| Name the English Monarchs | 0 | - | 4.91 | 505,500 |
| Monarchies of Europe | 0 | - | 4.90 | 98,674 |
| Departments of France | 0 | - | 4.93 | 54,881 |
| Countries Bordering France | 0 | - | 4.83 | 404,406 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,080 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,399 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,522 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,729 |
| Kings of France Quiz | 0 | - | 4.20 | 32,882 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,911 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,883 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,344 |
| The Trojan War | 0 | - | 4.83 | 39,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,696 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,497 |
| Roman Emperors | 0 | - | 4.95 | 120,923 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,104 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,742 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,519 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,645 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,403 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,383 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,094 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,565 |
| English Royal Consorts | 0 | - | 4.38 | 37,489 |
| Monarchies of Asia | 0 | - | 4.97 | 71,401 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,198 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,368 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,661 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,591 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,696 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,185 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,468 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,879 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,534 |
| Germany Country Quiz | 0 | - | 4.83 | 158,594 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,915 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,035 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,885 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,706 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,334 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,626 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,481 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,582 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,261 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,821 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,849 |
| France Country Quiz | 0 | - | 4.70 | 135,456 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,117 |
| History of France | 0 | - | 4.61 | 57,480 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,144 |
| Counties of Ireland | 0 | - | 4.92 | 196,870 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,174 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,104 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,829 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,445 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,008 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,967 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,190 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,587 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,119 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,796 |
| Name that Greek Letter | 0 | - | 4.93 | 324,700 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,043 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,738 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,235 |
| British Monopoly Board | 0 | - | 4.52 | 41,240 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,834 |
| Medieval English History | 0 | - | 4.53 | 43,620 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,553 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,322 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,771 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,774 |
| The Only European Country ... | 0 | - | 4.91 | 218,421 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,189 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Countries that Beat France | 0 | - | 4.48 | 76,223 |
| French History A-Z | 0 | - | 4.27 | 25,040 |
| French History Multiple Choice | 0 | - | 4.55 | 33,182 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,160 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,795 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,168 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,098 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,161 |
| Roman Names for Places | 0 | - | 4.62 | 58,617 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,385 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,046 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,278 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,054 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,674 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,097 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,892 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,304 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,856 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,278 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,624 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,226 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,047 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,958 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,651 |
| Slavic Countries | 0 | - | 4.96 | 112,197 |
| 20 Questions About France | 0 | - | 4.11 | 32,452 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,049 |
| Ancient Greek Words | 0 | - | 4.93 | 112,267 |
| Italian History A-Z | 0 | - | 4.16 | 17,882 |
| Spanish History A-Z | 0 | - | 4.37 | 19,470 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,634 |
| Counties of England | 0 | - | 4.97 | 801,413 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,953 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,222 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,138 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,314 |
| Regions of France | 0 | - | 4.70 | 121,778 |
| France Immigration by Country | 0 | - | 4.70 | 76,839 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,997 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,215 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,128 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,417 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,382 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,971 |
| British Geography A-Z | 0 | - | 4.42 | 19,593 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,772 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,346 |
| British History A-Z #1 | 0 | - | 4.45 | 47,113 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,936 |
| History of Scotland | 0 | - | 4.51 | 21,155 |
| Champions League Winners | 0 | - | 4.92 | 1,013,521 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,577 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,342 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,253 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,237 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,622 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,296 |
| European Countries with One Border | 0 | - | 4.97 | 183,531 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,276 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,303 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,973 |
| Countries That Border Russia | 0 | - | 4.98 | 463,972 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,340 |
| History of Austria | 0 | - | 4.70 | 17,955 |
| Austria Country Quiz | 0 | - | 4.57 | 59,979 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,142 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| History of Paris | 0 | - | 4.24 | 13,668 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,566 |
| States of Germany | 0 | - | 4.95 | 154,053 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,552 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,516 |
| Greece Country Quiz | 0 | - | 4.74 | 66,544 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,556 |
| Regions of Italy | 0 | - | 4.92 | 76,738 |
| Italy Country Quiz | 0 | - | 4.77 | 123,898 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,238 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,903 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,645 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,834 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,660 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,659 |
| The Vikings! | 0 | - | 4.46 | 28,394 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,317 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,208 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Country Quiz | 0 | - | 4.44 | 129,075 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,051 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,579 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,392 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,273 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,818 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,439 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,125 |
| Geography of the British Empire | 0 | - | 4.48 | 39,818 |
| The Reign of Queen Victoria | 0 | - | 4.34 | 23,527 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,810 |
| Counties of Wales | 0 | - | 4.63 | 39,522 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,197 |
| Battle to Country | 0 | - | 4.91 | 53,771 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,644 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,051 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,814 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,316 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,490 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,807 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,633 |
| Russia Country Quiz | 0 | - | 4.83 | 115,155 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,636 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,511 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,953 |
| German History A-Z | 0 | - | 4.49 | 24,864 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,924 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,403 |
| History of Ireland | 0 | - | 4.39 | 31,378 |
