[1] The show relied heavily on science experiments and demonstrations to provide a basis for the trivia questions that the contestants must answer.
Airings continued in reruns for several months past that time, before the show completely disappeared from the network's schedule in spring 2010.
During normal gameplay, all of the questions are related to science experiments or demonstrations which are shown to the contestants as prerecorded video clips.
The final two players progress to the "under the microscope" round, where questions are presented rapidfire for a fixed amount of time, and contestants must buzz-in and choose from one of three answers.
The player with the higher score at the end of the round wins his or her money and a Head Games championship trophy.