All countries that were involved in WW1

How many countries do you know? In this quiz, you've got 15:00 to name as many as you can. Go!

Try to name the most-populous American cities whose names are 5 letters long or fewer.

Click on every square of the world map which contains an urban agglomeration with a population of at least 10 million.

Drag the flag onto the correct country. Careful, though! One wrong move and the game ends.