--- a/homebrew-appbundle-gtk4-dmg.sh
+++ b/homebrew-appbundle-gtk4_sdl3-dmg.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Freeciv - Copyright (C) 2022-2023 - Freeciv team
+# Freeciv - Copyright (C) 2022-2026 - Freeciv team
 #  This program is free software; you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
 #  the Free Software Foundation; either version 2, or (at your option)
@@ -11,14 +11,18 @@
 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #  GNU General Public License for more details.
 
-# Variant of homebrew-appbundle.sh: GTK4 client only, libraries bundled
-# inside the package. Output: dist/Freeciv.app, dist/Freeciv Server.app and
-# dist/Freeciv-<version>.dmg
+# Variant of homebrew-appbundle.sh: GTK4 and SDL3 clients, libraries bundled
+# inside the packages. Output in dist/:
+#   Freeciv.app                  GTK4 client
+#   Freeciv [SDL3].app           SDL3 client
+#   Freeciv Server.app           Terminal launcher for the server from Freeciv.app
+#   Freeciv-GTK4-<version>.dmg   Freeciv.app and Freeciv Server.app
+#   Freeciv-SDL3-<version>.dmg   Freeciv [SDL3].app and Freeciv Server.app
 #
 # Required:
 #   brew install dylibbundler meson ninja pkg-config gettext icu4c \
 #     readline sqlite curl xz zstd gtk4 librsvg adwaita-icon-theme lua@5.4 \
-#     sdl3 sdl3_mixer gdk-pixbuf
+#     sdl3 sdl3_image sdl3_ttf sdl3_mixer gdk-pixbuf
 #
 # Work from the top-level source directory, regardless of where the
 # script was started from
@@ -42,7 +46,7 @@
 CONTENTSDIR="${APPDIR}/Contents"
 
 # Clean start (changing the configuration requires a fresh build directory)
-rm -rf "${DISTDIR}" build
+rm -rf "${DISTDIR}" build build-sdl3
 
 if ! mkdir -p "${CONTENTSDIR}/Resources" "${CONTENTSDIR}/MacOS" ; then
   echo "Failed to create \"${CONTENTSDIR}\"" >&2
@@ -211,10 +215,140 @@
   echo "${LEFT}" >&2
 fi
 
+# === Freeciv [SDL3].app ===================================================
+
+SDLAPP="${DISTDIR}/Freeciv [SDL3].app"
+SDLCONTENTS="${SDLAPP}/Contents"
+
+if ! mkdir -p "${SDLCONTENTS}/Resources" "${SDLCONTENTS}/MacOS" ; then
+  echo "Failed to create \"${SDLCONTENTS}\"" >&2
+  exit 1
+fi
+
+if ! cp data/freeciv-client.icns "${SDLCONTENTS}/Resources/" ; then
+  echo "Failed to copy file \"freeciv-client.icns\"" >&2
+  exit 1
+fi
+
+# Info.plist - the executable is a launcher script that sets up the environment
+cat > "${SDLCONTENTS}/Info.plist" <<EOF
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleName</key>
+	<string>Freeciv [SDL3]</string>
+	<key>CFBundleIdentifier</key>
+	<string>freeciv.sdl3</string>
+	<key>CFBundleVersion</key>
+	<string>${VSTRING}</string>
+	<key>CFBundleShortVersionString</key>
+	<string>${VSTRING}</string>
+	<key>CFBundleExecutable</key>
+	<string>Freeciv</string>
+	<key>CFBundleIconFile</key>
+	<string>freeciv-client.icns</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
+</dict>
+</plist>
+EOF
+
+if ! echo -n "APPL????" > "${SDLCONTENTS}/PkgInfo" ; then
+  echo "Failed to create file \"${SDLCONTENTS}/PkgInfo\"" >&2
+  exit 1
+fi
+
+# Launcher: points the game to data and locale files inside the bundle
+cat > "${SDLCONTENTS}/MacOS/Freeciv" <<'EOF'
+#!/bin/bash
+CONTENTS="$(cd "$(dirname "$0")/.." && pwd)"
+
+export FREECIV_DATA_PATH="$CONTENTS/share/freeciv"
+export FREECIV_LOCALE_PATH="$CONTENTS/share/locale"
+export PATH="$CONTENTS/bin:$PATH"
+
+exec "$CONTENTS/bin/freeciv-sdl3" "$@"
+EOF
+chmod +x "${SDLCONTENTS}/MacOS/Freeciv"
+
+mkdir build-sdl3 || { echo "Failed to create build directory" >&2; exit 1; }
+
+cd build-sdl3 || exit 1
+
+if ! meson setup .. \
+       -Dtools=manual,ruleup \
+       -Dsyslua=true \
+       -Ddebug=false \
+       -Dclients=sdl3 \
+       -Dfcmp=cli \
+       -Daudio=sdl3 \
+       -Dfollowtag=macos \
+       -Ddefault_library=static \
+       -Dprefix="${SDLCONTENTS}" ||
+   ! ninja ||
+   ! ninja install
+then
+  echo "Build failed!" >&2
+  exit 1
+fi
+
+cd .. || exit 1
+
+chmod -R u+w "${SDLCONTENTS}"
+
+# Bundling libraries
+
+SDLMACHO=()
+while IFS= read -r F ; do
+  if file -b "$F" | grep -q 'Mach-O' ; then
+    SDLMACHO+=("$F")
+  fi
+done < <(find "${SDLCONTENTS}/bin" "${SDLCONTENTS}/lib" -type f 2>/dev/null)
+
+SDLARGS=()
+for F in "${SDLMACHO[@]}" ; do
+  SDLARGS+=(-x "$F")
+done
+
+if ! dylibbundler -od -b -cd "${SDLARGS[@]}" \
+       -d "${SDLCONTENTS}/Frameworks/" \
+       -p "@executable_path/../Frameworks/" \
+       -s "${BREW}/lib" ; then
+  echo "dylibbundler failed!" >&2
+  exit 1
+fi
+
+# Ad-hoc code signing (required on Apple Silicon)
+
+while IFS= read -r F ; do
+  if file -b "$F" | grep -q 'Mach-O' ; then
+    codesign --force -s - "$F"
+  fi
+done < <(find "${SDLCONTENTS}/Frameworks" "${SDLCONTENTS}/bin" "${SDLCONTENTS}/lib" -type f 2>/dev/null)
+
+codesign --force --deep -s - "${SDLAPP}"
+
+# Sanity check: nothing should reference /opt/homebrew any more
+LEFT=$(find "${SDLCONTENTS}/bin" "${SDLCONTENTS}/Frameworks" "${SDLCONTENTS}/lib" -type f -exec sh -c \
+  'file -b "$1" | grep -q Mach-O && otool -L "$1" | grep -H --label="$1" "/opt/homebrew"' _ {} \; 2>/dev/null)
+if [ -n "${LEFT}" ] ; then
+  echo "Warning: references to /opt/homebrew remain in ${SDLAPP}:" >&2
+  echo "${LEFT}" >&2
+fi
+
 # --- Freeciv Server.app -----------------------------------------------------
 # A separate small bundle, so that the server gets its own icon in Launchpad.
-# It contains no binaries: it opens freeciv-server from Freeciv.app (next to
-# it, or in /Applications) in a Terminal window.
+# It contains no binaries: it opens freeciv-server from Freeciv.app or
+# Freeciv [SDL3].app (next to it, or in /Applications) in a Terminal window.
 
 SERVERAPP="${DISTDIR}/Freeciv Server.app"
 SERVERCONTENTS="${SERVERAPP}/Contents"
@@ -268,13 +402,15 @@
 EOF
 chmod +x "${SERVERCONTENTS}/MacOS/FreecivServer"
 
-# Script run inside Terminal: finds Freeciv.app and starts the server
+# Script run inside Terminal: finds Freeciv.app or Freeciv [SDL3].app and starts the server
 cat > "${SERVERCONTENTS}/Resources/freeciv-server.command" <<'EOF'
 #!/bin/bash
-# Locate Freeciv.app: next to this Freeciv Server.app first, then in /Applications
+# Locate Freeciv.app or Freeciv [SDL3].app: next to this Freeciv Server.app
+# first, then in /Applications
 SELF="$(cd "$(dirname "$0")/../../.." && pwd)"
 APP=""
-for CAND in "$SELF/Freeciv.app" "/Applications/Freeciv.app" ; do
+for CAND in "$SELF/Freeciv.app" "$SELF/Freeciv [SDL3].app" \
+            "/Applications/Freeciv.app" "/Applications/Freeciv [SDL3].app" ; do
   if [ -x "$CAND/Contents/bin/freeciv-server" ] ; then
     APP="$CAND"
     break
@@ -282,7 +418,7 @@
 done
 
 if [ -z "$APP" ] ; then
-  echo "Freeciv.app not found next to Freeciv Server.app or in /Applications."
+  echo "Freeciv.app or Freeciv [SDL3].app not found next to Freeciv Server.app or in /Applications."
   echo "Press Enter to close."
   read -r
   exit 1
@@ -299,12 +435,14 @@
 # --- DMG ------------------------------------------------------------------
 
 STAGE="${DISTDIR}/dmg-stage"
+
+# GTK4: Freeciv.app and Freeciv Server.app
 mkdir -p "${STAGE}"
 cp -R "${APPDIR}" "${STAGE}/"
 cp -R "${SERVERAPP}" "${STAGE}/"
 ln -s /Applications "${STAGE}/Applications"
 
-DMG="${DISTDIR}/Freeciv-${VSTRING}.dmg"
+DMG="${DISTDIR}/Freeciv-GTK4-${VSTRING}.dmg"
 rm -f "${DMG}"
 # hdiutil create is deprecated in macOS 27 in favour of diskutil image;
 # fall back to hdiutil on older systems that lack "diskutil image"
@@ -317,4 +455,22 @@
 fi
 rm -rf "${STAGE}"
 
+# SDL3: Freeciv [SDL3].app and Freeciv Server.app
+mkdir -p "${STAGE}"
+cp -R "${SDLAPP}" "${STAGE}/"
+cp -R "${SERVERAPP}" "${STAGE}/"
+ln -s /Applications "${STAGE}/Applications"
+
+SDLDMG="${DISTDIR}/Freeciv-SDL3-${VSTRING}.dmg"
+rm -f "${SDLDMG}"
+if ! diskutil image create from --format UDZO \
+       --volumeName "Freeciv [SDL3] ${VSTRING}" "${STAGE}" "${SDLDMG}" &&
+   ! hdiutil create -volname "Freeciv [SDL3] ${VSTRING}" -srcfolder "${STAGE}" \
+       -ov -format UDZO "${SDLDMG}" ; then
+  echo "Failed to create DMG" >&2
+  exit 1
+fi
+rm -rf "${STAGE}"
+
 echo "Done: ${DMG}"
+echo "Done: ${SDLDMG}"