diff --git a/icon-debug.png b/icon-debug.png
new file mode 100644
index 0000000..a76a929
Binary files /dev/null and b/icon-debug.png differ
diff --git a/index.html b/index.html
index 2197b42..5c1f609 100644
--- a/index.html
+++ b/index.html
@@ -14,7 +14,7 @@
 </head>
 <body data-mode="splash">
     <header id="header-main">
-        <img src="icon.png" alt="">
+        <img id="header-icon" src="icon.png" alt="">
         <h1>Lexy's Labyrinth</h1>
         <p>— a game by <a href="https://eev.ee/">eevee</a></p>
         <nav>
diff --git a/js/main.js b/js/main.js
index 44c47bd..d08f714 100644
--- a/js/main.js
+++ b/js/main.js
@@ -468,20 +468,11 @@ class Player extends PrimaryView {
             if (! this.active)
                 return;
 
-            if (ev.key === 'p') {
+            if (ev.key === 'p' || ev.key === 'Pause') {
                 this.toggle_pause();
                 return;
             }
 
-            if (ev.key === 'Pause' && ! this.debug.enabled) {
-                new ConfirmOverlay(this.conductor,
-                    "Enable debug mode?  This will disable all saving of scores until you reload!",
-                    () => {
-                        this.setup_debug();
-                    },
-                ).open();
-            }
-
             if (ev.key === ' ') {
                 if (this.state === 'waiting') {
                     // Start without moving
@@ -664,6 +655,7 @@ class Player extends PrimaryView {
     }
 
     // Link up the debug panel and enable debug features
+    // (note that this might be called /before/ setup!)
     setup_debug() {
         this.root.classList.add('--debug');
         let debug_el = this.root.querySelector('#player-debug');
@@ -2071,6 +2063,20 @@ class Conductor {
             this.switch_to_player();
         });
 
+        // Bind the secret debug button: the icon in the lower left
+        document.querySelector('#header-icon').addEventListener('auxclick', ev => {
+            if (ev.button === 1 && ! this.player.debug.enabled) {
+                new ConfirmOverlay(this,
+                    "Enable debug mode in the player?  This will give you lots of toys to play with, " +
+                    "but disable all saving of scores until you reload the page!",
+                    () => {
+                        this.player.setup_debug();
+                        ev.target.src = '/icon-debug.png';
+                    },
+                ).open();
+            }
+        });
+
         this.update_nav_buttons();
         this.switch_to_splash();
     }
