase() + word.substr(1);
-        }).join(' ');
-        document.querySelector('#favicon').href = `images/${defaultGame}.png`;
-        load(`files/${defaultGame}.swf`);
       }
+      */
+    } else {
+      document.title = (defaultGame.replace(/-/g, ' ')).toLowerCase().split(' ').map(function (word) {
+        return word[0].toUpperCase() + word.substr(1);
+      }).join(' ');
+      document.querySelector('#favicon').href = `images/${defaultGame}.png`;
+      load(`files/${defaultGame}.swf`);
+    }
 
-      function load(game) {
-        window.RufflePlayer = window.RufflePlayer || {};
-        window.addEventListener("load", (event) => {
-          const ruffle = window.RufflePlayer.newest();
-          const player = ruffle.createPlayer();
-          const container = document.getElementById("ruffle");
-          player.id = "player";
-          player.style.width = "100%";
-          player.style.height = "100%";
-          container.appendChild(player)
-          player.load(game);
-        });
-      }
-    </script>
-  </body>
-</html>
\ No newline at end of file
+    function load(game) {
+      window.RufflePlayer = window.RufflePlayer || {};
+      window.addEventListener("load", (event) => {
+        const ruffle = window.RufflePlayer.newest();
+        const player = ruffle.createPlayer();
+        const container = document.getElementById("ruffle");
+        player.id = "player";
+        player.style.width = "100%";
+        player.style.height = "100%";
+        container.appendChild(player)
+        player.load(game);
+      });
+    }
+  </script>
+</body>
+
+</html>
