diff --git a/client.html b/client.html
index 1fad6f5..9305e3b 100644
--- a/client.html
+++ b/client.html
@@ -625,6 +625,17 @@
       } else if (pointerLocked) {
         hintEl.textContent = 'Mouse captured — ESC to release';
         pingActive();
+
+        if (!sessionStorage.getItem('css_pointerlock_conversion_fired')) {
+          sessionStorage.setItem('css_pointerlock_conversion_fired', '1');
+          if (typeof gtag === 'function') {
+            gtag('event', 'conversion', {
+              'send_to': 'AW-18299227566/DVngCObDst4cEK6b4JVE',
+              'value': 1.0,
+              'currency': 'DKK'
+            });
+          }
+        }
       }
     });