chmod +x "Game.app"/Contents/MacOS/Game

codesign --force --sign "3rd Party Mac Developer Application: YOUR DEVELOPER NAME (YOUR ID)" --options runtime --deep --timestamp --entitlements entitlements.plist "Game.app"

productbuild --component "Game.app" /Applications --sign "3rd Party Mac Developer Installer: YOUR DEVELOPER NAME (YOUR ID)" Game.pkg

sudo installer -store -pkg Game.pkg -target /