diff --git a/binding-sandbox/meson.build b/binding-sandbox/meson.build
index c8774726..cb6d22c0 100644
--- a/binding-sandbox/meson.build
+++ b/binding-sandbox/meson.build
@@ -1,8 +1,8 @@
-global_sources += files([
+global_sources += files(
     'binding-base.cpp',
     'binding-util.cpp',
     'module_rpg.cpp',
     'sandbox.cpp',
     'wasi.cpp',
     'wasm-rt.cpp',
-])
+)
diff --git a/src/audio/alstream.cpp b/src/audio/alstream.cpp
index 10600903..ede8272c 100644
--- a/src/audio/alstream.cpp
+++ b/src/audio/alstream.cpp
@@ -242,11 +242,7 @@ struct ALStreamOpenHandler : FileSystem::OpenHandler
 
 			if (!strcmp(sig, "MThd"))
 			{
-#ifdef MKXPZ_RETRO
-				shState->midiState().initIfNeeded();
-#else
 				shState->midiState().initIfNeeded(shState->config());
-#endif // MKXPZ_RETRO
 
 				if (HAVE_FLUID)
 				{
diff --git a/src/audio/audio.cpp b/src/audio/audio.cpp
index 17726d1d..97e78330 100644
--- a/src/audio/audio.cpp
+++ b/src/audio/audio.cpp
@@ -31,7 +31,9 @@
 #include <string>
 #include <vector>
 
-#ifndef MKXPZ_RETRO
+#ifdef MKXPZ_RETRO
+#  include "graphics.h"
+#else
 #  include "sdl-util.h"
 #  include <SDL_thread.h>
 #  include <SDL_timer.h>
@@ -74,24 +76,16 @@ struct AudioPrivate
 		MeWatchState state;
 	} meWatch;
 
-#ifdef MKXPZ_RETRO
-	AudioPrivate()
-#else
 	AudioPrivate(RGSSThreadData &rtData)
-#endif // MKXPZ_RETRO
 	    : bgs(ALStream::Looped, "bgs"),
 	      me(ALStream::NotLooped, "me"),
-#ifndef MKXPZ_RETRO
 	      se(rtData.config),
+#ifndef MKXPZ_RETRO
 	      syncPoint(rtData.syncPoint),
 #endif // MKXPZ_RETRO
           volumeRatio(1)
 	{
-#ifdef MKXPZ_RETRO
-        for (int i = 0; i < 16; i++) { // TODO: read BGM track count from config
-#else
         for (int i = 0; i < rtData.config.BGM.trackCount; i++) {
-#endif // MKXPZ_RETRO
             std::string id = std::string("bgm" + std::to_string(i));
             bgmTracks.push_back(new AudioStream(ALStream::Looped, id.c_str()));
         }
@@ -123,9 +117,10 @@ struct AudioPrivate
 
 	void meWatchProc()
 	{
-#ifdef MKXPZ_RETRO // TODO: use FPS
-		const float fadeOutStep = 1.f / (200  / 17);
-		const float fadeInStep  = 1.f / (1000 / 17);
+#ifdef MKXPZ_RETRO
+		const int fps = shState->graphics().getFrameRate();
+		const float fadeOutStep = 5.f / fps;
+		const float fadeInStep  = 1.f / fps;
 #else
 		const float fadeOutStep = 1.f / (200  / AUDIO_SLEEP);
 		const float fadeInStep  = 1.f / (1000 / AUDIO_SLEEP);
@@ -316,15 +311,9 @@ struct AudioPrivate
 #endif // MKXPZ_RETRO
 };
 
-#ifdef MKXPZ_RETRO
-Audio::Audio()
-	: p(new AudioPrivate())
-{}
-#else
 Audio::Audio(RGSSThreadData &rtData)
 	: p(new AudioPrivate(rtData))
 {}
-#endif // MKXPZ_RETRO
 
 #ifdef MKXPZ_RETRO
 void Audio::render() {
diff --git a/src/audio/audio.h b/src/audio/audio.h
index 63786a59..8c6237e9 100644
--- a/src/audio/audio.h
+++ b/src/audio/audio.h
@@ -77,15 +77,13 @@ public:
 
 	void reset();
 
-#ifdef MKXPZ_RETRO
-	Audio();
-	~Audio();
-#endif // MKXPZ_RETRO
-
-private:
 #ifndef MKXPZ_RETRO
+private:
+#endif // MKXPZ_RETRO
 	Audio(RGSSThreadData &rtData);
 	~Audio();
+#ifdef MKXPZ_RETRO
+private:
 #endif // MKXPZ_RETRO
 
 	friend struct SharedStatePrivate;
diff --git a/src/audio/sharedmidistate.h b/src/audio/sharedmidistate.h
index c420c5cb..aac7bc5f 100644
--- a/src/audio/sharedmidistate.h
+++ b/src/audio/sharedmidistate.h
@@ -78,7 +78,7 @@ struct SharedMidiState
 	}
 
 #ifdef MKXPZ_RETRO
-	void initIfNeeded()
+	void initIfNeeded(const Config &conf)
 	{
 		if (inited)
 			return;
@@ -93,8 +93,8 @@ struct SharedMidiState
 		flSettings = fluid.new_settings();
 		fluid.settings_setnum(flSettings, "synth.gain", 1.0f);
 		fluid.settings_setnum(flSettings, "synth.sample-rate", SYNTH_SAMPLERATE);
-		fluid.settings_setint(flSettings, "synth.chorus.active", 0);
-		fluid.settings_setint(flSettings, "synth.reverb.active", 0);
+		fluid.settings_setint(flSettings, "synth.chorus.active", conf.midi.chorus);
+		fluid.settings_setint(flSettings, "synth.reverb.active", conf.midi.reverb);
 
 		extern const uint8_t mkxp_gmgsx_sf2[];
 		extern const size_t mkxp_gmgsx_sf2_len;
diff --git a/src/audio/soundemitter.cpp b/src/audio/soundemitter.cpp
index 67c187ad..4bedae81 100644
--- a/src/audio/soundemitter.cpp
+++ b/src/audio/soundemitter.cpp
@@ -94,17 +94,9 @@ arrayPushBack(std::vector<size_t> &array, size_t size, size_t index)
 	array[size-1] = v;
 }
 
-#ifdef MKXPZ_RETRO
-SoundEmitter::SoundEmitter()
-#else
 SoundEmitter::SoundEmitter(const Config &conf)
-#endif // MKXPZ_RETRO
     : bufferBytes(0),
-#ifdef MKXPZ_RETRO
-      srcCount(6), // TODO: get from config
-#else
       srcCount(conf.SE.sourceCount),
-#endif // MKXPZ_RETRO
       alSrcs(srcCount),
       atchBufs(srcCount),
       srcPrio(srcCount)
diff --git a/src/audio/soundemitter.h b/src/audio/soundemitter.h
index dd6a64b3..0a834231 100644
--- a/src/audio/soundemitter.h
+++ b/src/audio/soundemitter.h
@@ -49,11 +49,7 @@ struct SoundEmitter
 	/* Indices of sources, sorted by priority (lowest first) */
 	std::vector<size_t> srcPrio;
 
-#ifdef MKXPZ_RETRO
-	SoundEmitter();
-#else
 	SoundEmitter(const Config &conf);
-#endif // MKXPZ_RETRO
 	~SoundEmitter();
 
 	void play(const std::string &filename,
diff --git a/src/config.cpp b/src/config.cpp
index cdd7a295..e6376a38 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -6,7 +6,11 @@
 //
 
 #include "config.h"
-#include <SDL_filesystem.h>
+#ifdef MKXPZ_RETRO
+#  include "core.h"
+#else
+#  include <SDL_filesystem.h>
+#endif // MKXPZ_RETRO
 #include <assert.h>
 
 #include <stdint.h>
@@ -28,7 +32,8 @@
 
 namespace json = json5pp;
 
-std::string prefPath(const char *org, const char *app) {
+#ifndef MKXPZ_RETRO
+static std::string prefPath(const char *org, const char *app) {
     char *path = SDL_GetPrefPath(org, app);
     if (!path)
         return std::string("");
@@ -36,8 +41,9 @@ std::string prefPath(const char *org, const char *app) {
     SDL_free(path);
     return ret;
 }
+#endif // MKXPZ_RETRO
 
-void fillStringVec(json::value &item, std::vector<std::string> &vector) {
+static void fillStringVec(json::value &item, std::vector<std::string> &vector) {
     if (!item.is_array()) {
         if (item.is_string()) {
             vector.push_back(item.as_string());
@@ -53,7 +59,7 @@ void fillStringVec(json::value &item, std::vector<std::string> &vector) {
     }
 }
 
-bool copyObject(json::value &dest, json::value &src, const char *objectName = "") {
+static bool copyObject(json::value &dest, json::value &src, const char *objectName = "") {
     assert(dest.is_object());
     if (src.is_null())
         return false;
@@ -84,7 +90,8 @@ bool copyObject(json::value &dest, json::value &src, const char *objectName = ""
     return true;
 }
 
-bool getEnvironmentBool(const char *env, bool defaultValue) {
+#ifndef MKXPZ_RETRO
+static bool getEnvironmentBool(const char *env, bool defaultValue) {
     const char *e = SDL_getenv(env);
     if (!e)
         return defaultValue;
@@ -96,16 +103,40 @@ bool getEnvironmentBool(const char *env, bool defaultValue) {
     
     return defaultValue;
 }
+#endif // MKXPZ_RETRO
 
-json::value readConfFile(const char *path) {
+static json::value readConfFile(const char *path) {
     
     json::value ret(0);
-    if (!mkxp_fs::fileExists(path)) {
+
+#ifdef MKXPZ_RETRO
+    FileSystem::File file(*mkxp_retro::fs, path, FileSystem::OpenMode::Read);
+    if (!file.is_open())
+#else
+    if (!mkxp_fs::fileExists(path))
+#endif // MKXPZ_RETRO
+    {
         return json::object({});
     }
     
     try {
+#ifdef MKXPZ_RETRO
+        std::vector<uint8_t> buf(16);
+        size_t size = 0;
+        for (;;) {
+            PHYSFS_sint64 n = PHYSFS_readBytes(file.get(), buf.data() + size, buf.size() - size);
+            if (n <= 0) {
+                break;
+            }
+            size += n;
+            if (size >= buf.size()) {
+                buf.resize(buf.size() * 2);
+            }
+        }
+        std::string cfg(buf.begin(), buf.begin() + size);
+#else
         std::string cfg = mkxp_fs::contentsOfFileAsString(path);
+#endif // MKXPZ_RETRO
         ret = json::parse5(Encoding::convertString(cfg));
     }
     catch (const std::exception &e) {
@@ -121,7 +152,12 @@ json::value readConfFile(const char *path) {
     return ret;
 }
 
-#define CONF_FILE "mkxp.json"
+#define _CONF_FILE "mkxp.json"
+#ifdef MKXPZ_RETRO
+#  define CONF_FILE "/mkxp-retro-game/" _CONF_FILE
+#else
+#  define CONF_FILE _CONF_FILE
+#endif // MKXPZ_RETRO
 
 Config::Config() {}
 
@@ -254,17 +290,21 @@ try { exp } catch (...) {}
     SET_OPT(defScreenW, integer);
     SET_OPT(defScreenH, integer);
     
+#ifndef MKXPZ_RETRO
     // Take a break real quick and witch to set game folder and read the game's ini
     if (!gameFolder.empty() && !mkxp_fs::setCurrentDirectory(gameFolder.c_str())) {
         throw Exception(Exception::MKXPError, "Unable to switch into gameFolder %s", gameFolder.c_str());
     }
+#endif // MKXPZ_RETRO
     
     readGameINI();
     
+#ifndef MKXPZ_RETRO
     // Now check for an extra mkxp.conf in the user's save directory and merge anything else from that
     userConfPath = mkxp_fs::normalizePath(std::string(customDataPath + "/" CONF_FILE).c_str(), 0, 1);
     json::value userConf = readConfFile(userConfPath.c_str());
     copyObject(optsJ, userConf);
+#endif // MKXPZ_RETRO
     
     // now RESUME
     
@@ -342,8 +382,10 @@ try { exp } catch (...) {}
     SE.sourceCount = clamp(SE.sourceCount, 1, 64);
     BGM.trackCount = clamp(BGM.trackCount, 1, 16);
     
+#ifndef MKXPZ_RETRO
     // Determine whether to open a console window on... Windows
     winConsole = getEnvironmentBool("MKXPZ_WINDOWS_CONSOLE", editor.debug);
+#endif // MKXPZ_RETRO
     
 #ifdef __APPLE__
     // Determine whether to use the Metal renderer on macOS
@@ -351,11 +393,13 @@ try { exp } catch (...) {}
     preferMetalRenderer = isMetalSupported() && getEnvironmentBool("MKXPZ_MACOS_METAL", preferMetalRenderer);
 #endif
     
+#ifndef MKXPZ_RETRO
     // Determine whether to allow manual selection of a game folder on startup
     // Only works on macOS atm, mainly used to test games located outside of the bundle.
     // The config is re-read after the window is already created, so some entries
     // may not take effect
     manualFolderSelect = getEnvironmentBool("MKXPZ_FOLDER_SELECT", false);
+#endif // MKXPZ_RETRO
     
     raw = optsJ;
 }
@@ -387,14 +431,29 @@ void Config::readGameINI() {
         return;
     }
     
+#ifdef MKXPZ_RETRO
+    std::string iniFileName("/mkxp-retro-game/" + execName + ".ini");
+    std::shared_ptr<FileSystem::File> iniFile(new FileSystem::File(*mkxp_retro::fs, iniFileName.c_str(), FileSystem::OpenMode::Read));
+#else
     std::string iniFileName(execName + ".ini");
     SDLRWStream iniFile(iniFileName.c_str(), "r");
+#endif // MKXPZ_RETRO
     
     bool convSuccess = false;
+#ifdef MKXPZ_RETRO
+    if (iniFile->is_open())
+#else
     if (iniFile)
+#endif // MKXPZ_RETRO
     {
         INIConfiguration ic;
+#ifdef MKXPZ_RETRO
+        PHYSFSRWBuf buf(iniFile);
+        std::istream stream(&buf);
+        if (ic.load(stream))
+#else
         if (ic.load(iniFile.stream()))
+#endif // MKXPZ_RETRO
         {
             GUARD(game.title = ic.getStringProperty("Game", "Title"););
             GUARD(game.scripts = ic.getStringProperty("Game", "Scripts"););
@@ -429,7 +488,9 @@ void Config::readGameINI() {
     if (dataPathApp.empty())
         dataPathApp = game.title;
     
+#ifndef MKXPZ_RETRO
     customDataPath = mkxp_fs::normalizePath(prefPath(dataPathOrg.c_str(), dataPathApp.c_str()).c_str(), 0, 1);
+#endif // MKXPZ_RETRO
     
     if (rgssVersion == 0) {
         /* Try to guess RGSS version based on Data/Scripts extension */
diff --git a/src/config.h b/src/config.h
index b3e0cae3..bd627df6 100644
--- a/src/config.h
+++ b/src/config.h
@@ -35,7 +35,9 @@ struct Config {
     int rgssVersion;
     
     bool debugMode;
+#ifndef MKXPZ_RETRO
     bool winConsole;
+#endif // MKXPZ_RETRO
     bool preferMetalRenderer;
     bool displayFPS;
     bool printFPS;
@@ -78,7 +80,9 @@ struct Config {
     } integerScaling;
     
     std::string gameFolder;
+#ifndef MKXPZ_RETRO
     bool manualFolderSelect;
+#endif // MKXPZ_RETRO
     
     bool anyAltToggleFS;
     bool enableReset;
@@ -165,7 +169,9 @@ struct Config {
     std::string userConfPath;
     
     /* Internal */
+#ifndef MKXPZ_RETRO
     std::string customDataPath;
+#endif // MKXPZ_RETRO
     
     Config();
     
diff --git a/src/core.cpp b/src/core.cpp
index 0bbd5ed4..29fa2b59 100644
--- a/src/core.cpp
+++ b/src/core.cpp
@@ -37,6 +37,7 @@
 #include "gl-fun.h"
 #include "glstate.h"
 #include "sharedmidistate.h"
+#include "eventthread.h"
 
 using namespace mkxp_retro;
 using namespace mkxp_sandbox;
@@ -59,6 +60,7 @@ static int16_t *sound_buf = NULL;
 static bool retro_framebuffer_supported;
 static bool shared_state_initialized;
 static PHYSFS_File *rgssad = NULL;
+static retro_system_av_info av_info;
 
 namespace mkxp_retro {
     retro_log_printf_t log_printf;
@@ -107,6 +109,8 @@ boost::optional<struct sandbox> mkxp_retro::sandbox;
 boost::optional<Audio> mkxp_retro::audio;
 boost::optional<Input> mkxp_retro::input;
 boost::optional<FileSystem> mkxp_retro::fs;
+static boost::optional<Config> conf;
+static boost::optional<RGSSThreadData> thread_data;
 static std::string game_path;
 
 static VALUE func(VALUE arg) {
@@ -165,6 +169,8 @@ static void deinit_sandbox() {
         PHYSFS_close(rgssad);
         rgssad = NULL;
     }
+    thread_data.reset();
+    conf.reset();
     fs.reset();
     input.reset();
 }
@@ -201,13 +207,16 @@ static bool init_sandbox() {
 
         fs->addPath(parsed_game_path.c_str(), "/mkxp-retro-game");
 
-        // TODO: use execName from config instead of hardcoding "Game" as the filename
-        if ((rgssad = PHYSFS_openRead("/mkxp-retro-game/Game.rgssad")) != NULL) {
-            PHYSFS_mountHandle(rgssad, "Game.rgssad", "/mkxp-retro-game", 1);
-        } else if ((rgssad = PHYSFS_openRead("/mkxp-retro-game/Game.rgss2a")) != NULL) {
-            PHYSFS_mountHandle(rgssad, "Game.rgss2a", "/mkxp-retro-game", 1);
-        } else if ((rgssad = PHYSFS_openRead("/mkxp-retro-game/Game.rgss3a")) != NULL) {
-            PHYSFS_mountHandle(rgssad, "Game.rgss3a", "/mkxp-retro-game", 1);
+        conf.emplace();
+        conf->read(0, NULL);
+        thread_data.emplace((EventThread *)NULL, (const char *)NULL, (SDL_Window *)NULL, (ALCdevice *)NULL, 60, 1, *conf);
+
+        if ((rgssad = PHYSFS_openRead(("/mkxp-retro-game/" + conf->execName + ".rgssad").c_str())) != NULL) {
+            PHYSFS_mountHandle(rgssad, (conf->execName + ".rgssad").c_str(), "/mkxp-retro-game", 1);
+        } else if ((rgssad = PHYSFS_openRead(("/mkxp-retro-game/" + conf->execName + ".rgss2a").c_str())) != NULL) {
+            PHYSFS_mountHandle(rgssad, (conf->execName + ".rgss2a").c_str(), "/mkxp-retro-game", 1);
+        } else if ((rgssad = PHYSFS_openRead(("/mkxp-retro-game/" + conf->execName + ".rgss3a").c_str())) != NULL) {
+            PHYSFS_mountHandle(rgssad, (conf->execName + ".rgss3a").c_str(), "/mkxp-retro-game", 1);
         }
 
         PHYSFS_mountMemory(mkxp_retro_dist_zip, mkxp_retro_dist_zip_len, NULL, "mkxp-retro-dist.zip", "/mkxp-retro-dist", 1);
@@ -254,7 +263,7 @@ static bool init_sandbox() {
     fluid_set_log_function(FLUID_INFO, fluid_log, NULL);
     fluid_set_log_function(FLUID_DBG, fluid_log, NULL);
 
-    audio.emplace();
+    audio.emplace(*thread_data);
 
     try {
         mkxp_retro::sandbox.emplace();
@@ -264,6 +273,16 @@ static bool init_sandbox() {
         return false;
     }
 
+    int default_width = conf->rgssVersion == 1 ? 640 : 544;
+    int default_height = conf->rgssVersion == 1 ? 480 : 544;
+    av_info.geometry.base_width = conf->enableHires ? (int)lround(conf->framebufferScalingFactor * default_width) : default_width;
+    av_info.geometry.base_height = conf->enableHires ? (int)lround(conf->framebufferScalingFactor * default_height) : default_height;
+    av_info.geometry.max_width = av_info.geometry.base_width;
+    av_info.geometry.max_height = av_info.geometry.base_height;
+    av_info.geometry.aspect_ratio = (float)av_info.geometry.base_width / (float)av_info.geometry.base_height;
+    av_info.timing.fps = conf->rgssVersion == 1 ? 40.0 : 60.0;
+    av_info.timing.sample_rate = (double)SYNTH_SAMPLERATE;
+
     sound_buf = NULL;
     frame_rate = 0;
     frame_rate_remainder = 0;
@@ -346,18 +365,7 @@ extern "C" RETRO_API void retro_get_system_info(struct retro_system_info *info)
 }
 
 extern "C" RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info) {
-    std::memset(info, 0, sizeof *info);
-    info->timing = {
-        .fps = 40.0,
-        .sample_rate = (double)SYNTH_SAMPLERATE,
-    };
-    info->geometry = {
-        .base_width = 640,
-        .base_height = 480,
-        .max_width = 640,
-        .max_height = 480,
-        .aspect_ratio = 640.0f / 480.0f,
-    };
+    *info = av_info;
 }
 
 extern "C" RETRO_API void retro_set_controller_port_device(unsigned int port, unsigned int device) {
@@ -373,7 +381,7 @@ extern "C" RETRO_API void retro_run() {
 
     // We deferred initializing the shared state since the OpenGL symbols aren't available until the first call to `retro_run()`
     if (!shared_state_initialized) {
-        SharedState::initInstance(NULL);
+        SharedState::initInstance(&thread_data.get());
         shared_state_initialized = true;
     } else if (hw_render.context_type != RETRO_HW_CONTEXT_NONE) {
         glState.reset();
@@ -391,37 +399,22 @@ extern "C" RETRO_API void retro_run() {
         }
     }
 
-    if (mkxp_retro::sandbox.has_value()) {
-        // Update frame rate if needed
-        if (frame_rate != shState->graphics().getFrameRate()) {
-            frame_rate = shState->graphics().getFrameRate();
-            frame_rate_remainder %= frame_rate;
-            samples_per_frame = SYNTH_SAMPLERATE / frame_rate;
-            samples_per_frame_remainder = SYNTH_SAMPLERATE % frame_rate;
+    if (mkxp_retro::sandbox.has_value() && frame_rate != shState->graphics().getFrameRate()) {
+        frame_rate = shState->graphics().getFrameRate();
+        frame_rate_remainder %= frame_rate;
+        samples_per_frame = SYNTH_SAMPLERATE / frame_rate;
+        samples_per_frame_remainder = SYNTH_SAMPLERATE % frame_rate;
 
-            if (sound_buf != NULL) {
-                mkxp_aligned_free(sound_buf);
-            }
-            sound_buf = (int16_t *)mkxp_aligned_malloc(16, (samples_per_frame + !!samples_per_frame_remainder) * 2 * sizeof(int16_t));
-            if (sound_buf == NULL) {
-                throw std::bad_alloc();
-            }
-
-            struct retro_system_av_info info;
-            std::memset(&info, 0, sizeof info);
-            info.timing = {
-                .fps = (double)frame_rate,
-                .sample_rate = (double)SYNTH_SAMPLERATE,
-            };
-            info.geometry = {
-                .base_width = 640,
-                .base_height = 480,
-                .max_width = 640,
-                .max_height = 480,
-                .aspect_ratio = 640.0f / 480.0f,
-            };
-            environment(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &info);
+        if (sound_buf != NULL) {
+            mkxp_aligned_free(sound_buf);
         }
+        sound_buf = (int16_t *)mkxp_aligned_malloc(16, (samples_per_frame + !!samples_per_frame_remainder) * 2 * sizeof(int16_t));
+        if (sound_buf == NULL) {
+            throw std::bad_alloc();
+        }
+
+        av_info.timing.fps = frame_rate;
+        environment(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
     }
 
     void *fb;
@@ -447,7 +440,9 @@ extern "C" RETRO_API void retro_run() {
             fb = frame_buf;
         }
     }
-    video_refresh(fb, 640, 480, 640 * 4);
+    unsigned int width = shState->graphics().width();
+    unsigned int height = shState->graphics().height();
+    video_refresh(fb, width, height, width * 4);
 
     if (mkxp_retro::sandbox.has_value()) {
         audio->render();
diff --git a/src/display/bitmap.cpp b/src/display/bitmap.cpp
index dcabe722..0334613b 100644
--- a/src/display/bitmap.cpp
+++ b/src/display/bitmap.cpp
@@ -1237,11 +1237,7 @@ void Bitmap::stretchBlt(IntRect destRect,
         if (srcSurf)
         {
             SDL_Rect srcRect = sourceRect;
-#ifdef MKXPZ_RETRO
-            bool subImageFix = false; // TODO: get from config
-#else
             bool subImageFix = shState->config().subImageFix;
-#endif // MKXPZ_RETRO
             bool srcRectTooBig = srcRect.w > glState.caps.maxTexSize ||
                                  srcRect.h > glState.caps.maxTexSize;
             bool srcSurfTooBig = !unpack_subimage && (
@@ -1843,7 +1839,10 @@ Color Bitmap::getPixel(int x, int y) const
     }
     
 #ifdef MKXPZ_RETRO
-    return Color(); // TODO: implement
+    return Color(((uint8_t *)p->surface->pixels)[4 * (p->surface->w * y + x)],
+                 ((uint8_t *)p->surface->pixels)[4 * (p->surface->w * y + x) + 1],
+                 ((uint8_t *)p->surface->pixels)[4 * (p->surface->w * y + x) + 2],
+                 ((uint8_t *)p->surface->pixels)[4 * (p->surface->w * y + x) + 3]);
 #else
     uint32_t pixel = getPixelAt(p->surface, p->format, x, y);
     
@@ -2686,11 +2685,7 @@ int Bitmap::addFrame(Bitmap &source, int position)
         p->animation.startTime = 0;
         
         if (p->animation.fps <= 0)
-#ifdef MKXPZ_RETRO // TODO: use actual FPS
-            p->animation.fps = 60.0;
-#else
             p->animation.fps = shState->graphics().getFrameRate();
-#endif // MKXPZ_RETRO
         
         p->animation.frames.push_back(p->gl);
         
diff --git a/src/display/font.cpp b/src/display/font.cpp
index 64c272e2..5677576d 100644
--- a/src/display/font.cpp
+++ b/src/display/font.cpp
@@ -624,11 +624,7 @@ void Font::initDefaults(const SharedFontState &sfs)
 	std::vector<std::string> &names = FontPrivate::initialDefaultNames;
 	names.clear();
 
-#ifdef MKXPZ_RETRO // TODO: get from config
-	switch (1)
-#else
 	switch (rgssVer)
-#endif // MKXPZ_RETRO
 	{
 	case 1 :
 		// FIXME: Japanese version has "MS PGothic" instead
@@ -648,13 +644,8 @@ void Font::initDefaults(const SharedFontState &sfs)
 
 	setDefaultName(names, sfs);
 
-#ifdef MKXPZ_RETRO // TODO: get from config
-	FontPrivate::defaultOutline = false;
-	FontPrivate::defaultShadow  = false;
-#else
 	FontPrivate::defaultOutline = (rgssVer >= 3 ? true : false);
 	FontPrivate::defaultShadow  = (rgssVer == 2 ? true : false);
-#endif // MKXPZ_RETRO
 }
 
 #ifdef MKXPZ_RETRO
diff --git a/src/display/gl/gl-meta.cpp b/src/display/gl/gl-meta.cpp
index 884b1c57..32a4a914 100644
--- a/src/display/gl/gl-meta.cpp
+++ b/src/display/gl/gl-meta.cpp
@@ -195,18 +195,10 @@ int smoothScalingMethod(int scaleIsSpecial)
 	case SameScale:
 		return NearestNeighbor;
 	case DownScale:
-#ifdef MKXPZ_RETRO
-		return 0; // TODO: get from config
-#else
 		return shState->config().smoothScalingDown;
-#endif // MKXPZ_RETRO
 	}
 
-#ifdef MKXPZ_RETRO
-	return 0; // TODO: get from config
-#else
 	return shState->config().smoothScaling;
-#endif // MKXPZ_RETRO
 }
 
 static void _blitBegin(FBO::ID fbo, const Vec2i &size, int scaleIsSpecial)
diff --git a/src/display/gl/gl-util.h b/src/display/gl/gl-util.h
index 02addc23..c7f24c1d 100644
--- a/src/display/gl/gl-util.h
+++ b/src/display/gl/gl-util.h
@@ -104,16 +104,12 @@ namespace TEX
 
 	static inline void setSmooth(bool mode)
 	{
-#ifndef MKXPZ_RETRO // TODO: get from config
 		if (mode && shState->config().smoothScalingMipmaps) {
 			gl.GenerateMipmap(GL_TEXTURE_2D);
 			gl.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
 		} else {
-#endif // MKXPZ_RETRO
 			gl.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, mode ? GL_LINEAR : GL_NEAREST);
-#ifndef MKXPZ_RETRO
 		}
-#endif // MKXPZ_RETRO
 
 		gl.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mode ? GL_LINEAR : GL_NEAREST);
 	}
diff --git a/src/display/gl/glstate.cpp b/src/display/gl/glstate.cpp
index 7ab14d4e..ae0b05e1 100644
--- a/src/display/gl/glstate.cpp
+++ b/src/display/gl/glstate.cpp
@@ -127,19 +127,12 @@ void GLState::reset() {
   blendMode.init(BlendNormal);
   blend.init(true);
   scissorTest.init(false);
-#ifdef MKXPZ_RETRO
-  scissorBox.init(IntRect(0, 0, 640, 480)); // TODO: get from config
-  viewport.init(IntRect(0, 0, 640, 480));
-#else
   scissorBox.init(IntRect(0, 0, conf.defScreenW, conf.defScreenH));
   viewport.init(IntRect(0, 0, conf.defScreenW, conf.defScreenH));
-#endif // MKXPZ_RETRO
   program.init(0);
 
   gl.ActiveTexture(GL_TEXTURE0);
 
-#ifndef MKXPZ_RETRO // TODO
   if (conf.maxTextureSize > 0)
     caps.maxTexSize = conf.maxTextureSize;
-#endif // MKXPZ_RETRO
 }
diff --git a/src/display/graphics.cpp b/src/display/graphics.cpp
index 25866e26..04489c33 100644
--- a/src/display/graphics.cpp
+++ b/src/display/graphics.cpp
@@ -70,17 +70,10 @@
 #include <climits>
 
 
-#ifdef MKXPZ_RETRO
-#  define DEF_SCREEN_W 640
-#  define DEF_SCREEN_H 480
+#define DEF_SCREEN_W (rgssVer == 1 ? 640 : 544)
+#define DEF_SCREEN_H (rgssVer == 1 ? 480 : 416)
 
-#  define DEF_FRAMERATE 40
-#else
-#  define DEF_SCREEN_W (rgssVer == 1 ? 640 : 544)
-#  define DEF_SCREEN_H (rgssVer == 1 ? 480 : 416)
-
-#  define DEF_FRAMERATE (rgssVer == 1 ? 40 : 60)
-#endif // MKXPZ_RETRO
+#define DEF_FRAMERATE (rgssVer == 1 ? 40 : 60)
 
 #define DEF_MAX_VIDEO_FRAMES 30
 #define VIDEO_DELAY 10
@@ -859,18 +852,10 @@ struct GraphicsPrivate {
     
     GraphicsPrivate(RGSSThreadData *rtData)
     : scResLores(DEF_SCREEN_W, DEF_SCREEN_H),
-#ifdef MKXPZ_RETRO
-    scRes(DEF_SCREEN_W, DEF_SCREEN_H), // TODO: get from config
-#else
     scRes(rtData->config.enableHires ? (int)lround(rtData->config.framebufferScalingFactor * DEF_SCREEN_W) : DEF_SCREEN_W,
         rtData->config.enableHires ? (int)lround(rtData->config.framebufferScalingFactor * DEF_SCREEN_H) : DEF_SCREEN_H),
-#endif // MKXPZ_RETRO
     scSize(scRes),
-#ifdef MKXPZ_RETRO
-    winSize(640, 480), // TODO: use actual screen size
-#else
     winSize(rtData->config.defScreenW, rtData->config.defScreenH),
-#endif // MKXPZ_RETRO
     screen(scRes.x, scRes.y), threadData(rtData),
 #ifndef MKXPZ_RETRO
     glCtx(SDL_GL_GetCurrentContext()),
@@ -880,11 +865,7 @@ struct GraphicsPrivate {
 #ifndef MKXPZ_RETRO
     fpsLimiter(frameRate),
 #endif // MKXPZ_RETRO
-#ifdef MKXPZ_RETRO
-    useFrameSkip(false), // TODO: get from config
-#else
     useFrameSkip(rtData->config.frameSkip),
-#endif // MKXPZ_RETRO
     frozen(false),
     last_update(0), last_avg_update(0), backingScaleFactor(1), integerScaleFactor(0, 0),
 #ifdef MKXPZ_RETRO
@@ -906,11 +887,7 @@ struct GraphicsPrivate {
             rebuildIntegerScaleBuffer();
         }
         
-#ifdef MKXPZ_RETRO
-        recalculateScreenSize(true); // TODO: get from config
-#else
         recalculateScreenSize(rtData->config.fixedAspectRatio);
-#endif // MKXPZ_RETRO
         updateScreenResoRatio(rtData);
         
         TEXFBO::init(frozenScene);
@@ -1575,7 +1552,7 @@ int Graphics::displayContentHeight() const {
 
 int Graphics::displayWidth() const {
 #ifdef MKXPZ_RETRO
-    return 640; // TODO: use actual width
+    return Graphics::displayContentWidth();
 #else
     SDL_DisplayMode dm{};
     SDL_GetCurrentDisplayMode(SDL_GetWindowDisplayIndex(shState->sdlWindow()), &dm);
@@ -1585,7 +1562,7 @@ int Graphics::displayWidth() const {
 
 int Graphics::displayHeight() const {
 #ifdef MKXPZ_RETRO
-    return 480; // TODO: use actual height
+    return Graphics::displayContentHeight();
 #else
     SDL_DisplayMode dm{};
     SDL_GetCurrentDisplayMode(SDL_GetWindowDisplayIndex(shState->sdlWindow()), &dm);
@@ -1794,11 +1771,7 @@ bool Graphics::getFixedAspectRatio() const
 {
     // It's a bit hacky to expose config values as a Graphics
     // attribute, but there's really no point in state duplication
-#ifdef MKXPZ_RETRO
-    return true; // TODO: get from config
-#else
     return shState->config().fixedAspectRatio;
-#endif // MKXPZ_RETRO
 }
 
 void Graphics::setFixedAspectRatio(bool value)
@@ -1815,11 +1788,7 @@ void Graphics::setFixedAspectRatio(bool value)
 int Graphics::getSmoothScaling() const
 {
     // Same deal as with fixed aspect ratio
-#ifdef MKXPZ_RETRO
-    return 0; // TODO: get from config
-#else
     return shState->config().smoothScaling;
-#endif // MKXPZ_RETRO
 }
 
 void Graphics::setSmoothScaling(int value)
diff --git a/src/display/sprite.cpp b/src/display/sprite.cpp
index abbdd1b5..c139a5ba 100644
--- a/src/display/sprite.cpp
+++ b/src/display/sprite.cpp
@@ -632,11 +632,7 @@ void Sprite::draw()
     int sourceWidthHires = p->bitmap->hasHires() ? p->bitmap->getHires()->width() : p->bitmap->width();
     int sourceHeightHires = p->bitmap->hasHires() ? p->bitmap->getHires()->height() : p->bitmap->height();
 
-#ifdef MKXPZ_RETRO
-    double framebufferScalingFactor = 1.0; // TODO: get from config
-#else
     double framebufferScalingFactor = shState->config().enableHires ? shState->config().framebufferScalingFactor : 1.0;
-#endif // MKXPZ_RETRO
 
     int targetWidthHires = (int)lround(framebufferScalingFactor * p->bitmap->width() * p->trans.getScale().x);
     int targetHeightHires = (int)lround(framebufferScalingFactor * p->bitmap->height() * p->trans.getScale().y);
@@ -747,11 +743,7 @@ void Sprite::draw()
             shader.bind();
 
             shader.setTexSize(Vec2i(sourceWidthHires, sourceHeightHires));
-#ifdef MKXPZ_RETRO
-            shader.setSharpness(100); // TODO: get from config
-#else
             shader.setSharpness(shState->config().bicubicSharpness);
-#endif // MKXPZ_RETRO
             shader.setSpriteMat(p->trans.getMatrix());
             shader.applyViewportProj();
             base = &shader;
@@ -775,11 +767,7 @@ void Sprite::draw()
             shader.bind();
 
             shader.setTexSize(Vec2i(sourceWidthHires, sourceHeightHires));
-#ifdef MKXPZ_RETRO
-            shader.setTargetScale(Vec2(1.0f, 1.0f)); // TODO: get from config
-#else
             shader.setTargetScale(Vec2((float)(shState->config().xbrzScalingFactor), (float)(shState->config().xbrzScalingFactor)));
-#endif // MKXPZ_RETRO
             shader.setSpriteMat(p->trans.getMatrix());
             shader.applyViewportProj();
             base = &shader;
diff --git a/src/display/tilemap.cpp b/src/display/tilemap.cpp
index 04c1709a..ee833c1b 100644
--- a/src/display/tilemap.cpp
+++ b/src/display/tilemap.cpp
@@ -605,11 +605,7 @@ struct TilemapPrivate
 			/* Mega surface tileset */
 			SDL_Surface *tsSurf = tileset->megaSurface();
 
-#ifdef MKXPZ_RETRO
-			if (false) // TODO: get from config
-#else
 			if (shState->config().subImageFix)
-#endif // MKXPZ_RETRO
 			{
 				/* Implementation for broken GL drivers */
 				FBO::bind(atlas.gl.fbo);
diff --git a/src/display/viewport.cpp b/src/display/viewport.cpp
index 705d18e4..d8bd75f9 100644
--- a/src/display/viewport.cpp
+++ b/src/display/viewport.cpp
@@ -111,12 +111,8 @@ Viewport::Viewport()
     : SceneElement(*shState->screen()),
       sceneLink(this)
 {
-#ifdef MKXPZ_RETRO
-	initViewport(0, 0, 640, 480); // TODO: use the actual viewport size
-#else
 	const Graphics &graphics = shState->graphics();
 	initViewport(0, 0, graphics.width(), graphics.height());
-#endif // MKXPZ_RETRO
 }
 
 void Viewport::initViewport(int x, int y, int width, int height)
diff --git a/src/filesystem/filesystem.h b/src/filesystem/filesystem.h
index b98e4145..5728d10a 100644
--- a/src/filesystem/filesystem.h
+++ b/src/filesystem/filesystem.h
@@ -88,6 +88,9 @@ public:
 		inline PHYSFS_File &operator*() {
 			return *get();
 		}
+		inline bool is_open() {
+			return inner != NULL;
+		}
 	};
 
 	FileSystem(const char *argv0,
diff --git a/src/input/input-retro.cpp b/src/input/input-retro.cpp
index 3a1282c8..d9e0836c 100644
--- a/src/input/input-retro.cpp
+++ b/src/input/input-retro.cpp
@@ -21,12 +21,13 @@
 
 #include "input.h"
 #include "core.h"
+#include "sharedstate.h"
+#include "graphics.h"
 
 #define JOYPAD_BUTTON_MAX 16
 #define REPEAT_NONE 255
-#define REPEAT_START 0.4 // TODO: should be 0.375 when RGSS version >= 2
+#define REPEAT_START (rgssVer >= 2 ? 0.375 : 0.400)
 #define REPEAT_DELAY 0.1
-#define FPS 60.0 // TODO: use the actual FPS
 
 static std::unordered_map<int, uint8_t> codeToJoypadId = {
     {Input::Down, RETRO_DEVICE_ID_JOYPAD_DOWN},
@@ -233,7 +234,8 @@ bool Input::isReleased(int button)
 
 bool Input::isRepeated(int button)
 {
-    return p->isRepeat(button) && (p->repeatCount == 0 || (p->repeatCount >= (size_t)std::ceil(REPEAT_START * FPS) && (p->repeatCount + 1) % (size_t)std::ceil(REPEAT_DELAY * FPS) == 0));
+    int frame_rate = shState->graphics().getFrameRate();
+    return p->isRepeat(button) && (p->repeatCount == 0 || (p->repeatCount >= (size_t)std::ceil(REPEAT_START * frame_rate) && (p->repeatCount + 1) % (size_t)std::ceil(REPEAT_DELAY * frame_rate) == 0));
 }
 
 unsigned int Input::count(int button)
@@ -243,7 +245,7 @@ unsigned int Input::count(int button)
 
 double Input::repeatTime(int button)
 {
-    return p->isRepeat(button) ? (double)p->repeatCount / FPS : 0;
+    return p->isRepeat(button) ? (double)p->repeatCount / shState->graphics().getFrameRate() : 0;
 }
 
 bool Input::isPressedEx(int button, bool isVKey)
diff --git a/src/meson.build b/src/meson.build
index 02c2570b..0a4f6355 100755
--- a/src/meson.build
+++ b/src/meson.build
@@ -8,9 +8,7 @@ if is_libretro
     global_args += '-DMPG123_NO_LARGENAME'
     global_args += '-DGL_GLES_PROTOTYPES=0'
 
-    if host_system == 'darwin'
-        global_dependencies += compilers['cpp'].find_library('iconv')
-    endif
+    global_dependencies += dependency('iconv', static: core_is_static or host_system == 'windows')
 
     global_dependencies += subproject('libretro-common').get_variable('libretro_common')
 
@@ -381,7 +379,7 @@ global_include_dirs += include_directories('.',
 
 main_source = files(
     is_libretro ? 'core.cpp' : 'main.cpp',
-    is_libretro ? [] : 'config.cpp',
+    'config.cpp',
     is_libretro ? [] : 'eventthread.cpp',
     is_libretro ? [] : 'settingsmenu.cpp',
     'sharedstate.cpp',
@@ -427,7 +425,7 @@ main_source = files(
     'display/gl/tilequad.cpp',
     'display/gl/vertex.cpp',
 
-    is_libretro ? [] : 'util/iniconfig.cpp',
+    'util/iniconfig.cpp',
     is_libretro ? [] : 'util/win-consoleutils.cpp',
 
     'etc/etc.cpp',
diff --git a/src/sharedstate.cpp b/src/sharedstate.cpp
index 66593347..099e223a 100644
--- a/src/sharedstate.cpp
+++ b/src/sharedstate.cpp
@@ -77,9 +77,9 @@ struct SharedStatePrivate
 	FileSystem fileSystem;
 
 	EventThread &eThread;
+#endif // MKXPZ_RETRO
 	RGSSThreadData &rtData;
 	Config &config;
-#endif // MKXPZ_RETRO
 	SharedMidiState midiState;
 
 	Graphics graphics;
@@ -117,9 +117,9 @@ struct SharedStatePrivate
 	      sdlWindow(threadData->window),
 	      fileSystem(threadData->argv0, threadData->config.allowSymlinks),
 	      eThread(*threadData->ethread),
+#endif // MKXPZ_RETRO
 	      rtData(*threadData),
 	      config(threadData->config),
-#endif // MKXPZ_RETRO
 #ifdef MKXPZ_RETRO
               midiState(),
 #else
@@ -184,12 +184,10 @@ struct SharedStatePrivate
 		TEXFBO::allocEmpty(gpTexFBO, globalTexW, globalTexH);
 		TEXFBO::linkFBO(gpTexFBO);
 
-#ifndef MKXPZ_RETRO
 		/* RGSS3 games will call setup_midi, so there's
 		 * no need to do it on startup */
 		if (rgssVer <= 2)
 			midiState.initIfNeeded(threadData->config);
-#endif // MKXPZ_RETRO
 	}
 
 	~SharedStatePrivate()
@@ -206,9 +204,7 @@ void SharedState::initInstance(RGSSThreadData *threadData)
 	 * SharedState depends on GlobalIBO existing,
 	 * Font depends on SharedState existing */
 
-#ifndef MKXPZ_RETRO
 	rgssVersion = threadData->config.rgssVersion;
-#endif // MKXPZ_RETRO
     
 	_globalIBO = new GlobalIBO();
 	_globalIBO->ensureSize(1);
@@ -262,9 +258,9 @@ GSATT(Scene*, screen)
 #ifndef MKXPZ_RETRO
 GSATT(FileSystem&, fileSystem)
 GSATT(EventThread&, eThread)
+#endif // MKXPZ_RETRO
 GSATT(RGSSThreadData&, rtData)
 GSATT(Config&, config)
-#endif // MKXPZ_RETRO
 GSATT(Graphics&, graphics)
 #ifndef MKXPZ_RETRO
 GSATT(Input&, input)
diff --git a/src/util/sdl-util.h b/src/util/sdl-util.h
index 60035c96..cda9463f 100644
--- a/src/util/sdl-util.h
+++ b/src/util/sdl-util.h
@@ -1,7 +1,9 @@
 #ifndef SDLUTIL_H
 #define SDLUTIL_H
 
-#ifndef MKXPZ_RETRO
+#ifdef MKXPZ_RETRO
+#  include "filesystem.h"
+#else
 #  include <SDL_atomic.h>
 #  include <SDL_thread.h>
 #  include <SDL_rwops.h>
@@ -11,6 +13,48 @@
 #include <iostream>
 #include <unistd.h>
 
+template<typename O, typename R, size_t bufSize = 248, size_t pbSize = 8>
+class RWBuf : public std::streambuf
+{
+public:
+	RWBuf(O ops)
+	    : ops(ops)
+	{
+		char *end = buf + bufSize + pbSize;
+		setg(end, end, end);
+	}
+
+private:
+	int_type underflow()
+	{
+		if (!ops)
+			return traits_type::eof();
+
+		if (gptr() < egptr())
+			return traits_type::to_int_type(*gptr());
+
+		char *base = buf;
+		char *start = base;
+
+		if (eback() == base)
+		{
+			std::memmove(base, egptr() - pbSize, pbSize);
+			start += pbSize;
+		}
+
+		size_t n = R::read(ops, start, bufSize - (start - base));
+		if (n == 0)
+			return traits_type::eof();
+
+		setg(base, start, start + n);
+
+		return underflow();
+	}
+
+	O ops;
+	char buf[bufSize+pbSize];
+};
+
 #ifdef MKXPZ_RETRO
 struct AtomicFlag
 {
@@ -41,6 +85,17 @@ struct AtomicFlag
 private:
 	mutable bool atom;
 };
+
+class PHYSFSRead
+{
+public:
+	static size_t read(std::shared_ptr<struct FileSystem::File> ops, void *buf, size_t size)
+	{
+		return std::max((PHYSFS_sint64)0, PHYSFS_readBytes(ops->get(), buf, size));
+	}
+};
+
+typedef RWBuf<std::shared_ptr<struct FileSystem::File>, PHYSFSRead> PHYSFSRWBuf;
 #else
 struct AtomicFlag
 {
@@ -129,48 +184,17 @@ inline bool readFileSDL(const char *path,
 	return true;
 }
 
-template<size_t bufSize = 248, size_t pbSize = 8>
-class SDLRWBuf : public std::streambuf
+class SDLRead
 {
 public:
-	SDLRWBuf(SDL_RWops *ops)
-	    : ops(ops)
+	static size_t read(SDL_RWops *ops, void *buf, size_t size)
 	{
-		char *end = buf + bufSize + pbSize;
-		setg(end, end, end);
+		return SDL_RWread(ops, buf, 1, size);
 	}
-
-private:
-	int_type underflow()
-	{
-		if (!ops)
-			return traits_type::eof();
-
-		if (gptr() < egptr())
-			return traits_type::to_int_type(*gptr());
-
-		char *base = buf;
-		char *start = base;
-
-		if (eback() == base)
-		{
-			std::memmove(base, egptr() - pbSize, pbSize);
-			start += pbSize;
-		}
-
-		size_t n = SDL_RWread(ops, start, 1, bufSize - (start - base));
-		if (n == 0)
-			return traits_type::eof();
-
-		setg(base, start, start + n);
-
-		return underflow();
-	}
-
-	SDL_RWops *ops;
-	char buf[bufSize+pbSize];
 };
 
+typedef RWBuf<SDL_RWops *, SDLRead> SDLRWBuf;
+
 class SDLRWStream
 {
 public:
@@ -199,7 +223,7 @@ public:
 
 private:
 	SDL_RWops *ops;
-	SDLRWBuf<> buf;
+	SDLRWBuf buf;
 	std::istream s;
 };
 #endif // MKXPZ_RETRO