diff --git a/Source/diablo.cpp b/Source/diablo.cpp
index 9a61fd6..5138355 100644
--- a/Source/diablo.cpp
+++ b/Source/diablo.cpp
@@ -276,9 +276,19 @@ bool __cdecl diablo_get_not_running()
 	CreateEventA(NULL, FALSE, FALSE, "DiabloEvent");
 	return GetLastError() != ERROR_ALREADY_EXISTS;
 }
+
+void preMainInit(){
+    engine_cpp_init_2();
+    dx_cpp_init_2();
+    dthread_cpp_init_2();
+    nthread_cpp_init_2();
+    log_cpp_init_2();
 
+}
+
 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 {
+    preMainInit();
 	HINSTANCE v4; // esi
 	//int v11; // ecx
 	char Filename[260]; // [esp+8h] [ebp-10Ch]
diff --git a/Source/dthread.cpp b/Source/dthread.cpp
index da0270a..291f48e 100644
--- a/Source/dthread.cpp
+++ b/Source/dthread.cpp
@@ -24,14 +24,12 @@ struct dthread_cpp_init_1
 // 47A460: using guessed type int dthread_inf;
 // 52A4E0: using guessed type int dthread_cpp_init_value;
 
-struct dthread_cpp_init_2
+void __cdecl dthread_cpp_init_2()
 {
-	dthread_cpp_init_2()
-	{
-		dthread_init_mutex();
-		dthread_cleanup_mutex_atexit();
-	}
-} _dthread_cpp_init_2;
+    dthread_init_mutex();
+    dthread_cleanup_mutex_atexit();
+}
+
 
 void __cdecl dthread_init_mutex()
 {
diff --git a/Source/dx.cpp b/Source/dx.cpp
index 88a6501..cc9027f 100644
--- a/Source/dx.cpp
+++ b/Source/dx.cpp
@@ -27,14 +27,11 @@ struct dx_cpp_init_1
 // 47A464: using guessed type int dx_inf;
 // 52A514: using guessed type int dx_cpp_init_value;
 
-struct dx_cpp_init_2
+void __cdecl dx_cpp_init_2()
 {
-	dx_cpp_init_2()
-	{
-		dx_init_mutex();
-		dx_cleanup_mutex_atexit();
-	}
-} _dx_cpp_init_2;
+    dx_init_mutex();
+    dx_cleanup_mutex_atexit();
+}
 
 void __cdecl dx_init_mutex()
 {
diff --git a/Source/engine.cpp b/Source/engine.cpp
index ac8f525..cc430bc 100644
--- a/Source/engine.cpp
+++ b/Source/engine.cpp
@@ -1879,14 +1879,12 @@ int __fastcall random(int idx, int v)
 	return v4 % v2;
 }
 
-struct engine_cpp_init_2
+void __cdecl engine_cpp_init_2()
 {
-	engine_cpp_init_2()
-	{
-		mem_init_mutex();
-		mem_atexit_mutex();
-	}
-} _engine_cpp_init_2;
+    mem_init_mutex();
+    mem_atexit_mutex();
+}
+
 
 void __cdecl mem_init_mutex()
 {
diff --git a/Source/logging.cpp b/Source/logging.cpp
index 19f4259..59cd1d1 100644
--- a/Source/logging.cpp
+++ b/Source/logging.cpp
@@ -26,14 +26,11 @@ struct log_cpp_init_1
 // 47F070: using guessed type int log_inf;
 // 646A30: using guessed type int log_cpp_init_value;
 
-struct log_cpp_init_2
+void __cdecl log_cpp_init_2()
 {
-	log_cpp_init_2()
-	{
-		log_init_mutex();
-		j_log_cleanup_mutex();
-	}
-} _log_cpp_init_2;
+    log_init_mutex();
+    j_log_cleanup_mutex();
+}
 
 void __cdecl log_init_mutex()
 {
diff --git a/Source/mainmenu.cpp b/Source/mainmenu.cpp
index ab795ac..854db73 100644
--- a/Source/mainmenu.cpp
+++ b/Source/mainmenu.cpp
@@ -108,45 +108,43 @@ LABEL_6:
 
 void __fastcall mainmenu_action(int option)
 {
-	int v1; // eax
+
+	int quit; // eax
 	int a2; // [esp+0h] [ebp-4h]
 
-	a2 = option;
+	//a2 = option;// development history seems to be showing here
 	mainmenu_refresh_music();
-	do
-	{
-		while ( 1 )
-		{
-			a2 = 0;
-			if ( !UiMainMenuDialog("Diablo v1.09", &a2, effects_play_sound, 30) )
-				TermMsg("Unable to display mainmenu");
-			if ( a2 == 1 )
-				break;
-			switch ( a2 )
-			{
-				case MAINMENU_MULTIPLAYER:
-					v1 = mainmenu_multi_player();
-					goto LABEL_15;
-				case MAINMENU_REPLAY_INTRO:
-					goto LABEL_10;
-				case MAINMENU_SHOW_CREDITS:
-					UiCreditsDialog(16);
-					break;
-				case MAINMENU_EXIT_DIABLO:
-					goto LABEL_16;
-				case MAINMENU_ATTRACT_MODE:
-LABEL_10:
-					if ( window_activated )
-						mainmenu_play_intro();
-					break;
-			}
-		}
-		v1 = mainmenu_single_player();
-LABEL_15:
-		;
-	}
-	while ( v1 );
-LABEL_16:
+	do{
+	    quit = 1;
+        a2 = 0;
+        if ( !UiMainMenuDialog("Diablo v1.09", &a2, effects_play_sound, 30) ){
+            TermMsg("Unable to display mainmenu");
+            //old code would loop endlessly here (probably)
+            break;//new code will quit.
+        }
+
+        switch ( a2 )
+        {
+            case MAINMENU_SINGLE_PLAYER:
+                quit = mainmenu_single_player();
+                break;
+            case MAINMENU_MULTIPLAYER:
+                quit = mainmenu_multi_player();
+                break;
+            case MAINMENU_SHOW_CREDITS:
+                UiCreditsDialog(16);
+                break;
+            case MAINMENU_EXIT_DIABLO:
+                quit = 0;
+                break;
+            case MAINMENU_REPLAY_INTRO:
+            case MAINMENU_ATTRACT_MODE:
+                if ( window_activated )
+                    mainmenu_play_intro();
+                break;
+        }
+	}while ( quit );
+
 	music_stop();
 }
 // 634980: using guessed type int window_activated;
diff --git a/Source/nthread.cpp b/Source/nthread.cpp
index ab0f7c2..cdbce45 100644
--- a/Source/nthread.cpp
+++ b/Source/nthread.cpp
@@ -35,14 +35,11 @@ struct nthread_cpp_init_1
 // 47F164: using guessed type int nthread_inf;
 // 679700: using guessed type int nthread_cpp_init_value;
 
-struct nthread_cpp_init_2
+void __cdecl nthread_cpp_init_2()
 {
-	nthread_cpp_init_2()
-	{
-		nthread_init_mutex();
-		nthread_cleanup_mutex_atexit();
-	}
-} _nthread_cpp_init_2;
+    nthread_init_mutex();
+    nthread_cleanup_mutex_atexit();
+}
 
 void __cdecl nthread_init_mutex()
 {