--- a/Game/src/game.c
+++ b/Game/src/game.c
@@ -68,6 +68,36 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <ctype.h>
+
+#ifdef __EMSCRIPTEN__
+/* Optional motion input belongs only to the live player's view, never a menu.
+ * Called by the existing SDL event/frame pump; only transitions cross into JS. */
+void dukeBrowserUpdateInputState(void)
+{
+    static int previous = -1;
+    int active = 0;
+    if (myconnectindex >= 0 && myconnectindex < MAXPLAYERS)
+    {
+        const struct player_struct *player = &ps[myconnectindex];
+        active = player->gm == MODE_GAME && ready2send &&
+            ud.recstat != 2 && !ud.pause_on && !ud.show_help &&
+            !ud.overhead_on && !CONSOLE_IsActive() &&
+            !player->dead_flag && player->cheat_phase <= 0 && player->newowner == -1 &&
+            player->i >= 0 && player->i < MAXSPRITES && sprite[player->i].extra > 0;
+    }
+    if (active == previous) return;
+    previous = active;
+    EM_ASM({
+        var active = !!$0;
+        Module['dukeGameplayActive'] = active;
+        if (typeof Module['dukeInputState'] === 'function') {
+            try { Module['dukeInputState'](active); } catch (error) {
+                console.error('Duke input-state callback failed', error);
+            }
+        }
+    }, active);
+}
+#endif
 
 
 #define MINITEXT_BLUE	0
@@ -2404,6 +2434,7 @@
     if (exiting || (toTitle && numplayers > 1)) return;
     exiting = 1;
     ready2send = 0;
+    dukeBrowserUpdateInputState();
     gamequit = 0;
     KB_FlushKeyboardQueue();
     dukeTournamentStop();
--- a/Engine/src/display.c
+++ b/Engine/src/display.c
@@ -39,6 +39,10 @@
 #include "icon.h"
 #include "draw.h"
 #include "cache.h"
+
+#ifdef __EMSCRIPTEN__
+extern void dukeBrowserUpdateInputState(void);
+#endif
 
 
 /*
@@ -472,6 +476,10 @@
 {
 	SDL_Event event;
 
+#ifdef __EMSCRIPTEN__
+	dukeBrowserUpdateInputState();
+#endif
+
 	while(SDL_PollEvent(&event))
 		root_sdl_event_filter(&event);
 } /* handle_events */