One contestant plays at a time, answering up to six questions and accumulating a bank of up to £250,000. The centrepiece of the stage is a large screen framed by a U-shaped track. The screen is divided vertically into several zones based on the phase of the game. The contestant presses a button to set the initial height of the ball at the right side, after which it is released to roll back and forth on the track. The result is determined by the zone in which the ball stops; if it covers a boundary, the zone containing the majority of the ball takes precedence. For each question, the contestant is given a category and shown two groups of three items each. They must pair the items up to form three responses that fit the category. (E.g. given the category "Bands" and the groups "Backstreet / Jonas / One" and "Direction / Boys / Brothers," pair them up as
Backstreet Boys,
Jonas Brothers, and
One Direction.) If the contestant responds correctly, they roll one ball in an effort to increase their bank. The screen displays one zone with the maximum value for that question, several others with smaller values, and two narrow red danger zones. If the ball lands in a money zone, that amount is added to the bank. The maximum value increases from one question to the next (£10,000, £20,000, £30,000, £40,000, £50,000, and £100,000). The screen displays a total of five money zones at the start of the game; for later questions, only four money zones are used in conjunction with wider danger zones. If the contestant either responds incorrectly or lands a ball in a danger zone, no money is added to the bank for that turn and they must play a "Danger Board." The screen is divided into five zones of equal width, either blue "Safe" or red "Lose" zones. If the ball stops in "Safe," the game continues; if it stops in "Lose," the contestant is immediately dismissed with no winnings. The first Danger Board of the game has three "Safe" and two "Lose" zones, and each subsequent board changes one of the former to the latter type. Once per game, the contestant may play a "Clue Ball" after giving a response. The screen is divided into three zones, one per pairing, and the pairing on which the ball stops is revealed as correct or incorrect. The contestant may use this information as they see fit before locking in their final response to the question. After any turn, the contestant may choose to end the game and attempt to cash out. The screen is divided into five zones, two wide gold ones alternating with three narrower red "Lose" zones. The contestant wins the entire bank if the ball stops on a gold zone, or nothing if it stops on "Lose." ==Transmissions==