RULES: Only the 53 2-LETTER beginnings with 10+ cities over 25K population are included. You start with only 5 minutes. Two letters will appear initially - name the largest city beginning with those 2 letters, then the letters will change after an answer and you do the same for the next letters that show up. You get 10 SECONDS EXTRA TIME each time you extend the top cities in a row for each prefix you complete. When you name the largest city for the prefix you will get 10 seconds, when you complete the top 2 you get 10 seconds, etc. After every answer for a prefix the quiz will choose another 2 letters at random with weighting (SEE NOTE BELOW ON HOW - COULD be the same letters) and the top 10 will display. IF TWO CITIES have the same name in for that prefix, you will ONLY have the one with higher population answered for your guess. YOU CAN TYPE 'next' to skip a beginning if you are stumped on it - HOWEVER you are docked 15 seconds, and could possibly get the same letters chosen randomly on the next turn. NOTE: Letters are chosen at random based on a random number PROPORTIONAL to the population of unguessed cities left for them, so a beginning with total pop of unguessed cities of 2M is twice as likely as one of 1M of being selected. EXAMPLE: let's say you name the 2nd biggest city for the letters your first turn on it...you get NO bonus time. Second time on it you get the top city - you then get 10 bonus seconds. If you had gotten the top city first and then the 2nd biggest you would have gotten 20 (10 + 10) total seconds of bonus time. YOU MUST THINK VERY QUICKLY AT FIRST, and know your largest cities by beginning letters..that is the goal of this quiz.