| Two Letter Roman Numerals | 0 | - | 4.97 | 55,634 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,368 |
| Ancient Greek Words | 0 | - | 4.92 | 110,722 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,700 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,965 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,761 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,496 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,695 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,981 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,450 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,446 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,140 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,037 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,193 |
| Countries Bordering France | 0 | - | 4.83 | 399,367 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,400 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,546 |
| Departments of France | 0 | - | 4.93 | 52,855 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,938 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,537 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,032 |
| Name the English Monarchs | 0 | - | 4.92 | 498,058 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,162 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,994 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,522 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,542 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,816 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,613 |
| History of France | 0 | - | 4.59 | 56,088 |
| The Trojan War | 0 | - | 4.83 | 39,442 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,050 |
| Name that Greek Letter | 0 | - | 4.94 | 321,722 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,576 |
| Mythology A-Z | 0 | - | 4.31 | 37,008 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,062 |
| Roman Emperors | 0 | - | 4.95 | 118,514 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,508 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,281 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,157 |
| Geography of the French Empire | 0 | - | 4.48 | 26,941 |
| The French Revolution | 0 | - | 4.46 | 23,788 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,800 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,334 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,465 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,392 |
| Roman History by Picture | 0 | - | 4.46 | 26,346 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,512 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,530 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,947 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,158 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,373 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,964 |
| The Vietnam War | 0 | - | 4.43 | 35,299 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,056 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,172 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,373 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,021 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,615 |
| The Only European Country ... | 0 | - | 4.91 | 213,919 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,592 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,777 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,384 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Germany A-Z | 0 | - | 4.56 | 62,327 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,313 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,672 |
| Iceland... or Ireland? | 0 | - | 4.74 | 56,788 |
| History of Italy | 0 | - | 4.55 | 31,820 |
| Italy A-Z | 0 | - | 4.49 | 57,738 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,630 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,488 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Counties of England | 0 | - | 4.97 | 789,416 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,451 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,206 |
| Middle Earth Geography | 0 | - | 4.56 | 39,546 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,852 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,540 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,198 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,080 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,866 |
| Flags of WW1 | 0 | - | 4.60 | 37,953 |
| The American Revolution | 0 | - | 4.52 | 54,060 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,348 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,730 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,311 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,060 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,402 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,424 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,488 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,904 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,893 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,992 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,845 |
| Monarchies of Europe | 0 | - | 4.90 | 97,342 |
| European Countries with One Border | 0 | - | 4.97 | 181,661 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,558 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,288 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,288 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,218 |
| Slavic Countries | 0 | - | 4.96 | 110,881 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,046 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,225 |
| France Country Quiz | 0 | - | 4.70 | 133,873 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| Regions of France | 0 | - | 4.78 | 119,295 |
| France Immigration by Country | 0 | - | 4.72 | 75,980 |
| History of Paris | 0 | - | 4.24 | 13,616 |
| Kings of France Quiz | 0 | - | 4.20 | 32,560 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,733 |
| States of Germany | 0 | - | 4.96 | 150,131 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,048 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,007 |
| Regions of Italy | 0 | - | 4.92 | 74,754 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,833 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,393 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,219 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,983 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,189 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,809 |
| Geography of the British Empire | 0 | - | 4.48 | 39,481 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,600 |
| Champions League Winners | 0 | - | 4.92 | 996,650 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,926 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,876 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,188 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,380 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,689 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,651 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,290 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,056 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,269 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,139 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,798 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,868 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,179 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,287 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,851 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,124 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,601 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,277 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,215 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,900 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,287 |
| Countries that Border Poland | 0 | - | 4.99 | 171,383 |
| Russia Country Quiz | 0 | - | 4.85 | 113,659 |
| Countries That Border Russia | 0 | - | 4.98 | 458,980 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,391 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,552 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,865 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,713 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,043 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,774 |
| History of Austria | 0 | - | 4.70 | 17,756 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,795 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,237 |
| Countries that Beat France | 0 | - | 4.49 | 75,189 |
| France True or False? | 0 | - | 4.43 | 39,785 |
| Ligue 1 Champions | 0 | - | 4.18 | 48,133 |
| Germany Country Quiz | 0 | - | 4.82 | 156,599 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,172 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,388 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,115 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,389 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,925 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,444 |
| Counties of Ireland | 0 | - | 4.92 | 193,138 |
| Italy Country Quiz | 0 | - | 4.82 | 122,245 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,427 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,108 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,468 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,360 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,377 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,542 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,678 |
| Roman Names for Places | 0 | - | 4.62 | 57,885 |
| Byzantine History | 0 | - | 4.91 | 28,627 |
| The Vikings! | 0 | - | 4.46 | 28,248 |
| The Portuguese Empire | 0 | - | 4.54 | 11,995 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,972 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,676 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,028 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,346 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,327 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,678 |
| Lord of the Rings - Races | 0 | - | 4.24 | 58,423 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.64 | 20,494 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,305 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,541 |
| Medieval English History | 0 | - | 4.53 | 43,326 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,965 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,840 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,042 |
| Doctor Who Actors | 0 | - | 4.61 | 17,854 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,763 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,783 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,466 |
