diff --git a/src/Game/Controller/GameController.php b/src/Game/Controller/GameController.php
index 0268cef..c7d03ab 100644
--- a/src/Game/Controller/GameController.php
+++ b/src/Game/Controller/GameController.php
@@ -127,7 +127,12 @@ final class GameController extends AbstractController
         $player = $playerRepository->findOneBy(['session' => $session, 'user' => $user]);
 
         if ($request->isMethod('POST') && $request->request->has('toggle_ready')) {
-            $dashboardService->toggleReady($session, $user);
+            if (!$user->isVerified()) {
+                $this->addFlash('error', 'You must verify your email address before you can mark yourself as ready.');
+            } else {
+                $dashboardService->toggleReady($session, $user);
+            }
+
             return $this->redirectToRoute('game', ['session' => $session->getId()]);
         }
 
diff --git a/src/Game/Service/GameDashboardService.php b/src/Game/Service/GameDashboardService.php
index 9f91c47..fee6b6b 100644
--- a/src/Game/Service/GameDashboardService.php
+++ b/src/Game/Service/GameDashboardService.php
@@ -290,6 +290,10 @@ final class GameDashboardService
             return false;
         }
 
+        if (!$user->isVerified()) {
+            return false;
+        }
+
         $player = null;
         foreach ($session->getPlayers() as $p) {
             if ($p->getUser() === $user) {
diff --git a/templates/game/waiting.html.twig b/templates/game/waiting.html.twig
index fb41edd..44e1a64 100644
--- a/templates/game/waiting.html.twig
+++ b/templates/game/waiting.html.twig
@@ -56,9 +56,15 @@
 
                 <hr>
 
+                {% if not app.user.verified %}
+                    <div class="alert alert-warning">
+                        You must verify your email address before you can mark yourself as ready.
+                        Check your inbox for the confirmation link, or <a href="{{ path('app_verify_resend_email') }}">request a new one</a>.
+                    </div>
+                {% endif %}
                 <form method="post" class="mt-4">
                     <div class="form-check form-switch mb-3">
-                        <input class="form-check-input" type="checkbox" id="toggle_ready" name="toggle_ready" onchange="this.form.submit()" {{ isReady ? 'checked' : '' }}>
+                        <input class="form-check-input" type="checkbox" id="toggle_ready" name="toggle_ready" onchange="this.form.submit()" {{ isReady ? 'checked' : '' }} {{ not app.user.verified ? 'disabled' : '' }}>
                         <label class="form-check-label" for="toggle_ready">
                             <strong>I am ready to start!</strong>
                         </label>