Round 1: Free Fall

In Free Fall, the team is asked a series of five questions, each with two answer choices. As each question is asked, three balls are simultaneously released from drop zones 1, 4, and 7. The team must select one answer and lock it in before the first ball crosses the threshold of a money slot. If the team's answer is correct, the balls turn green and their values are added to the team's bank. If the team answers incorrectly or fails to lock in an answer, the balls turn red and their values are subtracted from the team's bank.^[10]

If the team's bank balance is zero at the end of this round, the game ends immediately and they leave with no winnings (such occurrences are excluded from broadcast). Otherwise, their earnings become part of a guaranteed payout to be offered to them at the end of the game.

Starting with Series 4, the team may choose to double the total value of any one question by pressing a gold "Doubler" disk while the balls are falling. The maximum possible amount that a team can bank in this round is £37,500 in the first three series; this was later increased to £45,000 for the fourth series.

The values on the board range from £1 to £2,500, and are arranged as follows:

Round 2

At the start of the second round, the contestants are separated from each other for the remainder of the game. One enters an isolation chamber behind The Wall, while the other remains onstage. Two green balls are played simultaneously, dropped from zones chosen by the onstage player. Three multiple-choice questions are then played, each with three answer choices. The onstage player is shown only the answers to each question and must decide which zone to use, based on how confident he/she is that the isolated player can answer correctly. The question and answers are then presented to the isolated player; after he/she responds, the ball is dropped from the chosen zone. A correct answer turns the ball green and adds the value of the slot it lands into the team bank, while a miss turns the ball red and deducts the value. The isolated player is not told which of his/her answers are correct or given any information on the team bank.

The onstage player is offered an opportunity to "Double Up" on the second question and "Triple Up" on the third; these options allow him/her to play two or three balls from the selected drop zone instead of one, respectively.^[10]

After the third question, if the banked total is at least £3 (as the least that could be lost from two red balls is £2), two red balls are dropped simultaneously from the same zones that were chosen for the initial two green balls. The maximum possible amount that a team can bank in this round is £199,998. In the first three series, two initial green balls were played from different zones chosen by the onstage player, and a team could bank up to £199,998. Beginning with the fourth series, seven initial green balls are played in a "SuperDrop," one from every zone, and a team could bank up to £474,998. The values on the board range from £1 to £25,000, and are arranged as follows:

Round 3

The gameplay proceeds as in Round 2, but each of the three questions now has four answer choices. In addition, three green and three red balls are played at the start and end of the round respectively, and are dropped one at a time, rather than simultaneously. The "Double Up" and "Triple Up" options are available as before.^[10]

The maximum possible amount that a team can bank in this round is £449,997.

The values on the board range from £1 to £50,000, and are arranged as follows:

Final Decision

After the third question in Round 3, the isolated player is sent a contract by the host and must either sign or destroy it. After the three red balls have dropped in Round 3 and the final bank is calculated (or after the last question if there is less than £3 banked), the isolated player returns to the stage to reveal his/her decision. Only at this point does he/she learn the number of correct answers given, the payout total, and the team's final bank. If the isolated player signs the contract, the team gives up the team bank in favour of a guaranteed payout, equal to the Free Fall winnings plus an additional £2,500 for every question answered correctly in Rounds 2 and 3 but if the isolated player destroys the contract, the team receives their final bank total instead.^[10]

The maximum possible guaranteed payout is £52,500 (series 1–3) or £60,000 (series 4–), obtained by scoring £37,500 (£45,000 from series 4 onwards), in Free Fall and answering all six questions correctly in Rounds 2 and 3. The maximum possible bank total is £687,495 (£977,495 from series 4 onwards), obtained by answering every question correctly, having every green ball drop into the highest-valued slot, and having the five mandatory red balls each drop into a £1 slot.

Series

Series two and three were shown out of order. The first six episodes of series two were broadcast in 2020, followed by the whole of series three in 2021. Episodes seven and eight of series two were broadcast in July 2021.^[11]

Versus Celebrities

The celebrity editions of The Wall are titled as The Wall Versus Celebrities.^[12]