diff --git a/cmake/PackageNSIS.cmake b/cmake/PackageNSIS.cmake
new file mode 100644
--- /dev/null
+++ b/cmake/PackageNSIS.cmake
@@ -0,0 +1,39 @@
+set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON)
+set(CPACK_NSIS_HELP_LINK "${CPACK_PACKAGE_HOMEPAGE_URL}")
+set(CPACK_NSIS_URL_INFO_ABOUT "${CPACK_PACKAGE_HOMEPAGE_URL}")
+set(CPACK_NSIS_CONTACT "${CPACK_PACKAGE_CONTACT}")
+
+# NSIS uses this for the icon in the top left of the installer
+set(CPACK_PACKAGE_ICON "${CMAKE_SOURCE_DIR}/os/windows\\\\nsis-top.bmp")
+
+# Set other icons and bitmaps for NSIS
+set(CPACK_NSIS_MUI_ICON "${CMAKE_SOURCE_DIR}/os/windows\\\\openttd.ico")
+set(CPACK_NSIS_MUI_UNIICON "${CMAKE_SOURCE_DIR}/os/windows\\\\openttd.ico")
+set(CPACK_NSIS_MUI_WELCOMEFINISHPAGE_BITMAP "${CMAKE_SOURCE_DIR}/os/windows\\\\nsis-welcome.bmp")
+set(CPACK_NSIS_MUI_UNWELCOMEFINISHPAGE_BITMAP "${CMAKE_SOURCE_DIR}/os/windows\\\\nsis-welcome.bmp")
+
+# Use the icon of the application
+set(CPACK_NSIS_INSTALLED_ICON_NAME "openttd.exe")
+# Tell NSIS the binary will be in the root
+set(CPACK_NSIS_EXECUTABLES_DIRECTORY ".")
+
+# Add detail information on the NSIS installer executable. CPack doesn't
+# support this out of the box, so we use CPACK_NSIS_DEFINES for this.
+
+# \\\ are needed, because this value is generated in another CPack file,
+# which is used. So one \ is to escape here, the second to escape in the
+# CPack file, which we have to escape here (hence: 3 \).
+set(CPACK_NSIS_DEFINES "
+; Version Info
+Var AddWinPrePopulate
+VIProductVersion \\\"0.0.0.0\\\"
+VIAddVersionKey \\\"ProductName\\\" \\\"OpenTTD Installer for Windows\\\"
+VIAddVersionKey \\\"Comments\\\" \\\"Installs OpenTTD \\\${VERSION}\\\"
+VIAddVersionKey \\\"CompanyName\\\" \\\"OpenTTD Developers\\\"
+VIAddVersionKey \\\"FileDescription\\\" \\\"Installs OpenTTD \\\${VERSION}\\\"
+VIAddVersionKey \\\"ProductVersion\\\" \\\"\\\${VERSION}\\\"
+VIAddVersionKey \\\"InternalName\\\" \\\"InstOpenTTD\\\"
+VIAddVersionKey \\\"FileVersion\\\" \\\"0.0.0.0\\\"
+VIAddVersionKey \\\"LegalCopyright\\\" \\\" \\\"
+"
+)