| Reign | Main rule | Answer | % Correct |
|---|---|---|---|
| 336 BC - 323 BC | Greece, Egypt, Persia | Alexander the Great | 96%
|
| 1762 - 1796 | Russia | Catherine the Great | 79%
|
| 1682 - 1725 | Russia | Peter the Great | 77%
|
| 1462 - 1505 | Russia | Ivan the Great | 72%
|
| 306 - 337 | Roman Empire | Constantine the Great | 63%
|
| 768 - 814 | Holy Roman Empire | Charles the Great | 62%
|
| 1740 - 1786 | Prussia | Frederick the Great | 53%
|
| 527 - 565 | Roman Empire | Justinian the Great | 53%
|
| 1978 - 2005 | Rome | John Paul the Great | 52%
|
| 936 - 973 | Holy Roman Empire | Otto the Great | 41%
|
| 590 - 604 | Rome | Gregory the Great | 26%
|
| 379 - 395 | Roman Empire | Theodosius the Great | 23%
|
| 440 - 461 | Rome | Leo the Great | 20%
|
| 858 - 867 | Rome | Nicholas the Great | 15%
|
| 1331 - 1346 | Serbia | Stefan Dušan the Great | 12%
|
| 364 - 375 | Roman Empire | Valentinian the Great | 10%
|
| 893 - 927 | Bulgaria | Simeon the Great | 9%
|
| 475 - 526 | Italy | Theoderic the Great | 9%
|
| 858 - 886 | Constantinople | Photios the Great | 1%
|