Dictators that killed the most people

Name the countries ruled by these dictators such as Pol Pot, Joseph Stalin, and Julius Caesar.

When you guess a country, all the countries it borders will also be completed. Can you fill in the world map in just 90 seconds?

Difficulty level: hard. Name the nations or empires ruled by these leaders.

Do 50 division operations in just a minute. Your run ends if you make a mistake. Prepare to lose, wahahaha!