Skillmatics Card Game - Guess in 10 American History. Learn all about the USA! Play the ultimate guessing game to learn about US history together - exploring the past while having a blast! Did this event occur before the 20th century? Were other countries affected as well? Think hard ask up to 10 yes or no questions and be the first player to collect 7 game cards to win! Test your knowledge of American History by asking up to 10 questions to win the card. The ultimate family guessing game for ages 8 and up.