If you miss this GOTD it's recently been on other sites, so might well appear on one of them in the near future.
What Animated Wallpaper Maker does is use FX built into lots of graphics hardware, but it's also stuff that was more widespread some years back -- game developers for instance have moved beyond it a long time ago. That means a couple of things.
One is that it's very easy to use, & works particularly well with landscape shots like those common among the desktop wallpapers Microsoft offers.
Two is that they won't work for every PC &/or laptop running Windows -- with a laptop it might depend on if it's plugged in & so can use a separate GPU -- and the amount of processing resources the wallpaper uses can vary a lot. Where a more powerful graphics card in a PC might barely notice it's working, on another system the CPU might do quite a bit or even struggle.
[If you want to measure or see how much work your system's doing running one of these animated wallpapers, you can check out CPUID's HWMonitor, which gives some basic info; GPU-Z, which gives quite a bit more info focused solely on graphics processors; MSI Afterburner, which besides monitoring the GPU(s), lets you control & tweak graphics hardware.]
Practically speaking the Desktop Paints apps are for the most part light weight, in that installation has a small impact on your system &/or Windows, but they do add a web update service, that rather than run full time as a Windows service, is scheduled through Windows task scheduler.