| Name the English Monarchs | 0 | - | 4.92 | 498,792 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,754 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,776 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,137 |
| Roman Emperors | 0 | - | 4.95 | 118,684 |
| Monarchies of Europe | 0 | - | 4.90 | 97,475 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,638 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,368 |
| Countries Bordering France | 0 | - | 4.83 | 400,273 |
| Departments of France | 0 | - | 4.93 | 52,999 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,559 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,597 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,877 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,476 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,629 |
| French History Multiple Choice | 0 | - | 4.55 | 32,902 |
| English Royal Consorts | 0 | - | 4.37 | 37,220 |
| French History A-Z | 0 | - | 4.22 | 23,962 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,814 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,801 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,037 |
| Medieval English History | 0 | - | 4.53 | 43,348 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,144 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,604 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,619 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,269 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,170 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,408 |
| Monarchies of Asia | 0 | - | 4.97 | 70,681 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,370 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,248 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,933 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,468 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,401 |
| Germany Country Quiz | 0 | - | 4.82 | 156,800 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,332 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,422 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,622 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,016 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,481 |
| Italy Country Quiz | 0 | - | 4.82 | 122,401 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,569 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,258 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,571 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,730 |
| Roman Names for Places | 0 | - | 4.62 | 57,936 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,206 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,792 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,535 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,634 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,987 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,860 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,439 |
| England or Wales? | 0 | - | 4.94 | 45,393 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,440 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,685 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,207 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,136 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,880 |
| France Country Quiz | 0 | - | 4.70 | 134,005 |
| History of France | 0 | - | 4.59 | 56,293 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,738 |
| Counties of Ireland | 0 | - | 4.92 | 193,440 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,534 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,545 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,850 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,847 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,970 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,142 |
| History of Scotland | 0 | - | 4.51 | 21,019 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,873 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,862 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,691 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,455 |
| Geography of the French Empire | 0 | - | 4.45 | 26,961 |
| The French Revolution | 0 | - | 4.46 | 23,816 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,697 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,549 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,436 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,949 |
| Name that Greek Letter | 0 | - | 4.94 | 321,970 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,979 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,781 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,545 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,567 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,629 |
| Countries in World War I | 0 | - | 4.88 | 226,794 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,667 |
| Countries that Beat France | 0 | - | 4.49 | 75,269 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,158 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,587 |
| British Monopoly Board | 0 | - | 4.52 | 41,069 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,047 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,362 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,592 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,300 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,843 |
| The Only European Country ... | 0 | - | 4.91 | 214,329 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,852 |
| History of Russia Quiz | 0 | - | 4.49 | 31,807 |
| 20 Questions About France | 0 | - | 4.11 | 32,348 |
| Ancient Greek Words | 0 | - | 4.92 | 110,859 |
| History of Italy | 0 | - | 4.55 | 31,856 |
| Italian History A-Z | 0 | - | 4.21 | 17,576 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,506 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,015 |
| Spanish History A-Z | 0 | - | 4.37 | 19,182 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,775 |
| Counties of England | 0 | - | 4.97 | 790,401 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,623 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,639 |
| British History A-Z #1 | 0 | - | 4.45 | 46,173 |
| History of London | 0 | - | 4.33 | 26,111 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,213 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,708 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,900 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,869 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,452 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,732 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,592 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,791 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,244 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,580 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,435 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,332 |
| Slavic Countries | 0 | - | 4.96 | 111,000 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,114 |
| Regions of France | 0 | - | 4.78 | 119,518 |
| France Immigration by Country | 0 | - | 4.72 | 76,042 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,000 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,766 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,019 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,298 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,199 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,691 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,095 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,612 |
| British Geography A-Z | 0 | - | 4.41 | 19,436 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,417 |
| Champions League Winners | 0 | - | 4.92 | 997,928 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,067 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,473 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,239 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,185 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,578 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,476 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,151 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,582 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,094 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,351 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,511 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,954 |
| European Countries with One Border | 0 | - | 4.97 | 181,803 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,709 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,551 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,443 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,454 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,465 |
| Russia Country Quiz | 0 | - | 4.85 | 113,793 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,517 |
| Countries That Border Russia | 0 | - | 4.98 | 459,577 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,950 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,317 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,101 |
| History of Austria | 0 | - | 4.70 | 17,774 |
| Austria Country Quiz | 0 | - | 4.57 | 59,420 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,339 |
| French Inventions | 0 | - | 4.08 | 13,867 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,899 |
| States of Germany | 0 | - | 4.96 | 150,486 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,151 |
| German History A-Z | 0 | - | 4.49 | 24,453 |
| Greece Country Quiz | 0 | - | 4.74 | 65,845 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,311 |
| History of Ireland | 0 | - | 4.39 | 30,897 |
| Regions of Italy | 0 | - | 4.92 | 74,908 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,536 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,293 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,071 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,945 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,828 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,745 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,448 |
| The Portuguese Empire | 0 | - | 4.54 | 12,005 |
| Spain Country Quiz | 0 | - | 4.45 | 127,776 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,594 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,141 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,014 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,469 |
| UK Immigration by Country | 0 | - | 4.94 | 139,864 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,460 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,154 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,309 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,590 |
