9 Multi-platform computer software for the creation, animation, visualization and pre-visualization of 3D multimedia contents in real time and not; apparatus and instruments for the creation, animation, visualization and pre-visualization of 3D multimedia contents in real time and not, namely, computer hardware, mobile telephones, computer game consoles for use with display screens or monitors, video game consoles, game controllers for computer games, hand-held units for playing electronic games and video games, video players for playing audio-visual content including movies and television programs which are stored on electronic memory devices, multimedia video screens, and multimedia projectors; computer software for the production and post-production of 3D multimedia contents, for the creation of 3D virtual reality contents and 3D special effects; apparatus and instruments for the production and post-production of 3D multimedia contents, for the creation of 3D virtual reality contents and 3D special effects, namely, cinematographic cameras, computer hardware for integration of text, audio, graphics, still images and moving pictures into an interactive delivery for multimedia applications; computer software for the management and streaming of 3D multimedia contents; apparatus and instruments for the management and streaming of 3D multimedia contents, namely, digital media streaming devices; computer software for 3D-based navigation and geo-positioning in the fields of vehicle navigation, avionics, online video games, and for mapping, tracking, and determining locations, distances, directions and routes for pedestrians; apparatus and instruments for 3D-based navigation and geo-positioning, namely, a satellite navigation system in the nature of a global positioning system for use with computer hardware, mobile telephones, and online video games; 3D video game software; video game cartridges adapted for use with an external display screen or monitor; apparatus and instruments for recording, transmission or reproduction of sounds and images, in particular mobile multimedia display units in the nature of portable media players and handheld personal computers; professional cameras, and 3D user interfaces in the nature of graphical user interface software, universal peripheral interface hardware, and user interfaces for electronic devices