G108经过的县级行政区

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?

There are 16 countries with a population of at least 100 million. Click them all without clicking any incorrect countries.

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