Artists who have collaborated with Britney Spears

Can you name the capitals cities of all 196 countries in the world?

Try to guess the most common words in the English language. You will fail and then kick yourself.

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

On each line, you will see three countries. Guess the one that has the highest population of the three. One wrong guess and it's over.