Timebusters is a British science-fiction game show for children that
aired on the BBC in the 1990s across 3 series. Hosted by Professor
McNulty (Michael Troughton), each of the 37 episodes has two teams
boarding special time-traveling buses that take them back into history
to meet famous personalities. The aim of the game is to find a
tube-shaped goal before the villain of the show. As they go about their
quest, the contestants must decipher various clues and solve puzzles.
The game has a time limit before the buses become unstable and have to
return to the present.