| Two Letter Roman Numerals | 0 | - | 4.97 | 56,350 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,458 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,564 |
| Byzantine History | 0 | - | 4.91 | 28,960 |
| Byzantine Emperors | 0 | - | 4.92 | 14,442 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,408 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,330 |
| Roman Emperors | 0 | - | 4.95 | 120,669 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,650 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,673 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,379 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,885 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,077 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,282 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,928 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,173 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,322 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,482 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,279 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,746 |
| Ancient Greek Words | 0 | - | 4.93 | 112,103 |
| Regions of Italy | 0 | - | 4.92 | 76,487 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 43,441 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,101 |
| Roman Names for Places | 0 | - | 4.62 | 58,540 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,714,127 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,872 |
| History of Italy | 0 | - | 4.55 | 32,094 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,658 |
| Roman History by Picture | 0 | - | 4.46 | 26,534 |
| Name the English Monarchs | 0 | - | 4.91 | 504,770 |
| Europe Map Quiz | 0 | - | 5.00 | 4,776,270 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,928 |
| Name that Greek Letter | 0 | - | 4.93 | 324,435 |
| Mythology A-Z | 0 | - | 4.31 | 37,322 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,101 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,575 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,835 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,760 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,653 |
| The Trojan War | 0 | - | 4.83 | 39,886 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,491 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,848 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,505 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,830 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,142 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,220 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,197 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,996 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,429 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,415 |
| The Only European Country ... | 0 | - | 4.91 | 217,937 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,931 |
| Roman to Greek God | 0 | - | 4.52 | 123,123 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,108 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,513 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,034 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,508 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,286 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,285 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,251,407 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,309 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,157 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,715 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,858 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,507 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,838 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,213 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,939 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,053 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,775 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,538 |
| Slavic Countries | 0 | - | 4.96 | 112,055 |
| History of Russia Quiz | 0 | - | 4.47 | 31,975 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,450 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,938 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,757 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,345 |
| Counties of England | 0 | - | 4.97 | 800,258 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,008 |
| Lord of the Rings Decoder | 0 | - | 4.61 | 42,717 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,638 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,247 |
| Champions League Winners | 0 | - | 4.92 | 1,011,622 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,432 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,100 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,251 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,495 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,424 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,207 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,072 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,992 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,143 |
| Monarchies of Europe | 0 | - | 4.90 | 98,497 |
| European Countries with One Border | 0 | - | 4.97 | 183,336 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,108 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,704 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,867 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,658 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,109 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,013 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,363 |
| Russia Country Quiz | 0 | - | 4.83 | 114,840 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,422 |
| Countries That Border Russia | 0 | - | 4.98 | 463,508 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,551 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,241 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,464 |
| History of Austria | 0 | - | 4.70 | 17,929 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,833 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,043 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,374 |
| Departments of France | 0 | - | 4.93 | 54,699 |
| Geography of the French Empire | 0 | - | 4.45 | 27,183 |
| The French Revolution | 0 | - | 4.47 | 24,091 |
| Countries Bordering France | 0 | - | 4.83 | 404,004 |
| History of France | 0 | - | 4.61 | 57,388 |
| Germany Country Quiz | 0 | - | 4.83 | 158,422 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,386 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,792 |
| States of Germany | 0 | - | 4.95 | 153,690 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,529 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,414 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,059 |
| Countries of the German Empire | 0 | - | 4.51 | 38,077 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,139 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,981 |
| Italy Country Quiz | 0 | - | 4.77 | 123,765 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,758 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,137 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,555 |
| The Vikings! | 0 | - | 4.46 | 28,383 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,228 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,771 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,436 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,517 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,288 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,246 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,427 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,016 |
| Geography of the British Empire | 0 | - | 4.48 | 39,792 |
| Medieval English History | 0 | - | 4.53 | 43,604 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,811 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,781 |
| England or Wales? | 0 | - | 4.94 | 45,850 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,600 |
| Countries of the Popes | 0 | - | 4.79 | 128,465 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,361 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,644 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,213 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,866 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,791 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,418 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,246 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,575 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,711 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,614 |
| Countries that Border Poland | 0 | - | 4.99 | 172,779 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,061 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,221 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,929 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,673 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,795 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,966 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,757 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,022 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,336 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,479 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,906 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,767 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,340 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,046 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,759 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,830 |
| Counties of Ireland | 0 | - | 4.92 | 196,430 |
| Italy A-Z | 0 | - | 4.49 | 58,544 |
| Italian History A-Z | 0 | - | 4.21 | 17,753 |
| History of The Netherlands | 0 | - | 4.46 | 17,505 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,858 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,633 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,262 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,587 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,166 |
| Arthurian Legend | 0 | - | 4.33 | 25,138 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,853 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,610 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,439 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,312 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,873 |
| British History A-Z #1 | 0 | - | 4.45 | 46,632 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,839 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,912 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,242 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,024 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,847 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,380 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,859 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,889 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,099 |
