LEGO Flow is a simple but playful interactive table. Here children and playful adults can interact with an endless stream of virtual LEGO bricks flowing downwards on a slightly tilted screen. By the use of the screen's finger tracking feature, touches on the screen create red virtual LEGO walls that act as dams that block the stream of LEGO bricks. Colorful tangible objects made by LEGO bricks act as color “magnets” that attract or repel all the virtual LEGO bricks of a particular color. Turning a eg. yellow tangible clockwise increases the attraction of yellow virtual LEGO bricks to that tangible, turning counterclockwise, the virtual yellow LEGO bricks are increasingly repelled. CAVI designed this installation to demonstrate the features of a 55" Multitaction Cell, a touch screen that generates finger and marker tracking data that can be used as input for all sorts of software applications.

LEGO Flow demonstrates how the users, children in particular, explore a software application and invent their own games using their fingers and the LEGO tangibles, by offering simple and intuitive interaction.

LEGO Flow was one of CAVI's installations at LEGO World 2012 and 2013, and received considerable attention from the visitors, especially from the children.