diff --git a/src/Backends/Platform.h b/src/Backends/Platform.h
index 541e414b..6e693047 100644
--- a/src/Backends/Platform.h
+++ b/src/Backends/Platform.h
@@ -11,3 +11,5 @@ void PlatformBackend_GetBasePath(char *string_buffer);
 BOOL PlatformBackend_SystemTask(void);
 
 void PlatformBackend_ShowMessageBox(const char *title, const char *message);
+
+unsigned long PlatformBackend_GetTicks(void);
diff --git a/src/Backends/Platform/SDL2.cpp b/src/Backends/Platform/SDL2.cpp
index 711cb1f3..702b5d16 100644
--- a/src/Backends/Platform/SDL2.cpp
+++ b/src/Backends/Platform/SDL2.cpp
@@ -257,3 +257,8 @@ void PlatformBackend_ShowMessageBox(const char *title, const char *message)
 {
 	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, title, message, NULL);
 }
+
+unsigned long PlatformBackend_GetTicks(void)
+{
+	return SDL_GetTicks();
+}
diff --git a/src/Game.cpp b/src/Game.cpp
index 32feef26..8ef8b97a 100644
--- a/src/Game.cpp
+++ b/src/Game.cpp
@@ -4,10 +4,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "SDL.h"
-
 #include "WindowsWrapper.h"
 
+#include "Backends/Platform.h"
 #include "ArmsItem.h"
 #include "Back.h"
 #include "Boss.h"
@@ -215,8 +214,8 @@ int ModeOpening(void)
 		++gCounter;
 	}
 
-	wait = SDL_GetTicks();
-	while (SDL_GetTicks() < wait + 500)
+	wait = PlatformBackend_GetTicks();
+	while (PlatformBackend_GetTicks() < wait + 500)
 	{
 		CortBox(&grcGame, 0x000000);
 		PutFramePerSecound();
@@ -461,8 +460,8 @@ int ModeTitle(void)
 	ChangeMusic(MUS_SILENCE);
 
 	// Black screen when option is selected
-	wait = SDL_GetTicks();
-	while (SDL_GetTicks() < wait + 1000)
+	wait = PlatformBackend_GetTicks();
+	while (PlatformBackend_GetTicks() < wait + 1000)
 	{
 		CortBox(&grcGame, 0);
 		PutFramePerSecound();
@@ -692,9 +691,9 @@ BOOL Game(void)
 	if (!LoadGenericData())
 	{
 #ifdef JAPANESE
-		SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "エラー", "汎用ファイルが読めない", NULL);
+		PlatformBackend_ShowMessageBox("エラー", "汎用ファイルが読めない");
 #else
-		SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", "Couldn't read general purpose files", NULL);
+		PlatformBackend_ShowMessageBox("Error", "Couldn't read general purpose files");
 #endif
 
 		return FALSE;
@@ -708,9 +707,9 @@ BOOL Game(void)
 	if (!LoadNpcTable(path))
 	{
 #ifdef JAPANESE
-		SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "エラー", "NPCテーブルが読めない", NULL);
+		PlatformBackend_ShowMessageBox("エラー", "NPCテーブルが読めない");
 #else
-		SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", "Couldn't read the NPC table", NULL);
+		PlatformBackend_ShowMessageBox("Error", "Couldn't read the NPC table");
 #endif
 
 		return FALSE;