The ‘Cube’ is an attempt to use 3D user interface to replace the 2D windows desktop. (The website contains explanations, features, details, and screenshots/videos.) It supports conventional applications (which use 2D win32 GUI) smoothly into 3D objects. The work space is a ’round’ room, user can roam inside the room, place 3D objects on ceiling, floor or the walls. User can move, rotate and trigger event on objects. And there is a ‘Species Launcher’ which is the 3D version of ‘start menu’. User can open tree structured menu items level by level, and there is a history of levels, user can fall back to a previous opened level.