diff --git a/_docs/index.tmpl.html b/_docs/index.tmpl.html
index adcb4ddf5..1960473bd 100644
--- a/_docs/index.tmpl.html
+++ b/_docs/index.tmpl.html
@@ -25,6 +25,7 @@
       <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten">GitHub</a></li>
       <li class="nav-item"><a class="nav-link" href="https://godoc.org/github.com/hajimehoshi/ebiten">GoDoc</a></li>
       <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten/wiki">Wiki</a>
+      <li class="nav-item"><a class="nav-link" href="https://ebiten-playground.github.io/">Playground</a>
     </ul>
   </div>
 </div></nav>
diff --git a/docs/index.html b/docs/index.html
index 85e7a7393..9dbc41283 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -25,6 +25,7 @@
       <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten">GitHub</a></li>
       <li class="nav-item"><a class="nav-link" href="https://godoc.org/github.com/hajimehoshi/ebiten">GoDoc</a></li>
       <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten/wiki">Wiki</a>
+      <li class="nav-item"><a class="nav-link" href="https://ebiten-playground.github.io/">Playground</a>
     </ul>
   </div>
 </div></nav>