What's that Stationery?

Try to name the 10 most populous urban areas in each of these historical years.

Can you name the countries with the most heavy metal bands, both in total and per capita?

In 90 seconds, make every country disappear from the map by typing both its first 2 letters and its last 2 letters.

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