Drempels is a utility that makes colorful, swirling patterns for you to gaze at, much like a hurricane or tornado. It has three basic "render modes", or ways you can watch it. In Desktop Mode it becomes your Windows background, (also called your desktop or wallpaper). In Windowed Mode, it runs in a small window, just like Solitaire or Word. Finally, in Fullscreen Mode, it takes over your entire screen.....(free).....