Lego Pacman game. Researcher testing a three dimensional game of Pacman played by Lego robots. In this game the player operates the good" yellow robot by remote control whilst the "bad" red robots will automatically try to capture it. The game is played in a maze marked out with black lines on a white background. The red robots are controlled by Mindstorm computer Lego bricks which are programmed to chase and capture the yellow robot. The red robots negotiate the maze with the help of optical sensors that recognize the black lines. The bad robots also have optical sensors that help them to locate the good robot. Photogra- phed at LegoLab, University of Aarhus, Denmark."