Most systems that support screen blanking these days have a "password-on-wake" feature AFAIK, which should leave no practical use for screen savers in the modern era. However, none of us are here for practicality, and on that note, on to the discussion of old AD modules on modern systems!

That link above was intended to demonstrate that it is possible to take AD screen saver modules and run them in a modern wrapper. That one is Lunatic Fringe specific but demonstrates it is entirely doable, and the AD module interface is reasonably well documented and the SDK complete with examples is available.