| Two Letter Roman Numerals | 0 | - | 4.97 | 56,340 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,383 |
| Ancient Greek Words | 0 | - | 4.93 | 112,081 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,054 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,787 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,488 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,743 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,879 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,906 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,267 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,497 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,897 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,072 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,279 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,464 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,267 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,015 |
| Countries Bordering France | 0 | - | 4.83 | 403,942 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,748 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,637 |
| Departments of France | 0 | - | 4.93 | 54,655 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,435 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,634 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,670 |
| Name the English Monarchs | 0 | - | 4.91 | 504,642 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,603 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,570 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,949 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,014 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,328 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,460 |
| History of France | 0 | - | 4.61 | 57,372 |
| The Trojan War | 0 | - | 4.83 | 39,876 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,809 |
| Name that Greek Letter | 0 | - | 4.93 | 324,408 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,464 |
| Mythology A-Z | 0 | - | 4.31 | 37,319 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,259 |
| Roman Emperors | 0 | - | 4.95 | 120,631 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,387 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,663 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,648 |
| Geography of the French Empire | 0 | - | 4.45 | 27,178 |
| The French Revolution | 0 | - | 4.47 | 24,085 |
| French History Multiple Choice | 0 | - | 4.55 | 33,155 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,753 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,806 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,096 |
| Roman History by Picture | 0 | - | 4.46 | 26,528 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,881 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,640 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,255 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,453 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,227 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,566 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,182 |
| The Vietnam War | 0 | - | 4.44 | 35,601 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,945 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,993 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,394 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,100 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,328 |
| The Only European Country ... | 0 | - | 4.91 | 217,861 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,891 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,908 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,029 |
| History of Russia Quiz | 0 | - | 4.47 | 31,974 |
| Germany A-Z | 0 | - | 4.56 | 62,737 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,739 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,137 |
| History of Italy | 0 | - | 4.55 | 32,090 |
| Italy A-Z | 0 | - | 4.49 | 58,527 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,500 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,338 |
| Counties of England | 0 | - | 4.97 | 800,071 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,001 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,436 |
| Middle Earth Geography | 0 | - | 4.56 | 39,893 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 81,634 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,912 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,283 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,081 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,422 |
| Flags of WW1 | 0 | - | 4.60 | 38,555 |
| The American Revolution | 0 | - | 4.52 | 54,305 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,239 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,125 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,679 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,178 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,798 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,043 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,488 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,946 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,753 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,061 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,128 |
| Monarchies of Europe | 0 | - | 4.90 | 98,478 |
| European Countries with One Border | 0 | - | 4.97 | 183,300 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,080 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,594 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,756 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,522 |
| Slavic Countries | 0 | - | 4.96 | 112,028 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,361 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,226 |
| France Country Quiz | 0 | - | 4.70 | 135,325 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Regions of France | 0 | - | 4.70 | 121,478 |
| France Immigration by Country | 0 | - | 4.70 | 76,746 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Kings of France Quiz | 0 | - | 4.20 | 32,854 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,365 |
| States of Germany | 0 | - | 4.95 | 153,642 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,390 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,037 |
| Regions of Italy | 0 | - | 4.92 | 76,464 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,533 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,740 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,503 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,272 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,426 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,001 |
| Geography of the British Empire | 0 | - | 4.48 | 39,785 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,808 |
| Champions League Winners | 0 | - | 4.92 | 1,011,331 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,092 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,713,306 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,388 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,739 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,473 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,402 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,235 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,566 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,162 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,026 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,703 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,028 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,630 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,811 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,054 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,915 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,298 |
| Countries that Border Poland | 0 | - | 4.99 | 172,745 |
| Russia Country Quiz | 0 | - | 4.83 | 114,814 |
| Countries That Border Russia | 0 | - | 4.98 | 463,413 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,054 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,860 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,543 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,511 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,453 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,766 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,823 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,745 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,329 |
| Countries that Beat France | 0 | - | 4.49 | 76,095 |
| France True or False? | 0 | - | 4.44 | 40,006 |
| Ligue 1 Champions | 0 | - | 4.21 | 48,684 |
| Germany Country Quiz | 0 | - | 4.83 | 158,376 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,770 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,525 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,999 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,714 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,130 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,978 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,034 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,748 |
| Counties of Ireland | 0 | - | 4.92 | 196,364 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,844 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,723 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,082 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,533 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,654 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 43,131 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,091 |
| Roman Names for Places | 0 | - | 4.62 | 58,526 |
| Byzantine History | 0 | - | 4.91 | 28,955 |
| Byzantine Emperors | 0 | - | 4.92 | 14,437 |
| The Vikings! | 0 | - | 4.46 | 28,380 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,203 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,398 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,255 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,564 |
| Arthurian Legend | 0 | - | 4.33 | 25,137 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,203 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,558 |
| Lord of the Rings - Races | 0 | - | 4.25 | 58,912 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.61 | 20,814 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,870 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,833 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,361 |
| Medieval English History | 0 | - | 4.53 | 43,597 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,239 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,020 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,378 |
| Doctor Who Actors | 0 | - | 4.61 | 17,964 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,874 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,085 |
