| Name the English Monarchs | 0 | - | 4.92 | 497,318 |
| Monarchies of Europe | 0 | - | 4.90 | 97,197 |
| Departments of France | 0 | - | 4.93 | 52,633 |
| Countries Bordering France | 0 | - | 4.85 | 395,690 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,482 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,456 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,750 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,275 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,381 |
| Kings of France Quiz | 0 | - | 4.20 | 32,534 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,249 |
| The Trojan War | 0 | - | 4.83 | 39,392 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,327 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,955 |
| Roman Emperors | 0 | - | 4.95 | 118,270 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,749 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,283 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,226 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,976 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,894 |
| Regions of France Map Quiz | 0 | - | 4.97 | 142,982 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,635 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,905 |
| English Royal Consorts | 0 | - | 4.37 | 37,138 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,580 |
| Monarchies of Asia | 0 | - | 4.97 | 70,531 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,954 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,638 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,160 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,014 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,090 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,188 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,887 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,043 |
| Germany Country Quiz | 0 | - | 4.82 | 156,385 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,050 |
| Italy Country Quiz | 0 | - | 4.82 | 122,063 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,243 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 150,973 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,341 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,864 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,490 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,091 |
| England or Wales? | 0 | - | 4.94 | 45,276 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,112 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,803 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,835 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,636 |
| France Country Quiz | 0 | - | 4.70 | 133,715 |
| Geography of the French Empire | 0 | - | 4.48 | 26,911 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| History of France | 0 | - | 4.59 | 55,865 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,008 |
| Counties of Ireland | 0 | - | 4.92 | 192,774 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,352 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,151 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,110 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,778 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,402 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,578 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,689 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,350 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,535 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,235 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,737 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,745 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,119 |
| Name that Greek Letter | 0 | - | 4.94 | 321,411 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,789 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,584 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,392 |
| British Monopoly Board | 0 | - | 4.52 | 41,017 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,593 |
| Medieval English History | 0 | - | 4.53 | 43,289 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,422 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,704 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,048 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,322 |
| The Only European Country ... | 0 | - | 4.91 | 213,457 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,303 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Countries that Beat France | 0 | - | 4.49 | 75,101 |
| French History A-Z | 0 | - | 4.17 | 18,581 |
| French History Multiple Choice | 0 | - | 4.55 | 32,851 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,785 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,402 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,028 |
| History of Italy | 0 | - | 4.55 | 31,796 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,494 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,635 |
| Roman Names for Places | 0 | - | 4.62 | 57,813 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,459 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,958 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,353 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,929 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,811 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,894 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,223,858 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,493 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,571 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,184 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,015 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,397 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,537 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,492 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,129 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,056 |
| Slavic Countries | 0 | - | 4.96 | 110,765 |
| 20 Questions About France | 0 | - | 4.11 | 32,327 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,529 |
| Ancient Greek Words | 0 | - | 4.92 | 110,532 |
| Italian History A-Z | 0 | - | 4.21 | 17,337 |
| Spanish History A-Z | 0 | - | 4.36 | 18,995 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,600 |
| Counties of England | 0 | - | 4.97 | 788,223 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,653 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,049 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,714 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,080 |
| Regions of France | 0 | - | 4.78 | 119,015 |
| France Immigration by Country | 0 | - | 4.72 | 75,909 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,315 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,962 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,062 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,021 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,857 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,377 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,102 |
| British History A-Z #1 | 0 | - | 4.45 | 45,732 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,037 |
| History of Scotland | 0 | - | 4.51 | 20,990 |
| Champions League Winners | 0 | - | 4.92 | 994,933 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,261 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,953 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,196 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,620 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,102 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,628 |
| European Countries with One Border | 0 | - | 4.97 | 181,443 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,960 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,108 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,555 |
| Countries That Border Russia | 0 | - | 4.98 | 458,504 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,095 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Austria Country Quiz | 0 | - | 4.57 | 59,275 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,153 |
| French Inventions | 0 | - | 4.08 | 13,859 |
| History of Paris | 0 | - | 4.24 | 13,611 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,546 |
| States of Germany | 0 | - | 4.96 | 149,742 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,369 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,897 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,883 |
| Greece Country Quiz | 0 | - | 4.74 | 65,700 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,405 |
| Regions of Italy | 0 | - | 4.92 | 74,586 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,108 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,443 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,190 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,892 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,723 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,700 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,649 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,265 |
| The Portuguese Empire | 0 | - | 4.54 | 11,979 |
| Spain Country Quiz | 0 | - | 4.45 | 127,469 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,125 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,873 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,050 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,828 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,156 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,544 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,153 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,688 |
| Geography of the British Empire | 0 | - | 4.48 | 39,455 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,326 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Counties of Wales | 0 | - | 4.63 | 38,829 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,376 |
| Battle to Country | 0 | - | 4.91 | 52,423 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,697 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,281 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,953 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,995 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,476 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,960 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,071 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,944 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,221 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 112,996 |
| Russia Country Quiz | 0 | - | 4.85 | 113,549 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,786 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 34,993 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,605 |
| German History A-Z | 0 | - | 4.49 | 24,164 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,648 |
