diff --git a/res/melon.plist.in b/res/melon.plist.in
index 4c87eb97..3cfa3970 100644
--- a/res/melon.plist.in
+++ b/res/melon.plist.in
@@ -39,6 +39,10 @@
                 <string>srl</string>
                 <string>dsi</string>
                 <string>ids</string>
+                <string>nds.zst</string>
+                <string>srl.zst</string>
+                <string>dsi.zst</string>
+                <string>ids.zst</string>
             </array>
             <key>CFBundleTypeRole</key>
             <string>Viewer</string>
@@ -50,6 +54,8 @@
             <array>
                 <string>gba</string>
                 <string>agb</string>
+                <string>gba.zst</string>
+                <string>agb.zst</string>
             </array>
             <key>CFBundleTypeRole</key>
             <string>Viewer</string>
diff --git a/src/frontend/qt_sdl/CMakeLists.txt b/src/frontend/qt_sdl/CMakeLists.txt
index 0387c58e..63bf53ee 100644
--- a/src/frontend/qt_sdl/CMakeLists.txt
+++ b/src/frontend/qt_sdl/CMakeLists.txt
@@ -83,6 +83,9 @@ pkg_check_modules(SDL2 REQUIRED IMPORTED_TARGET sdl2)
 pkg_check_modules(Slirp REQUIRED IMPORTED_TARGET slirp)
 pkg_check_modules(LibArchive REQUIRED IMPORTED_TARGET libarchive)
 
+find_package(zstd CONFIG)
+cmake_dependent_option(ENABLE_ZSTD "Enable support for Zstandard-compressed ROMs" ON "zstd_FOUND" OFF)
+
 fix_interface_includes(PkgConfig::SDL2 PkgConfig::Slirp PkgConfig::LibArchive)
 
 add_compile_definitions(ARCHIVE_SUPPORT_ENABLED)
@@ -157,6 +160,15 @@ target_link_libraries(melonDS PRIVATE core)
 target_link_libraries(melonDS PRIVATE PkgConfig::SDL2 PkgConfig::Slirp PkgConfig::LibArchive)
 target_link_libraries(melonDS PRIVATE ${QT_LINK_LIBS} ${CMAKE_DL_LIBS})
 
+if (ENABLE_ZSTD)
+    target_compile_definitions(melonDS PRIVATE ZSTD_ENABLED)
+    if (BUILD_STATIC)
+        target_link_libraries(melonDS PRIVATE zstd::libzstd_static)
+    else()
+        target_link_libraries(melonDS PRIVATE zstd::libzstd_shared)
+    endif()
+endif()
+
 if (UNIX)
     option(PORTABLE "Make a portable build that looks for its configuration in the current directory" OFF)
 elseif (WIN32)
diff --git a/src/frontend/qt_sdl/ROMManager.cpp b/src/frontend/qt_sdl/ROMManager.cpp
index ac525b74..967566a1 100644
--- a/src/frontend/qt_sdl/ROMManager.cpp
+++ b/src/frontend/qt_sdl/ROMManager.cpp
@@ -21,6 +21,7 @@
 
 #include <string>
 #include <utility>
+#include <zstd.h>
 
 #ifdef ARCHIVE_SUPPORT_ENABLED
 #include "ArchiveUtil.h"
@@ -478,6 +479,27 @@ bool LoadBIOS()
     return true;
 }
 
+u32 DecompressROM(const u8* inContent, const u32 inSize, u8** outContent)
+{
+    u64 realSize = ZSTD_getFrameContentSize(inContent, inSize);
+
+    if (realSize == ZSTD_CONTENTSIZE_UNKNOWN || realSize == ZSTD_CONTENTSIZE_ERROR || realSize > 0x40000000)
+    {
+        return 0;
+    }
+
+    u8* realContent = new u8[realSize];
+    u64 decompressed = ZSTD_decompress(realContent, realSize, inContent, inSize);
+
+    if (ZSTD_isError(decompressed))
+    {
+        delete[] realContent;
+        return 0;
+    }
+
+    *outContent = realContent;
+    return realSize;
+}
 
 bool LoadROM(QStringList filepath, bool reset)
 {
@@ -520,6 +542,27 @@ bool LoadROM(QStringList filepath, bool reset)
         fclose(f);
         filelen = (u32)len;
 
+#if ZSTD_ENABLED
+        if (filename.length() > 4 && filename.substr(filename.length() - 4) == ".zst")
+        {
+            u8* outContent = nullptr;
+            u32 decompressed = DecompressROM(filedata, len, &outContent);
+
+            if (decompressed > 0)
+            {
+                delete[] filedata;
+                filedata = outContent;
+                filelen = decompressed;
+                filename = filename.substr(0, filename.length() - 4);
+            }
+            else
+            {
+                delete[] filedata;
+                return false;
+            }
+        }
+#endif
+
         int pos = LastSep(filename);
         if(pos != -1)
             basepath = filename.substr(0, pos);
@@ -530,14 +573,14 @@ bool LoadROM(QStringList filepath, bool reset)
     {
         // file inside archive
 
-            s32 lenread = Archive::ExtractFileFromArchive(filepath.at(0), filepath.at(1), &filedata, &filelen);
-            if (lenread < 0) return false;
-            if (!filedata) return false;
-            if (lenread != filelen)
-            {
-                delete[] filedata;
-                return false;
-            }
+        s32 lenread = Archive::ExtractFileFromArchive(filepath.at(0), filepath.at(1), &filedata, &filelen);
+        if (lenread < 0) return false;
+        if (!filedata) return false;
+        if (lenread != filelen)
+        {
+            delete[] filedata;
+            return false;
+        }
 
         std::string std_archivepath = filepath.at(0).toStdString();
         basepath = std_archivepath.substr(0, LastSep(std_archivepath));
@@ -682,6 +725,27 @@ bool LoadGBAROM(QStringList filepath)
         fclose(f);
         filelen = (u32)len;
 
+#if ZSTD_ENABLED
+        if (filename.length() > 4 && filename.substr(filename.length() - 4) == ".zst")
+        {
+            u8* outContent = nullptr;
+            u32 decompressed = DecompressROM(filedata, len, &outContent);
+
+            if (decompressed > 0)
+            {
+                delete[] filedata;
+                filedata = outContent;
+                filelen = decompressed;
+                filename = filename.substr(0, filename.length() - 4);
+            }
+            else
+            {
+                delete[] filedata;
+                return false;
+            }
+        }
+#endif
+
         int pos = LastSep(filename);
         basepath = filename.substr(0, pos);
         romname = filename.substr(pos+1);
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index 7015c6da..b3ad0dc5 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -146,7 +146,7 @@ const QStringList ArchiveExtensions
     ".tar.lz",
     ".tar.lzma", ".tlz",
     ".tar.lrz", ".tlrz",
-    ".tar.lzo", ".tzo",
+    ".tar.lzo", ".tzo"
 #endif
 };
 
@@ -1568,9 +1568,26 @@ static bool SupportedArchiveByMimetype(const QMimeType& mimetype)
     return MimeTypeInList(mimetype, ArchiveMimeTypes);
 }
 
+#ifdef ZSTD_ENABLED
+static bool ZstdNdsRomByExtension(const QString& filename)
+{
+    if (filename.endsWith(".zst", Qt::CaseInsensitive))
+        return NdsRomByExtension(filename.left(filename.size() - 4));
+}
+
+static bool ZstdGbaRomByExtension(const QString& filename)
+{
+    if (filename.endsWith(".zst", Qt::CaseInsensitive))
+        return GbaRomByExtension(filename.left(filename.size() - 4));
+}
+#endif
 
 static bool FileIsSupportedFiletype(const QString& filename, bool insideArchive = false)
 {
+#ifdef ZSTD_ENABLED
+    if (ZstdNdsRomByExtension(filename) || ZstdGbaRomByExtension(filename))
+        return true;
+#endif
     if (NdsRomByExtension(filename) || GbaRomByExtension(filename) || SupportedArchiveByExtension(filename))
         return true;
 
@@ -2207,7 +2224,14 @@ void MainWindow::dropEvent(QDropEvent* event)
     const auto matchMode = romInsideArchive ? QMimeDatabase::MatchExtension : QMimeDatabase::MatchDefault;
     const QMimeType mimetype = QMimeDatabase().mimeTypeForFile(filename, matchMode);
 
-    if (NdsRomByExtension(filename) || NdsRomByMimetype(mimetype))
+    bool isNdsRom = NdsRomByExtension(filename) || NdsRomByMimetype(mimetype);
+    bool isGbaRom = GbaRomByExtension(filename) || GbaRomByMimetype(mimetype);
+#ifdef ZSTD_ENABLED
+    isNdsRom |= ZstdNdsRomByExtension(filename);
+    isGbaRom |= ZstdGbaRomByExtension(filename);
+#endif
+
+    if (isNdsRom)
     {
         if (!ROMManager::LoadROM(file, true))
         {
@@ -2227,7 +2251,7 @@ void MainWindow::dropEvent(QDropEvent* event)
 
         updateCartInserted(false);
     }
-    else if (GbaRomByExtension(filename) || GbaRomByMimetype(mimetype))
+    else if (isGbaRom)
     {
         if (!ROMManager::LoadGBAROM(file))
         {
@@ -2452,14 +2476,26 @@ QStringList MainWindow::pickROM(bool gba)
     const QString console = gba ? "GBA" : "DS";
     const QStringList& romexts = gba ? GbaRomExtensions : NdsRomExtensions;
 
-    static const QString filterSuffix = ArchiveExtensions.empty()
-        ? ");;Any file (*.*)"
-        : " *" + ArchiveExtensions.join(" *") + ");;Any file (*.*)";
+    QString rawROMs = romexts.join(" *");
+    QString extraFilters = ";;" + console + " ROMs (*" + rawROMs;
+    QString allROMs = rawROMs;
+
+#ifdef ZSTD_ENABLED
+    QString zstdROMs = "*" + romexts.join(".zst *") + ".zst";
+    extraFilters += ");;Zstandard-compressed " + console + " ROMs (" + zstdROMs + ")";
+    allROMs += " " + zstdROMs;
+#endif
+#ifdef ARCHIVE_SUPPORT_ENABLED
+    QString archives = "*" + ArchiveExtensions.join(" *");
+    extraFilters += ";;Archives (" + archives + ")";
+    allROMs += " " + archives;
+#endif
+    extraFilters += ";;All files (*.*)";
 
     const QString filename = QFileDialog::getOpenFileName(
         this, "Open " + console + " ROM",
         QString::fromStdString(Config::LastROMFolder),
-        console + " ROMs (*" + romexts.join(" *") + filterSuffix
+        "All supported files (*" + allROMs + ")" + extraFilters
     );
 
     if (filename.isEmpty()) return {};