diff --git a/Makefile b/Makefile
index 71a31948..de65fa4e 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ ifeq ($(DEBUG_SAVE), 1)
 	CXXFLAGS += -DDEBUG_SAVE
 endif
 
-CXXFLAGS += -std=c++98 -MMD -MP -MF $@.d -DWINDOWS `pkg-config sdl2 --cflags`
+CXXFLAGS += -std=c++98 -MMD -MP -MF $@.d `pkg-config sdl2 --cflags`
 LIBS += -lkernel32 -lgdi32 -lddraw -ldinput -ldsound -lversion -lshlwapi -limm32 -lwinmm -ldxguid
 
 ifeq ($(STATIC), 1)
diff --git a/src/Back.cpp b/src/Back.cpp
index 443503a2..0cc7a99e 100644
--- a/src/Back.cpp
+++ b/src/Back.cpp
@@ -32,30 +32,6 @@ BOOL InitBack(const char *fName, int type)
 	if (fp == NULL)
 		return FALSE;
 
-#ifdef NONPORTABLE
-	// This is ridiculously platform-dependant:
-	// It should break on big-endian CPUs, and platforms where short isn't 16-bit and long isn't 32-bit.
-	unsigned short bmp_header_buffer[7];	// These names aren't the original. This ruins the stack frame layout.
-	unsigned long bmp_header_buffer2[10];
-
-	fread(bmp_header_buffer, 14, 1, fp);
-
-	// Check if this is a valid bitmap file
-	if (bmp_header_buffer[0] != 0x4D42)	// 'MB' (we use hex to prevent a compiler warning)
-	{
-#ifdef FIX_BUGS
-		// The original game forgets to close fp
-		fclose(fp);
-#endif
-		return FALSE;
-	}
-
-	fread(bmp_header_buffer2, 40, 1, fp);
-	fclose(fp);
-
-	gBack.partsW = bmp_header_buffer2[1];
-	gBack.partsH = bmp_header_buffer2[2];
-#else
 	if (fgetc(fp) != 'B' || fgetc(fp) != 'M')
 	{
 		fclose(fp);
@@ -67,7 +43,6 @@ BOOL InitBack(const char *fName, int type)
 	gBack.partsW = File_ReadLE32(fp);
 	gBack.partsH = File_ReadLE32(fp);
 	fclose(fp);
-#endif
 
 	// Set background stuff and load texture
 	gBack.flag = 1;
diff --git a/src/Config.cpp b/src/Config.cpp
index d66d1fd6..8a0c3411 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -25,10 +25,6 @@ BOOL LoadConfigData(CONFIG *conf)
 	if (fp == NULL)
 		return FALSE;
 
-	// Read data
-#ifdef NONPORTABLE
-	size_t fread_result = fread(conf, sizeof(CONFIG), 1, fp); // Not the original name
-#else
 	// Read the version id and font name
 	fread(conf->proof, sizeof(conf->proof), 1, fp);
 	fread(conf->font_name, sizeof(conf->font_name), 1, fp);
@@ -45,17 +41,12 @@ BOOL LoadConfigData(CONFIG *conf)
 	conf->bJoystick = File_ReadLE32(fp);
 	for (int button = 0; button < 8; button++)
 		conf->joystick_button[button] = File_ReadLE32(fp);
-#endif
 
 	// Close file
 	fclose(fp);
 
 	// Check if version is not correct, and return if it failed
-#ifdef NONPORTABLE
-	if (fread_result != 1 || strcmp(conf->proof, config_magic))
-#else
 	if (strcmp(conf->proof, config_magic))
-#endif
 	{
 		memset(conf, 0, sizeof(CONFIG));
 		return FALSE;
diff --git a/src/Map.cpp b/src/Map.cpp
index f0cd6b9e..4540c272 100644
--- a/src/Map.cpp
+++ b/src/Map.cpp
@@ -51,14 +51,8 @@ BOOL LoadMapData2(const char *path_map)
 	{
 		fread(&dum, 1, 1, fp);
 		// Get width and height
-#ifdef NONPORTABLE
-		// This fails on big-endian hardware, and platforms where short is not two bytes long.
-		fread(&gMap.width, 2, 1, fp);
-		fread(&gMap.length, 2, 1, fp);
-#else
 		gMap.width = File_ReadLE16(fp);
 		gMap.length = File_ReadLE16(fp);
-#endif
 
 		if (gMap.data == NULL)
 		{
diff --git a/src/MycParam.cpp b/src/MycParam.cpp
index e18eb37c..cd386ffc 100644
--- a/src/MycParam.cpp
+++ b/src/MycParam.cpp
@@ -2,6 +2,8 @@
 
 #include <stdio.h>
 
+#include "SDL.h"
+
 #include "WindowsWrapper.h"
 
 #include "ArmsItem.h"
@@ -450,9 +452,6 @@ BOOL SaveTimeCounter()
 	if (fp)
 	{
 		// Read data
-#ifdef NONPORTABLE
-		fread(&rec, sizeof(REC), 1, fp);
-#else
 		rec.counter[0] = File_ReadLE32(fp);
 		rec.counter[1] = File_ReadLE32(fp);
 		rec.counter[2] = File_ReadLE32(fp);
@@ -461,21 +460,13 @@ BOOL SaveTimeCounter()
 		rec.random[1] = fgetc(fp);
 		rec.random[2] = fgetc(fp);
 		rec.random[3] = fgetc(fp);
-#endif
 		fclose(fp);
 
 		p = (unsigned char*)&rec.counter[0];
-#ifdef NONPORTABLE
-		p[0] -= rec.random[0];
-		p[1] -= rec.random[0];
-		p[2] -= rec.random[0];
-		p[3] -= rec.random[0] / 2;
-#else
 		p[0] -= (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[0]) : (rec.random[0] / 2);
 		p[1] -= rec.random[0];
 		p[2] -= rec.random[0];
 		p[3] -= (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[0] / 2) : (rec.random[0]);
-#endif
 		// If this is faster than our new time, quit
 		if (rec.counter[0] < time_count)
 			return TRUE;
@@ -488,26 +479,16 @@ BOOL SaveTimeCounter()
 		rec.random[i] = Random(0, 250) + i;
 
 		p = (unsigned char*)&rec.counter[i];
-#ifdef NONPORTABLE
-		p[0] += rec.random[i];
-		p[1] += rec.random[i];
-		p[2] += rec.random[i];
-		p[3] += rec.random[i] / 2;
-#else
 		p[0] += (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[i]) : (rec.random[i] / 2);
 		p[1] += rec.random[i];
 		p[2] += rec.random[i];
 		p[3] += (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[i] / 2) : (rec.random[i]);
-#endif
 	}
 
 	fp = fopen(path, "wb");
 	if (fp == NULL)
 		return FALSE;
 
-#ifdef NONPORTABLE
-	fwrite(&rec, sizeof(REC), 1, fp);
-#else
 	File_WriteLE32(rec.counter[0], fp);
 	File_WriteLE32(rec.counter[1], fp);
 	File_WriteLE32(rec.counter[2], fp);
@@ -516,7 +497,6 @@ BOOL SaveTimeCounter()
 	fputc(rec.random[1], fp);
 	fputc(rec.random[2], fp);
 	fputc(rec.random[3], fp);
-#endif
 
 	fclose(fp);
 	return TRUE;
@@ -538,9 +518,6 @@ int LoadTimeCounter()
 	REC rec;
 
 	// Read data
-#ifdef NONPORTABLE
-	fread(&rec, sizeof(REC), 1, fp);
-#else
 	rec.counter[0] = File_ReadLE32(fp);
 	rec.counter[1] = File_ReadLE32(fp);
 	rec.counter[2] = File_ReadLE32(fp);
@@ -549,24 +526,16 @@ int LoadTimeCounter()
 	rec.random[1] = fgetc(fp);
 	rec.random[2] = fgetc(fp);
 	rec.random[3] = fgetc(fp);
-#endif
 	fclose(fp);
 
 	// Decode from checksum
 	for (i = 0; i < 4; i++)
 	{
 		p = (unsigned char*)&rec.counter[i];
-#ifdef NONPORTABLE
-		p[0] -= rec.random[i];
-		p[1] -= rec.random[i];
-		p[2] -= rec.random[i];
-		p[3] -= rec.random[i] / 2;
-#else
 		p[0] -= (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[i]) : (rec.random[i] / 2);
 		p[1] -= rec.random[i];
 		p[2] -= rec.random[i];
 		p[3] -= (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? (rec.random[i] / 2) : (rec.random[i]);
-#endif
 	}
 
 	// Verify checksum's result
diff --git a/src/NpChar.cpp b/src/NpChar.cpp
index bef60e69..ba3d9fd0 100644
--- a/src/NpChar.cpp
+++ b/src/NpChar.cpp
@@ -79,11 +79,7 @@ BOOL LoadEvent(const char *path_event)
 	}
 
 	// Get amount of NPCs
-#ifdef NONPORTABLE
-	fread(&count, 4, 1, fp);
-#else
 	count = File_ReadLE32(fp);
-#endif
 
 	// Load NPCs
 	memset(gNPC, 0, sizeof(gNPC));
@@ -92,16 +88,12 @@ BOOL LoadEvent(const char *path_event)
 	for (i = 0; i < count; i++)
 	{
 		// Get data from file
-#ifdef NONPORTABLE
-		fread(&eve, sizeof(EVENT), 1, fp);
-#else
 		eve.x = File_ReadLE16(fp);
 		eve.y = File_ReadLE16(fp);
 		eve.code_flag = File_ReadLE16(fp);
 		eve.code_event = File_ReadLE16(fp);
 		eve.code_char = File_ReadLE16(fp);
 		eve.bits = File_ReadLE16(fp);
-#endif
 
 		// Set NPC parameters
 		gNPC[n].direct = (eve.bits & NPC_SPAWN_IN_OTHER_DIRECTION) ? 2 : 0;
diff --git a/src/NpcTbl.cpp b/src/NpcTbl.cpp
index 56a46349..ba1a8192 100644
--- a/src/NpcTbl.cpp
+++ b/src/NpcTbl.cpp
@@ -37,28 +37,6 @@ BOOL LoadNpcTable(const char *path)
 		return FALSE;
 	}
 
-#ifdef NONPORTABLE
-	for (n = 0; n < num; n++) // bits
-		fread(&gNpcTable[n].bits, 2, 1, fp);
-	for (n = 0; n < num; n++) // life
-		fread(&gNpcTable[n].life, 2, 1, fp);
-	for (n = 0; n < num; n++) // surf
-		fread(&gNpcTable[n].surf, 1, 1, fp);
-	for (n = 0; n < num; n++) // destroy_voice
-		fread(&gNpcTable[n].destroy_voice, 1, 1, fp);
-	for (n = 0; n < num; n++) // hit_voice
-		fread(&gNpcTable[n].hit_voice, 1, 1, fp);
-	for (n = 0; n < num; n++) // size
-		fread(&gNpcTable[n].size, 1, 1, fp);
-	for (n = 0; n < num; n++) // exp
-		fread(&gNpcTable[n].exp, 4, 1, fp);
-	for (n = 0; n < num; n++) // damage
-		fread(&gNpcTable[n].damage, 4, 1, fp);
-	for (n = 0; n < num; n++) // hit
-		fread(&gNpcTable[n].hit, 4, 1, fp);
-	for (n = 0; n < num; n++) // view
-		fread(&gNpcTable[n].view, 4, 1, fp);
-#else
 	for (n = 0; n < num; n++) // bits
 		gNpcTable[n].bits = File_ReadLE16(fp);
 	for (n = 0; n < num; n++) // life
@@ -79,7 +57,6 @@ BOOL LoadNpcTable(const char *path)
 		fread(&gNpcTable[n].hit, 4, 1, fp);
 	for (n = 0; n < num; n++) // view
 		fread(&gNpcTable[n].view, 4, 1, fp);
-#endif
 
 	fclose(fp);
 	return TRUE;
diff --git a/src/Profile.cpp b/src/Profile.cpp
index 0ea76be6..ebdc7566 100644
--- a/src/Profile.cpp
+++ b/src/Profile.cpp
@@ -80,9 +80,6 @@ BOOL SaveProfile(const char *name)
 	memcpy(profile.flags, gFlagNPC, sizeof(profile.flags));
 
 	// Write to file
-#ifdef NONPORTABLE
-	fwrite(&profile, sizeof(PROFILE), 1, fp);
-#else
 	fwrite(profile.code, 8, 1, fp);
 	File_WriteLE32(profile.stage, fp);
 	File_WriteLE32(profile.music, fp);
@@ -116,7 +113,6 @@ BOOL SaveProfile(const char *name)
 	fwrite(profile.permit_mapping, 0x80, 1, fp);
 	fwrite(FLAG, 4, 1, fp);
 	fwrite(profile.flags, 1000, 1, fp);
-#endif
 
 	fclose(fp);
 	return TRUE;
@@ -152,9 +148,6 @@ BOOL LoadProfile(const char *name)
 	// Read data
 	fseek(fp, 0, SEEK_SET);
 	memset(&profile, 0, sizeof(PROFILE));
-#ifdef NONPORTABLE
-	fread(&profile, sizeof(PROFILE), 1, fp);
-#else
 	fread(profile.code, 8, 1, fp);
 	profile.stage = File_ReadLE32(fp);
 	profile.music = (MusicID)File_ReadLE32(fp);
@@ -188,7 +181,6 @@ BOOL LoadProfile(const char *name)
 	fread(profile.permit_mapping, 0x80, 1, fp);
 	fread(profile.FLAG, 4, 1, fp);
 	fread(profile.flags, 1000, 1, fp);
-#endif
 	fclose(fp);
 
 	// Set things
diff --git a/src/Resource.cpp b/src/Resource.cpp
index 332aef71..95921cd5 100644
--- a/src/Resource.cpp
+++ b/src/Resource.cpp
@@ -82,11 +82,7 @@ static const struct
 	{"ORG", "BALLOS", rBallos, sizeof(rBallos)},
 	{"ORG", "BDOWN", rBreakDown, sizeof(rBreakDown)},
 	{"ORG", "CEMETERY", rCemetery, sizeof(rCemetery)},
-#ifdef NONPORTABLE
-	{"ORG", "Curly", rCurly, sizeof(rCurly)},
-#else
 	{"ORG", "CURLY", rCurly, sizeof(rCurly)},
-#endif
 	{"ORG", "DR", rDr, sizeof(rDr)},
 	{"ORG", "ENDING", rEnding, sizeof(rEnding)},
 	{"ORG", "ESCAPE", rEscape, sizeof(rEscape)},
diff --git a/src/Stage.cpp b/src/Stage.cpp
index 29ab34e0..794764c4 100644
--- a/src/Stage.cpp
+++ b/src/Stage.cpp
@@ -224,11 +224,7 @@ const char *gMusicTable[42] =
 	"ACCESS",
 	"IRONH",
 	"GRAND",
-#ifdef NONPORTABLE
-	"Curly",	// The vanilla game used the original filename instead of the internal 8.3 one
-#else
 	"CURLY",
-#endif
 	"OSIDE",
 	"REQUIEM",
 	"WANPAK2",
diff --git a/src/TextScr.cpp b/src/TextScr.cpp
index 57832186..beb8f534 100644
--- a/src/TextScr.cpp
+++ b/src/TextScr.cpp
@@ -1263,20 +1263,11 @@ int TextScriptProc()
 					{
 						char str_0[0x40];
 						#ifdef JAPANESE
-							#if defined(NONPORTABLE) && defined(WINDOWS)
-								sprintf(str_0, "\x95\x73\x96\xBE\x82\xCC\x83\x52\x81\x5B\x83\x68:<%c%c%c", gTS.data[gTS.p_read + 1], gTS.data[gTS.p_read + 2], gTS.data[gTS.p_read + 3]);
-								MessageBoxA(NULL, str_0, "\x83\x47\x83\x89\x81\x5B", MB_OK);
-							#else
-								sprintf(str_0, "不明のコード:<%c%c%c", gTS.data[gTS.p_read + 1], gTS.data[gTS.p_read + 2], gTS.data[gTS.p_read + 3]);
-								SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "エラー", str_0, NULL);
-							#endif
+						sprintf(str_0, "不明のコード:<%c%c%c", gTS.data[gTS.p_read + 1], gTS.data[gTS.p_read + 2], gTS.data[gTS.p_read + 3]);
+						SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "エラー", str_0, NULL);
 						#else
-							sprintf(str_0, "Unknown code:<%c%c%c", gTS.data[gTS.p_read + 1], gTS.data[gTS.p_read + 2], gTS.data[gTS.p_read + 3]);
-							#if defined(NONPORTABLE) && defined(WINDOWS)
-								MessageBoxA(NULL, str_0, "Error", MB_OK);
-							#else
-								SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", str_0, NULL);
-							#endif
+						sprintf(str_0, "Unknown code:<%c%c%c", gTS.data[gTS.p_read + 1], gTS.data[gTS.p_read + 2], gTS.data[gTS.p_read + 3]);
+						SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", str_0, NULL);
 						#endif
 
 						return 0;
diff --git a/src/WindowsWrapper.h b/src/WindowsWrapper.h
index 53a7af55..0cf8fee3 100644
--- a/src/WindowsWrapper.h
+++ b/src/WindowsWrapper.h
@@ -1,13 +1,5 @@
 #pragma once
-/*
-#ifdef WINDOWS
-#include <windows.h>
-// Avoid name collisions
-#undef DrawText
-#undef FindResource
-#undef CreateWindow
-#else
-*/
+
 #include <stdio.h>
 
 typedef int HWND;
@@ -32,7 +24,6 @@ struct RECT
 	long right;
 	long bottom;
 };
-//#endif
 
 #define SET_RECT(rect, l, t, r, b) \
 	rect.left = l; \