diff --git a/index.html b/index.html
index 8ffb3c7..cc0d98f 100644
--- a/index.html
+++ b/index.html
@@ -32,6 +32,29 @@
     <meta name="twitter:title" content="Interactive Tensei Shitara Slime Datta Ken Map" />
     <meta name="twitter:description" content="Interactive map of the central world of Tensei Shitara Slime Datta Ken (That Time I Got Reincarnated as a Slime)" />
     <meta name="twitter:image" content="/img/twitterImage.png" />
+
+    <script type="text/javascript">
+        // Single Page Apps for GitHub Pages
+        // MIT License
+        // https://github.com/rafgraph/spa-github-pages
+        // This script checks to see if a redirect is present in the query string,
+        // converts it back into the correct url and adds it to the
+        // browser's history using window.history.replaceState(...),
+        // which won't cause the browser to attempt to load the new url.
+        // When the single page app is loaded further down in this file,
+        // the correct url will be waiting in the browser's history for
+        // the single page app to route accordingly.
+        (function(l) {
+            if (l.search[1] === '/' ) {
+                var decoded = l.search.slice(1).split('&').map(function(s) {
+                    return s.replace(/~and~/g, '&')
+                }).join('?');
+                window.history.replaceState(null, null,
+                    l.pathname.slice(0, -1) + decoded + l.hash
+                );
+            }
+        }(window.location))
+    </script>
 </head>
 <body>
     <div id="root"></div>
diff --git a/public/404.html b/public/404.html
new file mode 100644
index 0000000..07e7e02
--- /dev/null
+++ b/public/404.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Tensura Map</title>
+    <script type="text/javascript">
+        // Single Page Apps for GitHub Pages
+        // MIT License
+        // https://github.com/rafgraph/spa-github-pages
+        // This script takes the current url and converts the path and query
+        // string into just a query string, and then redirects the browser
+        // to the new url with only a query string and hash fragment,
+        // e.g. https://www.foo.tld/one/two?a=b&c=d#qwe, becomes
+        // https://www.foo.tld/?/one/two&a=b~and~c=d#qwe
+        // Note: this 404.html file must be at least 512 bytes for it to work
+        // with Internet Explorer (it is currently > 512 bytes)
+
+        // If you're creating a Project Pages site and NOT using a custom domain,
+        // then set pathSegmentsToKeep to 1 (enterprise users may need to set it to > 1).
+        // This way the code will only replace the route part of the path, and not
+        // the real directory in which the app resides, for example:
+        // https://username.github.io/repo-name/one/two?a=b&c=d#qwe becomes
+        // https://username.github.io/repo-name/?/one/two&a=b~and~c=d#qwe
+        // Otherwise, leave pathSegmentsToKeep as 0.
+        var pathSegmentsToKeep = 0;
+
+        var l = window.location;
+        l.replace(
+            l.protocol + '//' + l.hostname + (l.port ? ':' + l.port : '') +
+            l.pathname.split('/').slice(0, 1 + pathSegmentsToKeep).join('/') + '/?/' +
+            l.pathname.slice(1).split('/').slice(pathSegmentsToKeep).join('/').replace(/&/g, '~and~') +
+            (l.search ? '&' + l.search.slice(1).replace(/&/g, '~and~') : '') +
+            l.hash
+        );
+
+    </script>
+</head>
+<body>
+</body>
+</html>
\ No newline at end of file
