diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0590b348..7ab30d45 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -63,6 +63,7 @@ jobs:
             ninja:p
             qt5:p
             ccache:p
+            nsis:p
 
       - name: Setup ccache
         if: runner.os != 'Windows' && inputs.build_type == 'Debug'
@@ -100,7 +101,7 @@ jobs:
         run: |
          brew update
          brew install qt@5 ninja
-         
+
       - name: Update Qt (AppImage)
         if: runner.os == 'Linux' && matrix.appimage == true
         run: |
@@ -190,6 +191,13 @@ jobs:
           cp -r ${{ env.INSTALL_DIR }} ${{ env.INSTALL_PORTABLE_DIR }}  # cmake install on Windows is slow, let's just copy instead
           cmake --install ${{ env.BUILD_DIR }} --prefix ${{ env.INSTALL_PORTABLE_DIR }} --component portable
 
+      - name: Package (Windows, installer)
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
+        run: |
+          cd ${{ env.INSTALL_PORTABLE_DIR }}
+          makensis -NOCD "-DVERSION=${{ env.VERSION }}" "-DMUI_ICON=${{ github.workspace }}/program_info/polymc.ico" "-XOutFile ${{ github.workspace }}/PolyMC-Setup.exe" "${{ github.workspace }}/program_info/win_install.nsi"
+
       - name: Package (Linux)
         if: runner.os == 'Linux' && matrix.appimage != true
         run: |
@@ -257,6 +265,13 @@ jobs:
           name: PolyMC-${{ matrix.name }}-Portable-${{ env.VERSION }}-${{ inputs.build_type }}
           path: ${{ env.INSTALL_PORTABLE_DIR }}/**
 
+      - name: Upload installer (Windows)
+        if: runner.os == 'Windows'
+        uses: actions/upload-artifact@v3
+        with:
+          name: PolyMC-${{ matrix.name }}-${{ env.VERSION }}-${{ inputs.build_type }}-Setup
+          path: PolyMC-Setup.exe
+
       - name: Upload binary tarball (Linux)
         if: runner.os == 'Linux' && matrix.appimage != true
         uses: actions/upload-artifact@v3
diff --git a/program_info/win_install.nsi b/program_info/win_install.nsi
new file mode 100644
index 00000000..2b0d9760
--- /dev/null
+++ b/program_info/win_install.nsi
@@ -0,0 +1,169 @@
+!define MULTIUSER_EXECUTIONLEVEL Highest
+!define MULTIUSER_MUI
+!define MULTIUSER_INSTALLMODE_COMMANDLINE
+
+!define MULTIUSER_INSTALLMODE_INSTDIR PolyMC
+!define MULTIUSER_INSTALLMODE_INSTDIR_REGISTRY_KEY Software\PolyMC
+!define MULTIUSER_INSTALLMODE_INSTDIR_REGISTRY_VALUENAME InstallDir
+
+!include "FileFunc.nsh"
+!include "MUI2.nsh"
+!include "MultiUser.nsh"
+
+Name "PolyMC"
+RequestExecutionLevel highest
+
+;--------------------------------
+
+; Pages
+
+!insertmacro MUI_PAGE_WELCOME
+!insertmacro MULTIUSER_PAGE_INSTALLMODE
+!define MUI_COMPONENTSPAGE_NODESC
+!insertmacro MUI_PAGE_COMPONENTS
+!insertmacro MUI_PAGE_DIRECTORY
+!insertmacro MUI_PAGE_INSTFILES
+!define MUI_FINISHPAGE_RUN "$InstDir\polymc.exe"
+!insertmacro MUI_PAGE_FINISH
+
+!insertmacro MUI_UNPAGE_CONFIRM
+!insertmacro MUI_UNPAGE_INSTFILES
+
+!insertmacro MUI_LANGUAGE "English"
+
+;--------------------------------
+
+; The stuff to install
+Section "PolyMC"
+
+  SectionIn RO
+
+  nsExec::Exec /TIMEOUT=2000 'TaskKill /IM polymc.exe /F'
+
+  SetOutPath $INSTDIR
+
+  File "polymc.exe"
+  File "qt.conf"
+  File *.dll
+  File /r "iconengines"
+  File /r "imageformats"
+  File /r "jars"
+  File /r "platforms"
+  File /r "styles"
+
+  ; Write the installation path into the registry
+  WriteRegStr SHCTX SOFTWARE\PolyMC "InstallDir" "$INSTDIR"
+
+  ; Write the uninstall keys for Windows
+  !define UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\PolyMC"
+  WriteRegStr SHCTX "${UNINST_KEY}" "DisplayName" "PolyMC"
+  WriteRegStr SHCTX "${UNINST_KEY}" "DisplayIcon" "$INSTDIR\polymc.exe"
+  WriteRegStr SHCTX "${UNINST_KEY}" "UninstallString" '"$INSTDIR\uninstall.exe" /$MultiUser.InstallMode'
+  WriteRegStr SHCTX "${UNINST_KEY}" "QuietUninstallString" '"$INSTDIR\uninstall.exe" /$MultiUser.InstallMode /S'
+  WriteRegStr SHCTX "${UNINST_KEY}" "InstallLocation" "$INSTDIR"
+  WriteRegStr SHCTX "${UNINST_KEY}" "Publisher" "PolyMC Contributors"
+  WriteRegStr SHCTX "${UNINST_KEY}" "ProductVersion" "${VERSION}"
+  ${GetSize} "$INSTDIR" "/S=0K" $0 $1 $2
+  IntFmt $0 "0x%08X" $0
+  WriteRegDWORD SHCTX "${UNINST_KEY}" "EstimatedSize" "$0"
+  WriteRegDWORD SHCTX "${UNINST_KEY}" "NoModify" 1
+  WriteRegDWORD SHCTX "${UNINST_KEY}" "NoRepair" 1
+  WriteUninstaller "$INSTDIR\uninstall.exe"
+
+SectionEnd
+
+Section "Start Menu Shortcuts"
+
+  CreateShortcut "$SMPROGRAMS\PolyMC.lnk" "$INSTDIR\polymc.exe" "" "$INSTDIR\polymc.exe" 0
+
+SectionEnd
+
+Section /o "Portable"
+
+  SetOutPath $INSTDIR
+  File "portable.txt"
+
+SectionEnd
+
+;--------------------------------
+
+; Uninstaller
+
+Section "Uninstall"
+
+  nsExec::Exec /TIMEOUT=2000 'TaskKill /IM polymc.exe /F'
+
+  DeleteRegKey SHCTX "Software\Microsoft\Windows\CurrentVersion\Uninstall\PolyMC"
+  DeleteRegKey SHCTX SOFTWARE\PolyMC
+
+  Delete $INSTDIR\polymc.exe
+  Delete $INSTDIR\uninstall.exe
+  Delete $INSTDIR\portable.txt
+
+  Delete $INSTDIR\libbrotlicommon.dll
+  Delete $INSTDIR\libbrotlidec.dll
+  Delete $INSTDIR\libbz2-1.dll
+  Delete $INSTDIR\libcrypto-1_1-x64.dll
+  Delete $INSTDIR\libcrypto-1_1.dll
+  Delete $INSTDIR\libdouble-conversion.dll
+  Delete $INSTDIR\libfreetype-6.dll
+  Delete $INSTDIR\libgcc_s_seh-1.dll
+  Delete $INSTDIR\libgcc_s_dw2-1.dll
+  Delete $INSTDIR\libglib-2.0-0.dll
+  Delete $INSTDIR\libgraphite2.dll
+  Delete $INSTDIR\libharfbuzz-0.dll
+  Delete $INSTDIR\libiconv-2.dll
+  Delete $INSTDIR\libicudt69.dll
+  Delete $INSTDIR\libicuin69.dll
+  Delete $INSTDIR\libicuuc69.dll
+  Delete $INSTDIR\libintl-8.dll
+  Delete $INSTDIR\libjasper-4.dll
+  Delete $INSTDIR\libjpeg-8.dll
+  Delete $INSTDIR\libmd4c.dll
+  Delete $INSTDIR\libpcre-1.dll
+  Delete $INSTDIR\libpcre2-16-0.dll
+  Delete $INSTDIR\libpng16-16.dll
+  Delete $INSTDIR\libssl-1_1-x64.dll
+  Delete $INSTDIR\libssl-1_1.dll
+  Delete $INSTDIR\libssp-0.dll
+  Delete $INSTDIR\libstdc++-6.dll
+  Delete $INSTDIR\libwebp-7.dll
+  Delete $INSTDIR\libwebpdemux-2.dll
+  Delete $INSTDIR\libwebpmux-3.dll
+  Delete $INSTDIR\libwinpthread-1.dll
+  Delete $INSTDIR\libzstd.dll
+  Delete $INSTDIR\Qt5Core.dll
+  Delete $INSTDIR\Qt5Gui.dll
+  Delete $INSTDIR\Qt5Network.dll
+  Delete $INSTDIR\Qt5Qml.dll
+  Delete $INSTDIR\Qt5QmlModels.dll
+  Delete $INSTDIR\Qt5Quick.dll
+  Delete $INSTDIR\Qt5Svg.dll
+  Delete $INSTDIR\Qt5WebSockets.dll
+  Delete $INSTDIR\Qt5Widgets.dll
+  Delete $INSTDIR\Qt5Xml.dll
+  Delete $INSTDIR\zlib1.dll
+
+  Delete $INSTDIR\qt.conf
+
+  RMDir /r $INSTDIR\iconengines
+  RMDir /r $INSTDIR\imageformats
+  RMDir /r $INSTDIR\jars
+  RMDir /r $INSTDIR\platforms
+  RMDir /r $INSTDIR\styles
+
+  Delete "$SMPROGRAMS\PolyMC.lnk"
+
+  RMDir "$INSTDIR"
+
+SectionEnd
+
+; Multi-user
+
+Function .onInit
+  !insertmacro MULTIUSER_INIT
+FunctionEnd
+
+Function un.onInit
+  !insertmacro MULTIUSER_UNINIT
+FunctionEnd