diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5411e6e..bb6aca1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -261,3 +261,4 @@ target_include_directories(${EXECUTABLE_NAME} PRIVATE ${ZLIB_INCLUDE_DIRS})
 add_subdirectory("third_party/sdl2")
 target_link_libraries(${EXECUTABLE_NAME} ${SDL2_LIBRARIES})
 target_include_directories(${EXECUTABLE_NAME} PRIVATE ${SDL2_INCLUDE_DIRS})
+add_definitions(-DSDL_MAIN_HANDLED)
\ No newline at end of file
diff --git a/src/character_selector.cc b/src/character_selector.cc
index 3ad27ab..22141d1 100644
--- a/src/character_selector.cc
+++ b/src/character_selector.cc
@@ -246,6 +246,10 @@ bool characterSelectorWindowInit()
 
     int characterSelectorWindowX = (screenGetWidth() - CS_WINDOW_WIDTH) / 2;
     int characterSelectorWindowY = (screenGetHeight() - CS_WINDOW_HEIGHT) / 2;
+    CacheEntry* backgroundFrmHandle;
+    int backgroundFid;
+    unsigned char* backgroundFrmData;
+
     gCharacterSelectorWindow = windowCreate(characterSelectorWindowX, characterSelectorWindowY, CS_WINDOW_WIDTH, CS_WINDOW_HEIGHT, _colorTable[0], 0);
     if (gCharacterSelectorWindow == -1) {
         goto err;
@@ -256,9 +260,8 @@ bool characterSelectorWindowInit()
         goto err;
     }
 
-    CacheEntry* backgroundFrmHandle;
-    int backgroundFid = buildFid(6, 174, 0, 0, 0);
-    unsigned char* backgroundFrmData = artLockFrameData(backgroundFid, 0, 0, &backgroundFrmHandle);
+    backgroundFid = buildFid(6, 174, 0, 0, 0);
+    backgroundFrmData = artLockFrameData(backgroundFid, 0, 0, &backgroundFrmHandle);
     if (backgroundFrmData == NULL) {
         goto err;
     }
diff --git a/src/color.cc b/src/color.cc
index bac5c2d..75f81e8 100644
--- a/src/color.cc
+++ b/src/color.cc
@@ -354,7 +354,7 @@ void _setMixTableColor(int a1)
 }
 
 // 0x4C78E4
-bool colorPaletteLoad(char* path)
+bool colorPaletteLoad(const char* path)
 {
     if (gColorFileNameMangler != NULL) {
         path = gColorFileNameMangler(path);
diff --git a/src/color.h b/src/color.h
index 0ad16c7..9ddf65d 100644
--- a/src/color.h
+++ b/src/color.h
@@ -5,7 +5,7 @@
 
 #include <stdlib.h>
 
-typedef char*(ColorFileNameManger)(char*);
+typedef const char*(ColorFileNameManger)(const char*);
 typedef void(ColorTransitionCallback)();
 
 typedef int(ColorPaletteFileOpenProc)(const char* path, int mode);
@@ -54,7 +54,7 @@ void _setSystemPaletteEntries(unsigned char* a1, int a2, int a3);
 void _setIntensityTableColor(int a1);
 void _setIntensityTables();
 void _setMixTableColor(int a1);
-bool colorPaletteLoad(char* path);
+bool colorPaletteLoad(const char* path);
 char* _colorError();
 void _buildBlendTable(unsigned char* ptr, unsigned char ch);
 void _rebuildColorBlendTables();
diff --git a/src/db.cc b/src/db.cc
index b00d767..5a54d8d 100644
--- a/src/db.cc
+++ b/src/db.cc
@@ -599,6 +599,19 @@ int fileWriteUInt32List(File* stream, unsigned int* arr, int count)
     return fileWriteInt32List(stream, (int*)arr, count);
 }
 
+std::vector<fs::path> fileNameList(const fs::path& path, const std::regex& pattern)
+{
+    std::vector<fs::path> result;
+    fs::directory_iterator di(path);
+
+    std::for_each(begin(di), end(di), [&](const fs::directory_entry& de) {
+        const fs::path& p(de.path());
+        if (std::regex_match(p.string(), pattern))
+            result.push_back(p);
+    });
+    return result;
+}
+
 // 0x4C6628
 int fileNameListInit(const char* pattern, char*** fileNameListPtr, int a3, int a4)
 {
diff --git a/src/db.h b/src/db.h
index 6d4ce6e..857f95f 100644
--- a/src/db.h
+++ b/src/db.h
@@ -4,8 +4,13 @@
 #include "memory_defs.h"
 #include "xfile.h"
 
+#include <vector>
+#include <filesystem>
+#include <regex>
 #include <stddef.h>
 
+namespace fs = std::filesystem;
+
 typedef XFile File;
 typedef void FileReadProgressHandler();
 typedef char* StrdupProc(const char* string);
@@ -69,6 +74,7 @@ int fileWriteUInt16List(File* stream, unsigned short* arr, int count);
 int fileWriteInt32List(File* stream, int* arr, int count);
 int _db_fwriteLongCount(File* stream, int* arr, int count);
 int fileWriteUInt32List(File* stream, unsigned int* arr, int count);
+std::vector<fs::path> fileNameList(const fs::path& path, const std::regex& pattern);
 int fileNameListInit(const char* pattern, char*** fileNames, int a3, int a4);
 void fileNameListFree(char*** fileNames, int a2);
 void _db_register_mem(MallocProc* mallocProc, StrdupProc* strdupProc, FreeProc* freeProc);
diff --git a/src/file_find.cc b/src/file_find.cc
index 59c3f13..bc8363a 100644
--- a/src/file_find.cc
+++ b/src/file_find.cc
@@ -47,7 +47,7 @@ bool fileFindNext(DirectoryFileFindData* findData)
 // 0x4E63CC
 bool findFindClose(DirectoryFileFindData* findData)
 {
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) || defined(__MINGW32__)
     FindClose(findData->hFind);
 #else
     if (closedir(findData->dir) != 0) {
diff --git a/src/game_dialog.cc b/src/game_dialog.cc
index 01e5caa..2c9b2c7 100644
--- a/src/game_dialog.cc
+++ b/src/game_dialog.cc
@@ -1539,6 +1539,11 @@ int gameDialogSetReviewOptionText(const char* string)
 // 0x446288
 int _gdProcessInit()
 {
+    int upBtn;
+    int downBtn;
+    int optionsWindowX;
+    int optionsWindowY;
+
     int fid;
 
     int replyWindowX = (screenGetWidth() - GAME_DIALOG_WINDOW_WIDTH) / 2 + GAME_DIALOG_REPLY_WINDOW_X;
@@ -1549,7 +1554,7 @@ int _gdProcessInit()
     }
 
     // Top part of the reply window - scroll up.
-    int upBtn = buttonCreate(gGameDialogReplyWindow, 1, 1, 377, 28, -1, -1, KEY_ARROW_UP, -1, NULL, NULL, NULL, 32);
+    upBtn = buttonCreate(gGameDialogReplyWindow, 1, 1, 377, 28, -1, -1, KEY_ARROW_UP, -1, NULL, NULL, NULL, 32);
     if (upBtn == -1) {
         goto err_1;
     }
@@ -1558,7 +1563,7 @@ int _gdProcessInit()
     buttonSetMouseCallbacks(upBtn, _reply_arrow_up, _reply_arrow_restore, 0, 0);
 
     // Bottom part of the reply window - scroll down.
-    int downBtn = buttonCreate(gGameDialogReplyWindow, 1, 29, 377, 28, -1, -1, KEY_ARROW_DOWN, -1, NULL, NULL, NULL, 32);
+    downBtn = buttonCreate(gGameDialogReplyWindow, 1, 29, 377, 28, -1, -1, KEY_ARROW_DOWN, -1, NULL, NULL, NULL, 32);
     if (downBtn == -1) {
         goto err_1;
     }
@@ -1566,8 +1571,8 @@ int _gdProcessInit()
     buttonSetCallbacks(downBtn, _gsound_red_butt_press, _gsound_red_butt_release);
     buttonSetMouseCallbacks(downBtn, _reply_arrow_down, _reply_arrow_restore, 0, 0);
 
-    int optionsWindowX = (screenGetWidth() - GAME_DIALOG_WINDOW_WIDTH) / 2 + GAME_DIALOG_OPTIONS_WINDOW_X;
-    int optionsWindowY = (screenGetHeight() - GAME_DIALOG_WINDOW_HEIGHT) / 2 + GAME_DIALOG_OPTIONS_WINDOW_Y;
+    optionsWindowX = (screenGetWidth() - GAME_DIALOG_WINDOW_WIDTH) / 2 + GAME_DIALOG_OPTIONS_WINDOW_X;
+    optionsWindowY = (screenGetHeight() - GAME_DIALOG_WINDOW_HEIGHT) / 2 + GAME_DIALOG_OPTIONS_WINDOW_Y;
     gGameDialogOptionsWindow = windowCreate(optionsWindowX, optionsWindowY, GAME_DIALOG_OPTIONS_WINDOW_WIDTH, GAME_DIALOG_OPTIONS_WINDOW_HEIGHT, 256, WINDOW_FLAG_0x04);
     if (gGameDialogOptionsWindow == -1) {
         goto err_2;
diff --git a/src/game_movie.cc b/src/game_movie.cc
index 8dd2ca3..8bce85e 100644
--- a/src/game_movie.cc
+++ b/src/game_movie.cc
@@ -46,7 +46,7 @@ const char* gMovieFileNames[MOVIE_COUNT] = {
 };
 
 // 0x518DE4
-char* gMoviePaletteFilePaths[MOVIE_COUNT] = {
+const char* gMoviePaletteFilePaths[MOVIE_COUNT] = {
     NULL,
     "art\\cuts\\introsub.pal",
     "art\\cuts\\eldersub.pal",
@@ -209,7 +209,7 @@ int gameMoviePlay(int movie, int flags)
     int oldTextColor;
     int oldFont;
     if (subtitlesEnabled) {
-        char* subtitlesPaletteFilePath;
+        const char* subtitlesPaletteFilePath;
         if (gMoviePaletteFilePaths[movie] != NULL) {
             subtitlesPaletteFilePath = gMoviePaletteFilePaths[movie];
         } else {
diff --git a/src/game_movie.h b/src/game_movie.h
index 7ca8cb0..a85bad9 100644
--- a/src/game_movie.h
+++ b/src/game_movie.h
@@ -35,7 +35,7 @@ typedef enum GameMovie {
 extern const float flt_50352A;
 
 extern const char* gMovieFileNames[MOVIE_COUNT];
-extern char* gMoviePaletteFilePaths[MOVIE_COUNT];
+extern const char* gMoviePaletteFilePaths[MOVIE_COUNT];
 extern bool gGameMovieIsPlaying;
 extern bool gGameMovieFaded;
 
diff --git a/src/loadsave.cc b/src/loadsave.cc
index a67d93f..440bc52 100644
--- a/src/loadsave.cc
+++ b/src/loadsave.cc
@@ -40,12 +40,15 @@
 #include "word_wrap.h"
 #include "world_map.h"
 
+#include <algorithm>
+#include <filesystem>
+#include <vector>
 #include <assert.h>
 #include <direct.h>
 #include <stdio.h>
 #include <time.h>
 
-#include <algorithm>
+namespace fs = std::filesystem;
 
 #define LS_WINDOW_WIDTH 640
 #define LS_WINDOW_HEIGHT 480
@@ -2632,36 +2635,21 @@ int _EraseSave()
 {
     debugPrint("\nLOADSAVE: Erasing save(bad) slot...\n");
 
-    sprintf(_gmpath, "%s\\%s\\%s%.2d\\", _patches, "SAVEGAME", "SLOT", _slot_cursor + 1);
-    strcpy(_str0, _gmpath);
-    strcat(_str0, "SAVE.DAT");
-    remove(_str0);
+    std::stringstream slot;
+    slot << "SLOT" << std::setw(2) << std::setfill( '0') << _slot_cursor + 1;
 
-    sprintf(_gmpath, "%s\\%s%.2d\\", "SAVEGAME", "SLOT", _slot_cursor + 1);
-    sprintf(_str0, "%s*.%s", _gmpath, "SAV");
+    // TODO: What's _patches value? Needs to be optimized.
+    fs::path savePath(fs::path(_patches) / fs::path("SAVEGAME") / fs::path(slot.str()));
 
-    char** fileList;
-    int fileListLength = fileNameListInit(_str0, &fileList, 0, 0);
-    if (fileListLength == -1) {
+    fs::remove(fs::path(savePath).append("SAVE.DAT"));
+
+    std::vector<fs::path> fileList = fileNameList(savePath, std::regex("^.+\\.SAV$"));
+    if (fileList.empty())
         return -1;
-    }
 
-    sprintf(_gmpath, "%s\\%s\\%s%.2d\\", _patches, "SAVEGAME", "SLOT", _slot_cursor + 1);
-    for (int index = fileListLength - 1; index >= 0; index--) {
-        strcpy(_str0, _gmpath);
-        strcat(_str0, fileList[index]);
-        remove(_str0);
-    }
-
-    fileNameListFree(&fileList, 0);
-
-    sprintf(_gmpath, "%s\\%s\\%s%.2d\\", _patches, "SAVEGAME", "SLOT", _slot_cursor + 1);
-
-    char* v1 = _strmfe(_str1, "AUTOMAP.DB", "SAV");
-    strcpy(_str0, _gmpath);
-    strcat(_str0, v1);
-
-    remove(_str0);
+    std::for_each(fileList.begin(), fileList.end(), [] (const fs::path& p) {
+        fs::remove(p);
+    });
 
     return 0;
 }
diff --git a/src/mmx.cc b/src/mmx.cc
index 205bffb..27f9edc 100644
--- a/src/mmx.cc
+++ b/src/mmx.cc
@@ -9,6 +9,9 @@
 // 0x4E08A0
 bool mmxIsSupported()
 {
+#if defined(__MINGW32__)
+    return false;
+#else
     int v1;
 
     // TODO: There are other ways to determine MMX using FLAGS register.
@@ -22,6 +25,7 @@ bool mmxIsSupported()
     }
 
     return v1 != 0;
+#endif
 }
 
 // 0x4E0DB0
diff --git a/src/object.cc b/src/object.cc
index 55d68fd..ee25871 100644
--- a/src/object.cc
+++ b/src/object.cc
@@ -260,6 +260,9 @@ char _obj_seen[5001];
 // 0x488780
 int objectsInit(unsigned char* buf, int width, int height, int pitch)
 {
+    int dudeFid;
+    int eggFid;
+
     memset(_obj_seen, 0, 5001);
     dword_639D98 = width + 320;
     _updateAreaPixelBounds = -320;
@@ -308,7 +311,7 @@ int objectsInit(unsigned char* buf, int width, int height, int pitch)
     gObjectsWindowBufferSize = height * width;
     gObjectsWindowPitch = pitch;
 
-    int dudeFid = buildFid(1, _art_vault_guy_num, 0, 0, 0);
+    dudeFid = buildFid(1, _art_vault_guy_num, 0, 0, 0);
     objectCreateWithFidPid(&gDude, dudeFid, 0x1000000);
 
     gDude->flags |= OBJECT_FLAG_0x400;
@@ -322,7 +325,7 @@ int objectsInit(unsigned char* buf, int width, int height, int pitch)
         exit(1);
     }
 
-    int eggFid = buildFid(6, 2, 0, 0, 0);
+    eggFid = buildFid(6, 2, 0, 0, 0);
     objectCreateWithFidPid(&gEgg, eggFid, -1);
     gEgg->flags |= OBJECT_FLAG_0x400;
     gEgg->flags |= OBJECT_TEMPORARY;
diff --git a/src/win32.h b/src/win32.h
index 45056cd..a06853c 100644
--- a/src/win32.h
+++ b/src/win32.h
@@ -6,6 +6,7 @@
 #include <windows.h>
 
 #include <mmreg.h>
+#include <mmsystem.h>
 
 #define DIRECTSOUND_VERSION 0x0300
 #include <dsound.h>