
After every ten seconds, one drop zone opened on the playfield. The clock (also represented by the light border around the stage) would begin ticking while Mark asked the first question. The contestant was moved to the top-left zone and had 60 seconds to answer five "brain-teaser" questions referred to by the host as "5 Killer Questions." These usually consisted of jumbles, math problems and general-knowledge questions. In the case of a tie at the end of the third round, the tiebreaker rules from the first two rounds were used. The last person remaining at the end of this round assimilated the other player's score (if any) into his/her winnings and advanced to the endgame. Whoever had the lower amount at the end of the round when time was up was the one to drop. As always a wrong answer forced the player to play Russian Roulette a right answer gave him/her money and control of the next question. Correct answers in this round were worth $300 in Season 1, but reduced to $250 in Season 2.

In the third round, since only two players remained, contestants had the choice to answer the question themselves or pass it to their opponent. In the first round, the contestants received $150 for each correct answer and $200 in the second round. In the case of a tie for first place in a round-ending Russian Roulette, Mark himself would pull the lever, and all players were in danger of dropping. This ended the round, with the winnings of the eliminated player (if any) being equally distributed among the remaining players (including the top winner) for the next round. He/she would pull a handle in the center, for a random-elimination spin where a single red light revolved around the cylinder until it stopped on one of the remaining contestants, and a successful drop always happened here. The person with the highest score was escorted to the center of the stage, and was safe from the drop. When time ran out in the first two rounds (indicated by a chime, usually after the fifth question), the winnings of all remaining contestants were compared. Once a player dropped out of the game, the round was over and the next round would begin after a commercial break. Only one injury was reported, a sprained ankle nevertheless contestants were required to sign lengthy waivers and release forms. Contestants were instructed, before the show's taping started, to crouch down and roll when landing so their heads did not remain above the hole. This ended the round if the player survived, the round continued. If the drop zone light stopped on the trapdoor on which the affected player was standing, that trapdoor opened and dropped the player three feet (six feet in Season 1) into a room below the stage, with thick padding to avoid injury of contestants. In Season 2, the player controlled the length of the spin by how long he or she pulled the handle. The number of red lights indicated the number of active drop zones. This triggered the active drop zone lights (in red) to begin spinning around the field, much like a roulette wheel or (more appropriate to the metaphor) the cylinder of a revolver. After the host gave the player a chance to say some last words, they would pull a handle in front of their trapdoor. The trapdoor of the player who answered incorrectly was unlocked. If the challenged player failed to answer within 10 seconds or gave a wrong answer, he/she forfeits all the money to the challenger and was forced to play Russian Roulette by pulling a handle in front of them. After every question, another "drop zone" was added, increasing the odds that the player would be eliminated after an incorrect answer from the fifth question onward, there were always five drop zones.

If the challenged player gave the correct answer, they received money and control of the next question.

The challenged contestant had 10 seconds to answer. One contestant, randomly selected to start the game, was read a multiple choice question (three choices in the first round, four thereafter, all increasing in difficulty as the round progressed) by the host, and had to challenge another contestant to answer correctly. The four players were each given $150 at the beginning of the show. Four players competed each show all competing to survive and play for up to $100,000.
