diff --git a/patches/libwinevbs/0002-msgbox-callback.patch b/patches/libwinevbs/0002-msgbox-callback.patch
new file mode 100644
index 0000000..56ceb94
--- /dev/null
+++ b/patches/libwinevbs/0002-msgbox-callback.patch
@@ -0,0 +1,64 @@
+diff --git a/include/libwinevbs.h b/include/libwinevbs.h
+index 3ba4df9..6cac7df 100644
+--- a/include/libwinevbs.h
++++ b/include/libwinevbs.h
+@@ -52,6 +52,14 @@ LIBWINEVBS_API const char* libwinevbs_hresult_name(HRESULT hr);
+ typedef struct {
+    void (*log)(libwinevbs_log_level_t level, const char* format, va_list args);
+    HRESULT (*create_object)(const WCHAR* progid, IClassFactory* cf, IUnknown** obj);
++   /* Answers a VBScript MsgBox() call. Must return synchronously (its result
++      is used by the calling script statement immediately) - e.g. a real,
++      blocking confirm()/alert() call under Emscripten. type is the raw
++      VBScript "buttons" argument (MB_OK=0, MB_OKCANCEL=1, MB_YESNO=4, ...);
++      title may be NULL. Return the matching button id (IDOK=1, IDCANCEL=2,
++      IDABORT=3, IDRETRY=4, IDIGNORE=5, IDYES=6, IDNO=7), matching vbOK..vbNo.
++      If unset, MsgBox always answers IDOK/vbOK without asking anything. */
++   int (*msgbox)(const char* prompt, int type, const char* title);
+ } libwinevbs_callbacks_t;
+ 
+ LIBWINEVBS_API void libwinevbs_init(const libwinevbs_callbacks_t* callbacks);
+diff --git a/src/libwinevbs.c b/src/libwinevbs.c
+index 7b3d6f0..91091e4 100644
+--- a/src/libwinevbs.c
++++ b/src/libwinevbs.c
+@@ -32,6 +32,14 @@ HRESULT libwinevbs_create_object(const WCHAR* progid, IClassFactory* cf, IUnknow
+    return CLASS_E_CLASSNOTAVAILABLE;
+ }
+ 
++int libwinevbs_msgbox(const char* prompt, int type, const char* title)
++{
++   if (g_callbacks.msgbox)
++      return g_callbacks.msgbox(prompt, type, title);
++
++   return 1; /* IDOK/vbOK - no host callback registered, so just proceed */
++}
++
+ const char* libwinevbs_hresult_name(HRESULT hr)
+ {
+    switch (hr) {
+diff --git a/wine/dlls/vbscript/global.c b/wine/dlls/vbscript/global.c
+index 0e0e144..351f967 100644
+--- a/wine/dlls/vbscript/global.c
++++ b/wine/dlls/vbscript/global.c
+@@ -33,6 +33,7 @@
+ #include <locale.h>
+ #include "scrrun_private.h"
+ HRESULT libwinevbs_create_object(const WCHAR *progid, IClassFactory* cf, IUnknown** obj);
++int libwinevbs_msgbox(const char *prompt, int type, const char *title);
+ extern HRESULT WINAPI WshShellFactory_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**);
+ #endif
+ 
+@@ -2834,9 +2835,12 @@ static HRESULT Global_MsgBox(BuiltinDisp *This, VARIANT *args, unsigned args_cnt
+         hres = show_msgbox(This->ctx, prompt, type, title, res);
+ #else
+     if(SUCCEEDED(hres)) {
+-        char buf[2048];
++        char buf[2048], title_buf[256] = {0};
+         WideCharToMultiByte(CP_ACP, 0, prompt, -1, buf, sizeof(buf) - 1, NULL, NULL);
++        if (title)
++            WideCharToMultiByte(CP_ACP, 0, title, -1, title_buf, sizeof(title_buf) - 1, NULL, NULL);
+         libwinevbs_log(LIBWINEVBS_LOG_INFO, "vbscript: MsgBox prompt=%s", buf);
++        hres = return_short(res, libwinevbs_msgbox(buf, type, title ? title_buf : NULL));
+     }
+ #endif
+ 
diff --git a/patches/vpinball/0007-emscripten-msgbox-dialog.patch b/patches/vpinball/0007-emscripten-msgbox-dialog.patch
new file mode 100644
index 0000000..c7dcdec
--- /dev/null
+++ b/patches/vpinball/0007-emscripten-msgbox-dialog.patch
@@ -0,0 +1,60 @@
+diff --git a/src/core/VPApp.cpp b/src/core/VPApp.cpp
+index 7175dd2..f05a324 100644
+--- a/src/core/VPApp.cpp
++++ b/src/core/VPApp.cpp
+@@ -36,6 +36,10 @@
+ #include <libwinevbs/libwinevbs.h>
+ #endif
+ 
++#ifdef __EMSCRIPTEN__
++#include <emscripten.h>
++#endif
++
+ #include "parts/ball.h"
+ #include "parts/timer.h"
+ #include "parts/flipper.h"
+@@ -273,6 +277,34 @@ int VPApp::GetLogicalNumberOfProcessors() const
+    return m_logicalNumberOfProcessors;
+ }
+ 
++#ifdef __EMSCRIPTEN__
++// VBScript's MsgBox() must return synchronously (its VARIANT result is used
++// right after the call, in the same script statement) - window.confirm()/
++// alert() are the only browser APIs that block JS execution and return a
++// value synchronously, so they're used here directly rather than routing
++// through any async/JS-callback mechanism the host page might otherwise want
++// to customize the look of (which would require Asyncify to suspend the
++// call, since single-threaded builds have no other way to block for it).
++// type is the raw VBScript "buttons" argument (MB_OK=0, MB_OKCANCEL=1,
++// MB_ABORTRETRYIGNORE=2, MB_YESNOCANCEL=3, MB_YESNO=4, MB_RETRYCANCEL=5).
++// The returned id matches vbOK(1)/vbCancel(2)/vbYes(6)/vbNo(7).
++static int EmscriptenMsgBox(const char* prompt, int type, const char* title)
++{
++   const string message = (title && title[0]) ? (string(title) + "\n\n" + prompt) : string(prompt);
++   switch (type & 0x0F)
++   {
++      case 1: // MB_OKCANCEL
++         return EM_ASM_INT({ return confirm(UTF8ToString($0)) ? 1 : 0; }, message.c_str()) ? 1 /* IDOK */ : 2 /* IDCANCEL */;
++      case 3: // MB_YESNOCANCEL - Cancel isn't distinguishable from No via confirm(), best effort
++      case 4: // MB_YESNO
++         return EM_ASM_INT({ return confirm(UTF8ToString($0)) ? 1 : 0; }, message.c_str()) ? 6 /* IDYES */ : 7 /* IDNO */;
++      default:
++         EM_ASM_({ alert(UTF8ToString($0)); }, message.c_str());
++         return 1; // IDOK
++   }
++}
++#endif
++
+ void VPApp::InitInstance()
+ {
+    std::filesystem::path iniFileName = m_commandLineCustomSettingsFileName;
+@@ -325,6 +357,9 @@ void VPApp::InitInstance()
+          delete[] buffer;
+       }
+    };
++#ifdef __EMSCRIPTEN__
++   callbacks.msgbox = &EmscriptenMsgBox;
++#endif
+    libwinevbs_init(&callbacks);
+ #endif
+