Europa is a 3D shell for Windows 95/98/NT v4.0 or greater. It uses OpenGL for the graphics engine and requires a good OpenGL video accelerator to be usable. It currently runs on top of Explorer. When Europa starts it will create rotating boxes for all of your desktop icons. Simply double click an icon and the program will start as usual. You may move the icons around with mouse, but their positions will not be saved. When you minimize a running application the window is captured by Europa and displayed. The right mouse button is a context sensitive menu. If you have a mouse with a mousewheel, you can change the depth where an object is displayed.