World Knowledge Lab

Real data. Real challenges. No trivia fluff.

Featured Quizzes

Guess the 20 places where people live the longest. (World Bank, 2023)

Guess the 20 largest economies in the world. (World Bank, 2023)

Name the 20 largest cities by population (World Bank, 2025)

Name the 10 most valuable companies by market cap (World Bank, 2025)