diff --git a/js/main.js b/js/main.js
index 5731a49..8153ddb 100644
--- a/js/main.js
+++ b/js/main.js
@@ -320,6 +320,11 @@ if (gl &&
             loaded = false;
         };
 
+        window.addEventListener('appMovedToBackground', () => {
+            save();
+            menu.show();
+        });
+
         loader.setFinishCallback(() => {
             requestAnimationFrame(loop);