diff --git a/index.php b/index.php
index 8ae6fcc..4a92433 100644
--- a/index.php
+++ b/index.php
@@ -1,13 +1,44 @@
 <?php
-echo "yo ";
+// PHP startpunt (kan later scores / sessions doen)
 ?>
 <!DOCTYPE html>
-<html>
+<html lang="nl">
 <head>
-    <title>yippy</title>
+    <meta charset="UTF-8">
+    <title>T-REX</title>
 </head>
 <body>
-    <h1>dit komt uit html</h1>
-    <p><?php echo "dit komt uit PHP"; ?></p>
+
+<h1>T-Rex Run (in de tab 😎)</h1>
+<p>Kijk naar de titel van dit tabblad</p>
+
+<script>
+let trex = "🦖";
+let ground = "____________________";
+let pos = 0;
+let dir = 1;
+let score = 0;
+
+function updateTitle() {
+    let before = ground.substring(0, pos);
+    let after  = ground.substring(pos + 2);
+
+    // obstakel
+    let obstacle = (score % 10 === 0) ? "::" : "  ";
+
+    document.title =
+        before + trex + after + obstacle + "  score:" + score;
+
+    pos += dir;
+    if (pos <= 0 || pos >= ground.length - 2) {
+        dir *= -1;
+    }
+
+    score++;
+}
+
+setInterval(updateTitle, 200);
+</script>
+
 </body>
 </html>
