There is a way to run Wallpaper Engine files on Mac, with caveats

Mac users can finally run their favorite Wallpaper Engine animated backgrounds natively without booting up Windows. Here's how to get it done, and what the limitations are today. Vivid Walls has an aurora wallpaper. Image credit: v2osk Wallpaper Engine lets people create animated desktop backgrounds, including scenes that respond to music or the mouse pointer.