The teams had to film the dome sequence twice, once for real, the other showing them jumping around like idiots for the cameras. Even though the fans were blowing the tokens in the air, most still stayed on the ground at the edges, so most of the time the team just stayed on their knees collecting them. This didn't look very exciting on camera, so this part of the show had to be filmed twice, to make it look like the teams were doing something.
The set of The Crystal Maze was the size of a football pitch and at the time was the biggest TV set ever constructed. It cost more than £500,000 and 10,000 man-hours to build and was housed for five years in a disused hanger in North Weald Aerodrome in Essex.
The programme consumed as much electricity during a recording of a series as an average household does in more than 50 years.
50 new games were designed for every series.
Each series took three months to prepare, five weeks to shoot, four months to edit and 14 weeks to screen (nearly an entire year).
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