having four possible answers. In round three, the two remaining contestants face off with questions valued at $300 (season 1) or $250 (season 2). Play is similar to rounds one and two, except that the contestant who first hears the question may elect to answer it themselves or challenge their opponent. After round three, the last contestant standing keeps all their money and goes to the bonus round, while the runner-up drops automatically. If the runner-up had money after dropping in the third round, that money is given to the last contestant standing. If there is a tie at the end of round three, one final random Russian Roulette spin is played to determine the winner. Bonus round The winning contestant is moved to the top-left zone and has 60 seconds to answer five "brain-teaser" questions correctly (ten multiple-choice questions of three answers in Season Two). These usually consist of anagrams and jumbled words (unscrambling letters to form the answer based on clues given), math problems and general-knowledge questions. The timer begins ticking while the host asks the first question. After every ten seconds, one drop zone opens on the play field. If time runs out or the contestant at any time gives an incorrect answer, he or she drops, but receives $500 ($300 in season two) for every correct answer. The contestant has the option to pass on a question and return to it if time permits. In Season One, the contestant was required to begin each answer with the phrase "My answer is..." so that thinking aloud would not be mistaken for an answer, but it is no longer required on Season two. For answering all the questions correctly, the contestant's winnings for this round is augmented to $10,000; the contestant is given an option to exchange the $10,000 for one final game of Russian Roulette for a grand prize of $100,000, with the number of drop zones opening during the previous segment used as the number of drop zones for the final game. At the end of the show's run, three contestants had survived the final drop and won the $100,000 grand prize. International versions On all versions of Russian Roulette outside of the U.S., the UK, Argentina, Portugal, and Poland (in season two), there are also displays of the contestants' heart rates on the screen (examples include Russia's, Poland's (season one), and Hong Kong's versions), and