Is starboard on the left or right side of a boat? How do you say ”Japan” in Japanese? Is a penquin a bird? How long did Sleeping Beauty actually sleep?

...I should have known that! is an addictively entertaining trivia game with over 400 questions about things that you should know. In contrast to traditional trivia formats, you don’t receive points for answering questions correctly. Instead, points are subtracted for every incorrect answer!

Be prepared to see how much you know without Google and Wikipedia at your fingertips!