--- a/Game/src/game.c
+++ b/Game/src/game.c
@@ -27,6 +27,11 @@
 #include <stdio.h>
 #include <time.h>
 #include <stdlib.h>
+
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#include <SDL2/SDL.h>
+#endif
 
 #ifdef _WIN32
 	#include <conio.h>
@@ -2389,6 +2394,32 @@
 	}
 }
 
+
+#ifdef __EMSCRIPTEN__
+/* A confirmed browser-menu exit skips DOS end screens and native net waits.
+ * The shell owns the relay leave and save sync after the single onExit event. */
+void dukeBrowserMenuExit(int toTitle)
+{
+    static int exiting = 0;
+    if (exiting || (toTitle && numplayers > 1)) return;
+    exiting = 1;
+    ready2send = 0;
+    gamequit = 0;
+    KB_FlushKeyboardQueue();
+    dukeTournamentStop();
+    if (ud.recstat == 1) closedemowrite();
+    if (frecfilep != NULL)
+    {
+        fclose(frecfilep);
+        frecfilep = NULL;
+    }
+    Shutdown();
+    uninitgroupfile();
+    SDL_Quit();
+    EM_ASM({ Module['dukeExitReason'] = $0 ? 'title' : 'quit'; }, toTitle);
+    emscripten_force_exit(EXIT_SUCCESS);
+}
+#endif
 
 void gameexit(char  *msg)
 {
--- a/Game/src/menues.c
+++ b/Game/src/menues.c
@@ -34,6 +34,9 @@
 extern void dukeTournamentStart(int,int,int);
 extern void dukeTournamentStop(void);
 extern void dukeTournamentKill(int,int);
+#ifdef __EMSCRIPTEN__
+extern void dukeBrowserMenuExit(int toTitle);
+#endif
 #include "audiolib/fx_man.h"
 #include "audiolib/music.h"
 #include "animlib.h"
@@ -3517,14 +3520,27 @@
 
             gametext(c,90,"Are you sure you want to quit?",0,2+8+16);
             gametext(c,99,"(Y/N)",0,2+8+16);
+#ifdef __EMSCRIPTEN__
+            gametext(c,114,"UNSAVED PROGRESS WILL BE LOST",0,2+8+16);
+            if (numplayers > 1)
+                gametext(c,126,"MATCH WILL END FOR EVERYONE",0,2+8+16);
+#endif
 
 			_handle_events();
             if( KB_KeyPressed(sc_Space) || KB_KeyPressed(sc_Enter) || KB_KeyPressed(sc_kpad_Enter) || KB_KeyPressed(sc_Y) || LMB )
             {
-				gameexitanycase();
-            }
-
+#ifdef __EMSCRIPTEN__
+                dukeBrowserMenuExit(0);
+#else
+                gameexitanycase();
+#endif
+            }
+
+#ifdef __EMSCRIPTEN__
+            x = probe(186,145,0,0);
+#else
             x = probe(186,124,0,0);
+#endif
             if(x == -1 || KB_KeyPressed(sc_N) || RMB)
             {
                 KB_ClearKeyDown(sc_N);
@@ -3543,10 +3559,16 @@
             c = 320>>1;
             gametext(c,90,"Quit to Title?",0,2+8+16);
             gametext(c,99,"(Y/N)",0,2+8+16);
+#ifdef __EMSCRIPTEN__
+            gametext(c,114,"UNSAVED PROGRESS WILL BE LOST",0,2+8+16);
+#endif
 
 			_handle_events();
             if( KB_KeyPressed(sc_Space) || KB_KeyPressed(sc_Enter) || KB_KeyPressed(sc_kpad_Enter) || KB_KeyPressed(sc_Y) || LMB )
             {
+#ifdef __EMSCRIPTEN__
+                dukeBrowserMenuExit(1);
+#else
                 KB_FlushKeyboardQueue();
                 ps[myconnectindex].gm = MODE_DEMO;
                 if(ud.recstat == 1)
@@ -3555,9 +3577,14 @@
 					dobonus(1);
 				ud.last_level = -1;
                 cmenu(0);
-            }
-
+#endif
+            }
+
+#ifdef __EMSCRIPTEN__
+            x = probe(186,137,0,0);
+#else
             x = probe(186,124,0,0);
+#endif
 
             if(x == -1 || KB_KeyPressed(sc_N) || RMB)
             {