Countdown (game show)
FormatCountdown has occupied a tea-time broadcast slot since its inception, originally in a 30-minute format. Since 2001, an episode lasts around 45 minutes including advertising breaks. During the normal series, the winner of each game returns for the next day's show. A player who wins eight games is declared an "octochamp" and retires from the programme. At the end of the series, the eight best players (ranked first by number of wins, then by total score if required to break a tie) are invited back to compete in the series finals. They are seeded in a knockout tournament, with the first seed playing the eighth seed, the second playing the seventh, and so on. The winner of this knockout, which culminates in the Grand Final, becomes the series champion. Each series lasts around six months, with about 125 episodes.