| Name the English Monarchs | 0 | - | 4.92 | 497,922 |
| Monarchies of Europe | 0 | - | 4.90 | 97,321 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,499 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,540 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,050 |
| Roman Emperors | 0 | - | 4.95 | 118,494 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,677 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,336 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,272 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,953 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,428 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,421 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,115 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,021 |
| Kings of France Quiz | 0 | - | 4.20 | 32,556 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Monarchies of Asia | 0 | - | 4.97 | 70,607 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,478 |
| Countries Bordering France | 0 | - | 4.83 | 399,139 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,059 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,296 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,250 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,122 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,550 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,176 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,194 |
| Departments of France | 0 | - | 4.93 | 52,829 |
| Germany Country Quiz | 0 | - | 4.82 | 156,553 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,150 |
| Italy Country Quiz | 0 | - | 4.82 | 122,213 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,386 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,080 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,369 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,951 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,645 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,290 |
| England or Wales? | 0 | - | 4.94 | 45,318 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,259 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,209 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,514 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,780 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,537 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,807 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,340 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,984 |
| Counties of Ireland | 0 | - | 4.92 | 193,081 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,452 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,335 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,342 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,315 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,226 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,624 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,732 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,767 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,399 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,381 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,779 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,953 |
| Name that Greek Letter | 0 | - | 4.94 | 321,676 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,954 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,876 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,468 |
| British Monopoly Board | 0 | - | 4.52 | 41,034 |
| English Royal Consorts | 0 | - | 4.37 | 37,164 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,612 |
| Medieval English History | 0 | - | 4.53 | 43,321 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,005 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,311 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,565 |
| The Only European Country ... | 0 | - | 4.91 | 213,840 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,545 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,904 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,436 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,295 |
| History of Italy | 0 | - | 4.55 | 31,817 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,535 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,670 |
| Roman Names for Places | 0 | - | 4.62 | 57,878 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,982 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,388 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,957 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,836 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,951 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,745 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,827 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,717 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,291 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,343 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,473 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,832 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,897 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,270 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,207 |
| Slavic Countries | 0 | - | 4.96 | 110,860 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,169 |
| Ancient Greek Words | 0 | - | 4.92 | 110,704 |
| Italian History A-Z | 0 | - | 4.21 | 17,386 |
| Spanish History A-Z | 0 | - | 4.37 | 19,034 |
| Counties of England | 0 | - | 4.97 | 789,212 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,938 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,416 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,917 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,866 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,723 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,225 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,906 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,679 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,633 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,029 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,314 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,605 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,747 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,680 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,472 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,558 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,617 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,166 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,123 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,613 |
| British History A-Z #1 | 0 | - | 4.45 | 45,814 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,113 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,430 |
| History of Scotland | 0 | - | 4.51 | 21,003 |
| London A-Z | 0 | - | 4.10 | 40,638 |
| Champions League Winners | 0 | - | 4.92 | 996,381 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,336 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,043 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,398 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,862 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,218 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,815 |
| European Countries with One Border | 0 | - | 4.97 | 181,632 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,525 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,796 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,010 |
| Countries That Border Russia | 0 | - | 4.98 | 458,927 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,206 |
| History of Austria | 0 | - | 4.70 | 17,748 |
| Austria Country Quiz | 0 | - | 4.57 | 59,343 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,236 |
| France Country Quiz | 0 | - | 4.70 | 133,836 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,130 |
| Geography of the French Empire | 0 | - | 4.48 | 26,934 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| History of France | 0 | - | 4.59 | 56,056 |
| French History A-Z | 0 | - | 4.17 | 18,660 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,685 |
| States of Germany | 0 | - | 4.96 | 150,058 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,384 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,017 |
| Greece Country Quiz | 0 | - | 4.74 | 65,759 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,424 |
| Regions of Italy | 0 | - | 4.92 | 74,729 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,117 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,482 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,247 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,962 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,816 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,760 |
| The Vikings! | 0 | - | 4.46 | 28,246 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,700 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Spain Country Quiz | 0 | - | 4.45 | 127,611 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,355 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,938 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,189 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,910 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,567 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,329 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,175 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,781 |
| Geography of the British Empire | 0 | - | 4.48 | 39,473 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,407 |
| Counties of Wales | 0 | - | 4.63 | 38,903 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,003 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,433 |
| Battle to Country | 0 | - | 4.91 | 52,528 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,904 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,099 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,090 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,225 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,672 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,911 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,287 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,500 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,177 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,927 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,300 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,517 |
| European Geography A-Z | 0 | - | 4.28 | 49,005 |
