A Zook is created from a variety of 3D components and is then able to move autonomously by way of a physics simulation engine.
During the TV show, teams of young people compete by entering Zooks that they have designed into various competitions. These vary from simple races to obstacle courses and tests of strength.
The Zook contests are then merged into the BBC's virtual studio to give the impression that the Zooks are physically alive and racing in the studio. Each studio camera has its own dedicated PC to render the virtual scene from its perspective, allowing them to follow the action in real time.
The first series of Bamzooki was shown in 2004. At the time of writing (2006) the third series is currently showing on CBBC.