Least Densely Populated Countries

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

20 random countries have been removed from the map of the world! Can you identify them in 3 minutes?

Below you will see 45 European cities. Click the ones that are the capital of a sovereign nation without making any false steps.

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