“Ai la trieu phu - Who is the millionaire” is a puzzle game based on game show on TV. Players will answer in turn 15 multiple-choice questions from easy to difficult, each question they must choose a correct answer out of 4 given choices. The winner is the one who passes the fifthteenth question in 10 minutes. To answer 15 questions, players will have 4 lifelines: eliminate 2 incorrect answers, phone an expert, ask the audience and switch the question.