| The Trojan War | 0 | - | 4.83 | 39,629 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,466 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,785 |
| Name that Greek Letter | 0 | - | 4.93 | 322,976 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,918 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,388 |
| Roman Emperors | 0 | - | 4.95 | 119,592 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,418 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,596 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,424 |
| Name the English Monarchs | 0 | - | 4.91 | 501,162 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,470 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,677 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,841 |
| Roman Names for Places | 0 | - | 4.62 | 58,150 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,328 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,858 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,342 |
| Medieval English History | 0 | - | 4.53 | 43,446 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,817 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,074 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,223 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,660 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,559 |
| Countries Bordering France | 0 | - | 4.83 | 401,724 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,484 |
| Ancient Greek Words | 0 | - | 4.93 | 111,284 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,159 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,727 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,549 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,087 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,921 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,471 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,345 |
| Departments of France | 0 | - | 4.93 | 53,678 |
| Germany Country Quiz | 0 | - | 4.82 | 157,486 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,815 |
| Italy Country Quiz | 0 | - | 4.82 | 123,112 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,031 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,737 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,505 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,605 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,295 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,144 |
| England or Wales? | 0 | - | 4.94 | 45,578 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,375 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,699 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,158 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,771 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,066 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,931 |
| Greece Country Quiz | 0 | - | 4.74 | 66,096 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,110 |
| Counties of Ireland | 0 | - | 4.92 | 194,480 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,732 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,637 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,529 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,985 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,218 |
| History of Scotland | 0 | - | 4.51 | 21,067 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,191 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,648 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,296 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,602 |
| Kings of France Quiz | 0 | - | 4.20 | 32,673 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,887 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,055 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,316 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,232 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,281 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,098 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,761 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,109 |
| English Royal Consorts | 0 | - | 4.37 | 37,305 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,381 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,804 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,705 |
| The Only European Country ... | 0 | - | 4.91 | 215,825 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,652 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,238,920 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,625 |
| History of Russia Quiz | 0 | - | 4.49 | 31,874 |
| French History Multiple Choice | 0 | - | 4.55 | 32,991 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,837 |
| History of Italy | 0 | - | 4.55 | 31,928 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,603 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,153 |
| Counties of England | 0 | - | 4.97 | 794,295 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,781 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,690 |
| History of London | 0 | - | 4.33 | 26,160 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,433 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,895 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,364 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,907 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,998 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,932 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,852 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,295 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,929 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,662 |
| Slavic Countries | 0 | - | 4.96 | 111,431 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,369 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,904 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,972 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,879 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,704 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,482 |
| Champions League Winners | 0 | - | 4.92 | 1,003,210 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,628 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,184 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,828 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,450 |
| Monarchies of Europe | 0 | - | 4.90 | 97,887 |
| European Countries with One Border | 0 | - | 4.97 | 182,435 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,248 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,750 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,094 |
| Countries That Border Russia | 0 | - | 4.98 | 460,942 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,685 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,607 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,618 |
| France Country Quiz | 0 | - | 4.70 | 134,689 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,061 |
| Geography of the French Empire | 0 | - | 4.45 | 27,017 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| History of France | 0 | - | 4.59 | 56,779 |
| French History A-Z | 0 | - | 4.23 | 24,521 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,478 |
| States of Germany | 0 | - | 4.96 | 151,732 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,455 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,828 |
| Regions of Italy | 0 | - | 4.92 | 75,482 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,675 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,421 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,349 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,694 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,355 |
| The Vikings! | 0 | - | 4.46 | 28,313 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,007 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,711 |
| The Portuguese Empire | 0 | - | 4.58 | 12,043 |
| Spain Country Quiz | 0 | - | 4.45 | 128,242 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,563 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,230 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,943 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,497 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,537 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,668 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,299 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,257 |
| Geography of the British Empire | 0 | - | 4.48 | 39,624 |
| Animals in British History | 0 | - | 4.44 | 25,967 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Counties of Wales | 0 | - | 4.63 | 39,168 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,554 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,686,023 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,443 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,811 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,714 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,018 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,254 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,304 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,432 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,162 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,544 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,697 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,693 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,245 |
| Countries that Border Poland | 0 | - | 4.99 | 171,995 |
| Russia Country Quiz | 0 | - | 4.85 | 114,215 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,684 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,066 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,207 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,060 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,275 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,214 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,749 |
| German Inventions | 0 | - | 3.91 | 30,216 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,613 |
| Roman to Greek God | 0 | - | 4.52 | 122,625 |
| History of Ireland | 0 | - | 4.39 | 31,086 |
| Italian History A-Z | 0 | - | 4.21 | 17,655 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,053 |
| Roman History by Picture | 0 | - | 4.46 | 26,428 |
| Byzantine History | 0 | - | 4.91 | 28,744 |
| History of The Netherlands | 0 | - | 4.46 | 17,400 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,764 |
| Finland Country Quiz | 0 | - | 4.50 | 59,489 |
| Norway Country Quiz | 0 | - | 4.44 | 77,137 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,056 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,657 |
| Spanish History A-Z | 0 | - | 4.37 | 19,251 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,314 |
| UK Immigration by Country | 0 | - | 4.94 | 140,592 |
| Arthurian Legend | 0 | - | 4.33 | 25,092 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,312 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
