it seems according to a comment in this link, there have existed windows ports but, are/were unstable.
i wish there was a windows port, i like "galaxy" screen saver also there is another in e style of galaxy but, it's worm hole. it would be nice to use the same screen save on each of my OSes on my triple boot.
is x screensavers open source? if so aren't there programers and maintainers here on OCN? maybe some one could port it to windows.