| Name the English Monarchs | 0 | - | 4.92 | 498,771 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,753 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,767 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,135 |
| Roman Emperors | 0 | - | 4.95 | 118,682 |
| Monarchies of Europe | 0 | - | 4.90 | 97,473 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,637 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,367 |
| Countries Bordering France | 0 | - | 4.83 | 400,258 |
| Departments of France | 0 | - | 4.93 | 52,997 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,557 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,597 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,876 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,474 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,626 |
| French History Multiple Choice | 0 | - | 4.55 | 32,901 |
| English Royal Consorts | 0 | - | 4.37 | 37,219 |
| French History A-Z | 0 | - | 4.22 | 23,951 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,811 |
| 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 | 149,132 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,591 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,616 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,259 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,165 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,398 |
| Monarchies of Asia | 0 | - | 4.97 | 70,678 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,367 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,246 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,921 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,456 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,396 |
| Germany Country Quiz | 0 | - | 4.82 | 156,793 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,328 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,414 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,619 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,014 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,481 |
| Italy Country Quiz | 0 | - | 4.82 | 122,396 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,565 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,251 |
| 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 | 51,729 |
| Roman Names for Places | 0 | - | 4.62 | 57,936 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,201 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,788 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,531 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,634 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,986 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,859 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,439 |
| England or Wales? | 0 | - | 4.94 | 45,391 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,434 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,500 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,205 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,132 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,874 |
| France Country Quiz | 0 | - | 4.70 | 134,000 |
| History of France | 0 | - | 4.59 | 56,286 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,729 |
| Counties of Ireland | 0 | - | 4.92 | 193,425 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,529 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,534 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,845 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,847 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,962 |
| 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 | 109,869 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,861 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,683 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,453 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,815 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,693 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,546 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,436 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,933 |
| Name that Greek Letter | 0 | - | 4.94 | 321,966 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,975 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,778 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,544 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,563 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,619 |
| Countries in World War I | 0 | - | 4.88 | 226,790 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,657 |
| Countries that Beat France | 0 | - | 4.49 | 75,266 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,133 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,584 |
| British Monopoly Board | 0 | - | 4.52 | 41,068 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,045 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,348 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,526 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,271 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,835 |
| The Only European Country ... | 0 | - | 4.91 | 214,320 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,838 |
| History of Russia Quiz | 0 | - | 4.49 | 31,807 |
| 20 Questions About France | 0 | - | 4.11 | 32,348 |
| Ancient Greek Words | 0 | - | 4.92 | 110,857 |
| History of Italy | 0 | - | 4.55 | 31,856 |
| Italian History A-Z | 0 | - | 4.21 | 17,575 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,505 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| Spanish History A-Z | 0 | - | 4.37 | 19,182 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,773 |
| Counties of England | 0 | - | 4.97 | 790,370 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,620 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,637 |
| British History A-Z #1 | 0 | - | 4.45 | 46,171 |
| History of London | 0 | - | 4.33 | 26,111 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,212 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,708 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,856 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,863 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,448 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,720 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,587 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,788 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,238 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,569 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,431 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,331 |
| Slavic Countries | 0 | - | 4.96 | 110,997 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,112 |
| Regions of France | 0 | - | 4.78 | 119,513 |
| France Immigration by Country | 0 | - | 4.72 | 76,040 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,999 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,760 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,019 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,297 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,176 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,688 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,095 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,601 |
| British Geography A-Z | 0 | - | 4.41 | 19,436 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,416 |
| Champions League Winners | 0 | - | 4.92 | 997,873 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,065 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,468 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,235 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,181 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,577 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,474 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,151 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,575 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,089 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,350 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,506 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,949 |
| European Countries with One Border | 0 | - | 4.97 | 181,799 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,699 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,532 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,437 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,433 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,459 |
| Russia Country Quiz | 0 | - | 4.85 | 113,788 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,511 |
| Countries That Border Russia | 0 | - | 4.98 | 459,564 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,947 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,313 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,099 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Austria Country Quiz | 0 | - | 4.57 | 59,420 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,336 |
| French Inventions | 0 | - | 4.08 | 13,867 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,897 |
| States of Germany | 0 | - | 4.96 | 150,481 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,149 |
| German History A-Z | 0 | - | 4.49 | 24,452 |
| Greece Country Quiz | 0 | - | 4.74 | 65,844 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,301 |
| History of Ireland | 0 | - | 4.39 | 30,895 |
| Regions of Italy | 0 | - | 4.92 | 74,904 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,536 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,291 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,070 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,944 |
| 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 | 71,446 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| Spain Country Quiz | 0 | - | 4.45 | 127,769 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,591 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,136 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,012 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,466 |
| UK Immigration by Country | 0 | - | 4.94 | 139,857 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,455 |
| 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 | 38,588 |
