30 biggest cities in Oregon

Can you name all the countries that have ever been members of OPEC, the Organization of Petroleum Exporting Countries?

Guess the world's twenty most-traded currencies, and the countries or special regions that issue them.

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

Drag the pin onto the correct country. Careful, though! Three wrong moves and the game ends.