| Name the English Monarchs | 0 | - | 4.92 | 499,279 |
| Monarchies of Europe | 0 | - | 4.90 | 97,558 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,538 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,704 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,674 |
| The Trojan War | 0 | - | 4.83 | 39,510 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,948 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,187 |
| Roman Emperors | 0 | - | 4.95 | 118,870 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,859 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,534 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,540 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,296 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,697 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,763 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,356 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,250 |
| Kings of France Quiz | 0 | - | 4.20 | 32,604 |
| Monarchies of Asia | 0 | - | 4.97 | 70,742 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,361 |
| Countries Bordering France | 0 | - | 4.83 | 400,669 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,648 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,655 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,397 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,465 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,347 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,246 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,261 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,716 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,524 |
| Departments of France | 0 | - | 4.93 | 53,101 |
| Germany Country Quiz | 0 | - | 4.82 | 156,937 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,414 |
| Italy Country Quiz | 0 | - | 4.82 | 122,511 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,692 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,334 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,410 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,285 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,891 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,639 |
| England or Wales? | 0 | - | 4.94 | 45,433 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,574 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,018 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,581 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,944 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,642 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,917 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,002 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,049 |
| Counties of Ireland | 0 | - | 4.92 | 193,684 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,578 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,704 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,511 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,006 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,366 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,169 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,957 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,927 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,484 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,680 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,832 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,812 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,572 |
| Name that Greek Letter | 0 | - | 4.94 | 322,179 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,085 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,044 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,594 |
| British Monopoly Board | 0 | - | 4.52 | 41,081 |
| English Royal Consorts | 0 | - | 4.37 | 37,238 |
| Medieval English History | 0 | - | 4.53 | 43,362 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,584 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,894 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,039 |
| The Only European Country ... | 0 | - | 4.91 | 214,670 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,035 |
| History of Russia Quiz | 0 | - | 4.49 | 31,825 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,120 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,504 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,826 |
| History of Italy | 0 | - | 4.55 | 31,870 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,592 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,744 |
| Roman Names for Places | 0 | - | 4.62 | 57,987 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,532 |
| History of The Netherlands | 0 | - | 4.46 | 17,348 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,051 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,665 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,008 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,874 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,089 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,639 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,055 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,977 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,556 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,995 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,651 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,882 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,940 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,553 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,391 |
| Slavic Countries | 0 | - | 4.96 | 111,092 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,600 |
| Ancient Greek Words | 0 | - | 4.93 | 110,959 |
| Italian History A-Z | 0 | - | 4.21 | 17,605 |
| Spanish History A-Z | 0 | - | 4.37 | 19,205 |
| Counties of England | 0 | - | 4.97 | 791,358 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,613 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,594 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,059 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,028 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,906 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,375 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,180 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,970 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,744 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,119 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,494 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,722 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,814 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,787 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,920 |
| Famous Irish People | 0 | - | 4.05 | 45,892 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,595 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,747 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,110 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,879 |
| British Geography A-Z | 0 | - | 4.41 | 19,448 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,157 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,647 |
| British History A-Z #1 | 0 | - | 4.45 | 46,233 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,259 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,446 |
| History of Scotland | 0 | - | 4.51 | 21,031 |
| London A-Z | 0 | - | 4.10 | 40,679 |
| Champions League Winners | 0 | - | 4.92 | 999,122 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,621 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,227 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,715 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,256 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,445 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,077 |
| European Countries with One Border | 0 | - | 4.97 | 181,924 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,825 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,119 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,836 |
| Countries That Border Russia | 0 | - | 4.98 | 459,894 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,380 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| Austria Country Quiz | 0 | - | 4.57 | 59,471 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,398 |
| France Country Quiz | 0 | - | 4.70 | 134,211 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,563 |
| Geography of the French Empire | 0 | - | 4.45 | 26,975 |
| The French Revolution | 0 | - | 4.46 | 23,839 |
| History of France | 0 | - | 4.59 | 56,439 |
| French History A-Z | 0 | - | 4.22 | 24,210 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,022 |
| States of Germany | 0 | - | 4.96 | 150,745 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,411 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,234 |
| Greece Country Quiz | 0 | - | 4.74 | 65,888 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,445 |
| Regions of Italy | 0 | - | 4.92 | 75,007 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,125 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,564 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,316 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,138 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,005 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,908 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,777 |
| The Portuguese Empire | 0 | - | 4.58 | 12,011 |
| Spain Country Quiz | 0 | - | 4.45 | 127,879 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,856 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,060 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,573 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,218 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,601 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,487 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,446 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,244 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,995 |
| Geography of the British Empire | 0 | - | 4.48 | 39,548 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,585 |
| Counties of Wales | 0 | - | 4.63 | 39,020 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,126 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,549 |
| Battle to Country | 0 | - | 4.91 | 52,699 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,158 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,380 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,311 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,611 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,362 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,793 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,032 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,653 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,616 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,304 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,032 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,374 |
