Party Game 20 Second Showdown. Suitable for 5 to 20 players aged 10 and up. A lightning-fast party game. One player is the referee. The others divide into two teams, sit opposite each other, and brace themselves. At the start of each round, the referee returns the hourglass with an equal amount of sand in each half. The referee turns over the hourglass and reads the card aloud. Each card contains 2 challenges, and the referee determines which side is used in a round. Stand up and do the YMCA. Introduce yourself properly without closing your mouth. Name three countries that start with the letter B. Use your own sock as a hand puppet. Name all the things you ate today. With every challenge completed, the referee turns over the hourglass. To win, you must force the other team to run out of sand by completing your challenges as quickly as possible. The first team to run out of sand loses the round, and the first team to win three rounds is crowned champion!