diff --git a/os/windows/winstore/set-version.ps1 b/os/windows/winstore/set-version.ps1
new file mode 100644
--- /dev/null
+++ b/os/windows/winstore/set-version.ps1
@@ -0,0 +1,23 @@
+[CmdletBinding()]
+[Alias()]
+Param
+(
+    # EXE path
+    [Parameter(Mandatory=$true, Position=0)]
+    $ExePath
+)
+
+try
+{
+    $versionInfo = (Get-Item "$ExePath").VersionInfo
+
+    # Generate the app version - the build number (MS calls it revision) is always 0 because the Windows Store requires that
+    $AppVersion = "$($versionInfo.FileMajorPart).$($versionInfo.FileMinorPart).$($versionInfo.FileBuildPart).0"
+
+    Write-Output "SET OTTD_VERSION=$($AppVersion)"
+}
+catch
+{
+    Write-Output "@ECHO Error retrieving EXE version - did you provide a path?"
+    exit 1
+}