The set designed for "Who Wants to Be a Millionaire?" was conceived by British production designer Andy Walmsley, who focused the design towards making contestants feel uncomfortable, creating an atmosphere of tension similar to a movie thriller. The design was in stark contrast to the design of sets made for more typical game shows, which are designed to make contestants feel more at ease. Walmsley's design feature a central stage made primarily with Plexiglas, with a huge dish underneath covered in mirror paper, onto which two slightly-modified, -high Pietranera Arco All chairs were chosen for use by both the contestant and the host, each having an LG computer monitor directly facing each that would be used to display questions and other pertinent information. The rest of the set featured seating spaced out around the main stage in a circle, with breaks in them to allow movement of people on and off the set. The lighting rig used for the set was designed so as to allow not only the lights to switch from illuminating the entire set, to focusing on the host and contestant on the main stage when a game was underway, but to include special lighting effects when the contestant reached higher cash prize amounts. His overall conception would eventually prove to be a success, becoming one of the most reproduced scenic designs in television history.